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Mr. Mohammad Khairul Basher
Bangladesh Atomic Energy Commission, Bangladesh

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0 BIPV
1 Renewable Energy
0 Smart Grid
0 nZEB
1 Photovoltaic Engineering

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Journal article
Published: 22 July 2021 in Applied Sciences
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Metallic thin-film materials and nanoparticles (mainly silver (Ag)-based) are recently being used in many nano-technological applications, including sensors, reflective heat-mirror coatings, and antibacterial coatings. The physical vapor deposition technique has attracted significant attention for Ag-based nanocomposites with tailoring of the structural and optical properties of metallic thin films, thus allowing for further improvements and application possibilities in various existing fields, namely electronics, catalysis, magnetics, and optics, alongside the environment and health and new emergent fields, particularly thin-film coatings. This study highlights the preparation, characterization, properties, and possible future application directions of several types of silver (Ag)-based nanocomposite thin films prepared by using physical vapor deposition techniques. The high-temperature (above 300 °C) heat-treated composite layer shows significant spectral shifts; however, distinguishingly notable sizes of nanoparticles are not observed, which indicates that this newly developed composite material can be useful for various coating applications.

ACS Style

Mohammad Nur-E-Alam; Mohammad Basher; Mikhail Vasiliev; Narottam Das. Physical Vapor-Deposited Silver (Ag)-Based Metal-Dielectric Nanocomposites for Thin-Film and Coating Applications. Applied Sciences 2021, 11, 6746 .

AMA Style

Mohammad Nur-E-Alam, Mohammad Basher, Mikhail Vasiliev, Narottam Das. Physical Vapor-Deposited Silver (Ag)-Based Metal-Dielectric Nanocomposites for Thin-Film and Coating Applications. Applied Sciences. 2021; 11 (15):6746.

Chicago/Turabian Style

Mohammad Nur-E-Alam; Mohammad Basher; Mikhail Vasiliev; Narottam Das. 2021. "Physical Vapor-Deposited Silver (Ag)-Based Metal-Dielectric Nanocomposites for Thin-Film and Coating Applications." Applied Sciences 11, no. 15: 6746.

Preprint
Published: 20 May 2021
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This research project focuses on the optimization of the hybrid energy system together with the assistance of thin-film coatings aiming to achieve self-sustainable food and crop storage facilities which will run effectively with its own generated energy. An infrastructure will be designed and constructed that will comprise a hybrid power generation system accompanied by thin-film coated semitransparent and non-transparent construction materials for energy saving. Thin-film low emissivity (Low-E) type coatings will assist the transparent or semitransparent construction materials to reflect most of the infrared (IR-mostly heat) and UV spectra of sunlight without interrupting the visible spectrum and will lead to saving energy consumption by reducing the heat and lighting during day time

ACS Style

Mohammad Nur-E Alam; Soyed Mohiuddin Ahmed; Mohammad Nasirul Hoque; Mohammad Khairul Basher; Narottam Das. Combinational Approach of Energy Management for Sustainable Food and Crop Storage Facilities: A Research Concept. 2021, 1 .

AMA Style

Mohammad Nur-E Alam, Soyed Mohiuddin Ahmed, Mohammad Nasirul Hoque, Mohammad Khairul Basher, Narottam Das. Combinational Approach of Energy Management for Sustainable Food and Crop Storage Facilities: A Research Concept. . 2021; ():1.

Chicago/Turabian Style

Mohammad Nur-E Alam; Soyed Mohiuddin Ahmed; Mohammad Nasirul Hoque; Mohammad Khairul Basher; Narottam Das. 2021. "Combinational Approach of Energy Management for Sustainable Food and Crop Storage Facilities: A Research Concept." , no. : 1.

Journal article
Published: 17 October 2020 in Sustainability
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This paper reports on the optimization of thin-film coating-assisted, self-sustainable, off-grid hybrid power generation systems for cattle farming in rural areas of Bangladesh. Bangladesh is a lower middle-income country with declining rates of poverty among its 160 million people due to persistent economic growth in conjunction with balanced agricultural improvements. Most of the rural households adopt a mixed farming system by cultivating crops and simultaneously rearing livestock. Among the animals raised, cattle are considered as the most valuable asset for the small-/medium-scale farmers in terms of their meat and milk production. Currently, along with the major health issue, the COVID-19 pandemic is hindering the world’s economic growth and has thrust millions into unemployment; Bangladesh is also in this loop. However, natural disasters such as COVID-19 pandemic and floods, largely constrain rural smallholder cattle farmers from climbing out of their poverty. In particular, small- and medium-scale cattle farmers face many issues that obstruct them from taking advantage of market opportunities and imposing a greater burden on their families and incomes. An appropriate measure can give a way to make those cattle farmers’ businesses both profitable and sustainable. Optimization of thin-film coating-assisted, self-sustainable, off-grid hybrid power generation system for cattle farming is a new and forward-looking approach for sustainable development of the livestock sector. In this study, we design and optimize a thin-film coating-assisted hybrid (photovoltaic battery generator) power system by using the Hybrid Optimization of Multiple Energy Resources (HOMER, Version 3.14.0) simulation tool. An analysis of the results has suggested that the off-grid hybrid system is more feasible for small- and medium-scale cattle farming systems with long-term sustainability to overcome the significant challenges faced by smallholder cattle farmers in Bangladesh.

ACS Style

Mohammad Nur-E-Alam; Mohammad Hoque; Soyed Ahmed; Mohammad Basher; Narottam Das. Energy Engineering Approach for Rural Areas Cattle Farmers in Bangladesh to Reduce COVID-19 Impact on Food Safety. Sustainability 2020, 12, 8609 .

AMA Style

Mohammad Nur-E-Alam, Mohammad Hoque, Soyed Ahmed, Mohammad Basher, Narottam Das. Energy Engineering Approach for Rural Areas Cattle Farmers in Bangladesh to Reduce COVID-19 Impact on Food Safety. Sustainability. 2020; 12 (20):8609.

Chicago/Turabian Style

Mohammad Nur-E-Alam; Mohammad Hoque; Soyed Ahmed; Mohammad Basher; Narottam Das. 2020. "Energy Engineering Approach for Rural Areas Cattle Farmers in Bangladesh to Reduce COVID-19 Impact on Food Safety." Sustainability 12, no. 20: 8609.

Preprint
Published: 21 September 2020
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This paper reports on the optimization of thin-film coating assisted self-sustainable off-grid hybrid power generation systems for cattle farming in rural areas of Bangladesh. Bangladesh is a lower middle-income country with declining rates of poverty among its 160 million people due to persistent economic growth in conjunction with balanced agricultural improvements. Most of the rural households adopt a mixed farming system by cultivating crops and simultaneously rearing livestock. Among the animals raised, cattle are considered as the most valuable asset for the small/medium-scale farmers in terms of their meat and milk production. Currently, along with the major health issue, the COVID-19 pandemic is hindering the world’s economic growth and has thrust millions into unemployment; Bangladesh is also in this loop. However, natural disasters such as COVID-19 pandemic and floods, largely constrain rural smallholder cattle farmers from climbing out of their poverty. In particular, small and medium-scale cattle farmers face many issues that obstruct them from taking advantage of market opportunities and imposing a greater burden on their families and incomes. An appropriate measure can give a way to make those cattle farmers’ businesses both profitable and sustainable. Optimization of thin-film coating assisted self-sustainable off-grid hybrid power generation system for cattle farming is a new and forward-looking approach for sustainable development of the livestock sector. In this study, we design and optimize a thin-film coating assisted hybrid (photovoltaic-battery-generator) power system by using the Hybrid Optimization of Multiple Energy Resources (HOMER, Version 3.14.0) simulation tool. An analysis of the results has suggested that the off-grid hybrid system is more feasible for small and medium-scale cattle farming systems with long-term sustainability to overcome the significant challenges faced by smallholder cattle farmers in Bangladesh.

ACS Style

Mohammad Nur-E-Alam; Mohammad Nasirul Hoque; Soyed Mohiuddin Ahmed; Mohammad Khairul Basher; And Narottam Das. Energy Engineering Approach for Rural Areas Cattle Farmers in Bangladesh to Reduce COVID-19 Impact on Food-Safety. 2020, 1 .

AMA Style

Mohammad Nur-E-Alam, Mohammad Nasirul Hoque, Soyed Mohiuddin Ahmed, Mohammad Khairul Basher, And Narottam Das. Energy Engineering Approach for Rural Areas Cattle Farmers in Bangladesh to Reduce COVID-19 Impact on Food-Safety. . 2020; ():1.

Chicago/Turabian Style

Mohammad Nur-E-Alam; Mohammad Nasirul Hoque; Soyed Mohiuddin Ahmed; Mohammad Khairul Basher; And Narottam Das. 2020. "Energy Engineering Approach for Rural Areas Cattle Farmers in Bangladesh to Reduce COVID-19 Impact on Food-Safety." , no. : 1.

Journal article
Published: 24 July 2019 in AIP Advances
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Monocrystalline silicon solar cells with photo-absorbing morphology can amplify light-trapping properties within the absorber layer and help to fabricate cost-effective solar cells. In this paper, the effect of different parameters namely temperature and time of Cu-assisted chemical etching was thoroughly investigated for the optimization of the light absorption properties. P-type monocrystalline wafers were selectively treated with Cu(NO3)2.3H2O:HF:H2O2:DI water solution at 50 °C for five different time duration. The entire process was repeated at five different temperatures for 20min as well to study the relation between etching temperature and surface reflectance. Sonication bathing was used for the removal of the deposited Cu atoms from the surface with the variation of time and the effect was examined using energy dispersive spectroscopy (EDS). Field emission scanning electron microscopy (FESEM) and UV/VIS spectroscopy were conducted to study the surface morphology and light absorbance respectively. Inverted shapes almost similar to inverted pyramids or porous surface were found randomly on the surface of the wafer. The effect of temperature was found more significant compared to the effect of time variation. An optimum light reflectance was found at 50 °C for 20 min of texturization. Atomic force microscopy (AFM) of the textured sample revealed the average depth of pyramidal shape was about 1.58 μm. EDS results showed a proportional relation between time and Cu removal process, and a complete Cu atoms free textured surface after 25 min of sonication bathing. Therefore, a suitable Cu-assisted texturization technique was found, which could enable lowering the photo-reflectance below 1% without any antireflection coating.

ACS Style

M. Khairul Basher; R. Mishan; S. Biswas; M. Khalid Hossain; M. A. R. Akand; M. A. Matin. Study and analysis the Cu nanoparticle assisted texturization forming low reflective silicon surface for solar cell application. AIP Advances 2019, 9, 075118 .

AMA Style

M. Khairul Basher, R. Mishan, S. Biswas, M. Khalid Hossain, M. A. R. Akand, M. A. Matin. Study and analysis the Cu nanoparticle assisted texturization forming low reflective silicon surface for solar cell application. AIP Advances. 2019; 9 (7):075118.

Chicago/Turabian Style

M. Khairul Basher; R. Mishan; S. Biswas; M. Khalid Hossain; M. A. R. Akand; M. A. Matin. 2019. "Study and analysis the Cu nanoparticle assisted texturization forming low reflective silicon surface for solar cell application." AIP Advances 9, no. 7: 075118.

Journal article
Published: 10 May 2019 in Materials Research Express
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ACS Style

M. Khairul Basher; Jalal Uddin; M Khalid Hossain; M A R Akand; S Biswas; M N H Mia; K M Shorowordi. Effect of doping profile on sheet resistance and contact resistance of monocrystalline silicon solar cells. Materials Research Express 2019, 6, 085510 .

AMA Style

M. Khairul Basher, Jalal Uddin, M Khalid Hossain, M A R Akand, S Biswas, M N H Mia, K M Shorowordi. Effect of doping profile on sheet resistance and contact resistance of monocrystalline silicon solar cells. Materials Research Express. 2019; 6 (8):085510.

Chicago/Turabian Style

M. Khairul Basher; Jalal Uddin; M Khalid Hossain; M A R Akand; S Biswas; M N H Mia; K M Shorowordi. 2019. "Effect of doping profile on sheet resistance and contact resistance of monocrystalline silicon solar cells." Materials Research Express 6, no. 8: 085510.

Journal article
Published: 22 February 2019 in Materials Research Express
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ACS Style

S Biswas; M. Khairul Basher; M Khalid Hossain; M A R Akand; M. T. Rahman; M R Ahmed; M A Matin; S Huque. Study and analysis of the morphological, elemental and electrical properties of phosphorus doped monocrystalline silicon solar cell. Materials Research Express 2019, 6, 055515 .

AMA Style

S Biswas, M. Khairul Basher, M Khalid Hossain, M A R Akand, M. T. Rahman, M R Ahmed, M A Matin, S Huque. Study and analysis of the morphological, elemental and electrical properties of phosphorus doped monocrystalline silicon solar cell. Materials Research Express. 2019; 6 (5):055515.

Chicago/Turabian Style

S Biswas; M. Khairul Basher; M Khalid Hossain; M A R Akand; M. T. Rahman; M R Ahmed; M A Matin; S Huque. 2019. "Study and analysis of the morphological, elemental and electrical properties of phosphorus doped monocrystalline silicon solar cell." Materials Research Express 6, no. 5: 055515.

Journal article
Published: 12 October 2018 in Results in Physics
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In dye-sensitized solar cell (DSSC) properties of nanocrystalline oxide layer of photoanode may changes when exposed to ionization radiation environment which may leads to change the cell performance. In this study, 10 µm thick TiO2 (Degussa-P25) was deposited as a photoanode film on microscopic glass slide with the doctor-blade coating. The deposited film was subjected to different gamma (γ) radiation doses (0–20 kGy) to study the effect of ionizing radiation on morphological, structural, optical and compositional characteristics of the film. At 10 kGy dose, dislocation density (DD), strain, crystallites per unit surface area (CPSA), specific surface area (SSA) of anatase phase (1 0 1) of the film were decreased abruptly, conversely, crystal size and morphology index (MI) were increased at the same radiation dose slowly. UV-Vis-NIR spectroscopy results showed that in irradiated photoanode film the light transmittance and absorption depth were decreased, whereas, absorption and absorption coefficient were increased beyond the visible wavelength. The optical band gap of the irradiated film was increased by 12.5% when the gamma radiation dose increased from 0 kGy to 20 kGy. Thus, the irradiation induced changes in physio-chemical properties of nanocrystalline photoanode film may affect the DSSC cell performance.

ACS Style

M. Khalid Hossain; M. T. Rahman; M. Khairul Basher; Muhammad Javaid Afzal; M.S. Bashar. Impact of ionizing radiation doses on nanocrystalline TiO2 layer in DSSC’s photoanode film. Results in Physics 2018, 11, 1172 -1181.

AMA Style

M. Khalid Hossain, M. T. Rahman, M. Khairul Basher, Muhammad Javaid Afzal, M.S. Bashar. Impact of ionizing radiation doses on nanocrystalline TiO2 layer in DSSC’s photoanode film. Results in Physics. 2018; 11 ():1172-1181.

Chicago/Turabian Style

M. Khalid Hossain; M. T. Rahman; M. Khairul Basher; Muhammad Javaid Afzal; M.S. Bashar. 2018. "Impact of ionizing radiation doses on nanocrystalline TiO2 layer in DSSC’s photoanode film." Results in Physics 11, no. : 1172-1181.

Journal article
Published: 04 October 2018 in Optik
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Properties of photoanodic nanocrystalline oxide film may vary with thickness and gamma irradiation. In this work, photoanodic nanocrystalline TiO2 films of 5, 10, 15, 20, and 25 μm thickness were fabricated on glass substrate as well as irradiated with 10 kGy gamma irradiation dose. Effect of film thickness on morphological, compositional, structural and optical properties of the irradiate film were investigated using scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffractometer (XRD) and UV–vis spectrophotometer. The XRD result showed significant change in mole fraction, phase content, crystal size, strain, specific surface area, morphology index, crystallites per unit surface area, and dislocation density of both anatase and rutile phase due to variation of irradiated film thickness. UV–vis-NIR spectroscopy results revealed that the optical bandgap increased with the increase of film thickness and found 2.80, 2.85, 3.15, 3.20, and 3.40 eV for 5, 10, 15, 20, and 25 μm film. These studies will be beneficial to more deeply understand the effect of both gamma radiation and variation in film thickness on several properties of photoanodic layer.

ACS Style

M. Khalid Hossain; M. T. Rahman; M.K. Basher; M.S. Manir; M.S. Bashar. Influence of thickness variation of gamma-irradiated DSSC photoanodic TiO2 film on structural, morphological and optical properties. Optik 2018, 178, 449 -460.

AMA Style

M. Khalid Hossain, M. T. Rahman, M.K. Basher, M.S. Manir, M.S. Bashar. Influence of thickness variation of gamma-irradiated DSSC photoanodic TiO2 film on structural, morphological and optical properties. Optik. 2018; 178 ():449-460.

Chicago/Turabian Style

M. Khalid Hossain; M. T. Rahman; M.K. Basher; M.S. Manir; M.S. Bashar. 2018. "Influence of thickness variation of gamma-irradiated DSSC photoanodic TiO2 film on structural, morphological and optical properties." Optik 178, no. : 449-460.

Conference paper
Published: 01 October 2018 in 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET)
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A solar cell is basically a p-n junction that generates current upon the incidence of solar radiation. The property of a solar cell is strongly influenced by the electrical properties of the junction and the optical property of the n-type surface, which is fabricated by a process called diffusion. In this paper, we report the chemical processing and fabrication of a pn junction on a large area P-type silicon wafer at three different temperatures 850 ° C, 875 ° C, and 900 ° C using POCl 3 as a precursor gas. After each step of processing, the wafers were subjected to optical, electrical, and morphological characterization. It has been found that the reflectance as well as the morphology of the wafers not only changes with chemical processing but also with doping temperature as well. Moreover, Hall-effect measurement for carrier type and concentration as well as I-V characterization of the doped wafers confirms the formation of a p-n junction.

ACS Style

Khorshed Alam; Tanisha Mehreen; Mohammad Khairul Basher; Mohammod Abu Sayid Haque; Subir C. Ghosh; Khandker S. Hossain. Fabrication And Characterization Of A P-N Junction For Large Area Silicon Solar Cell. 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET) 2018, 147 -150.

AMA Style

Khorshed Alam, Tanisha Mehreen, Mohammad Khairul Basher, Mohammod Abu Sayid Haque, Subir C. Ghosh, Khandker S. Hossain. Fabrication And Characterization Of A P-N Junction For Large Area Silicon Solar Cell. 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET). 2018; ():147-150.

Chicago/Turabian Style

Khorshed Alam; Tanisha Mehreen; Mohammad Khairul Basher; Mohammod Abu Sayid Haque; Subir C. Ghosh; Khandker S. Hossain. 2018. "Fabrication And Characterization Of A P-N Junction For Large Area Silicon Solar Cell." 2018 International Conference on Innovations in Science, Engineering and Technology (ICISET) , no. : 147-150.

Journal article
Published: 15 September 2018 in Optik
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This paper presents the effect of surface texturization on the minority carrier lifetime and photoelectric conversion parameters of monocrystalline silicon solar cell. Two different wet-chemical texturization methods were employed to etch the monocrystalline silicon wafer surface. Morphology of the wafers was investigated by stylus surface profiler, field emission scanning electron microscope (FESEM) and surface reflection measurement (SRM) systems. Due to texturization pyramidal structures were formed on wafer surface as well as the surface roughness was increased by 3.07%. Untextured (S1) and textured (S2 & S3) samples were doped with phosphorus atoms with a constant flow rate of liquid phosphorus oxychloride (POCl3) in a high temperature diffusion furnace. Solar cell was fabricated using both untextured and textured silicon wafer. Maximum 1.66% decrease of optical reflectance was found in textured solar cell. The minority carrier lifetime and photoelectric parameters were investigated using surface photovoltage (SPV) and light-current-voltage (LIV) measurement system respectively. Minority carrier diffusion length and minority carrier lifetime were increased significantly in textured solar cell. Thus, surface texturization plays an important role on increasing the energy conversion efficiency of silicon solar cell.

ACS Style

M.K. Basher; M. Khalid Hossain; M.A.R. Akand. Effect of surface texturization on minority carrier lifetime and photovoltaic performance of monocrystalline silicon solar cell. Optik 2018, 176, 93 -101.

AMA Style

M.K. Basher, M. Khalid Hossain, M.A.R. Akand. Effect of surface texturization on minority carrier lifetime and photovoltaic performance of monocrystalline silicon solar cell. Optik. 2018; 176 ():93-101.

Chicago/Turabian Style

M.K. Basher; M. Khalid Hossain; M.A.R. Akand. 2018. "Effect of surface texturization on minority carrier lifetime and photovoltaic performance of monocrystalline silicon solar cell." Optik 176, no. : 93-101.

Journal article
Published: 01 September 2018 in Results in Physics
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In this paper, contact resistance of monocrystalline silicon solar cells was optimized by the variation of phosphorus doping time on emitter region. Wet-chemical texturization was performed to form pyramidal structure on silicon wafer surface. The surface morphology of the textured wafers was studied by field emission scanning electron microscope (FESEM) and surface reflection measurement (SRM). The textured wafers were doped by varying phosphorus doping time using constant flow rate of phosphorus oxychloride (POCl3) in a high-temperature diffusion furnace. The phosphorus doped silicon wafers were metalized by screen printer using silver and aluminum paste in the front and back surface of the wafers respectively. To form ohmic contacts between silver/aluminum layer and the silicon wafer, rapid thermal annealing (RTA) was performed on the screen-printed solar cells. The contact resistance of screen-printed solar cells was measured using transmission line method (TLM). 25-minute doped sample showed minimum front and back contact resistances, which could potentially be useful for efficient monocrystalline silicon solar cells fabrication.

ACS Style

M.K. Basher; M. Khalid Hossain; R. Afaz; S. Tayyaba; M.A.R. Akand; M.T. Rahman; N.M. Eman. Study and investigation of phosphorus doping time on emitter region for contact resistance optimization of monocrystalline silicon solar cell. Results in Physics 2018, 10, 205 -211.

AMA Style

M.K. Basher, M. Khalid Hossain, R. Afaz, S. Tayyaba, M.A.R. Akand, M.T. Rahman, N.M. Eman. Study and investigation of phosphorus doping time on emitter region for contact resistance optimization of monocrystalline silicon solar cell. Results in Physics. 2018; 10 ():205-211.

Chicago/Turabian Style

M.K. Basher; M. Khalid Hossain; R. Afaz; S. Tayyaba; M.A.R. Akand; M.T. Rahman; N.M. Eman. 2018. "Study and investigation of phosphorus doping time on emitter region for contact resistance optimization of monocrystalline silicon solar cell." Results in Physics 10, no. : 205-211.

Journal article
Published: 26 July 2018 in Optik
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In this study, monocrystalline p-type Czochralski silicon wafers having dimension 127 × 127 mm2, thickness 200 μm, and plane (100) were textured to optimize the surface reflection for the fabrication of efficient solar cell. Properly cleaned silicon wafers were textured with the systematic variation of the etching time and chemical concentration (KOH and IPA) at 70 °C temperature. According to field emission scanning electron microscope (FESEM) images and surface reflection measurement (SRM) data, the wafer textured with 10 min etching time and the wafer textured with 1 g of KOH concentration, both showed the similar minimum optical reflectance of 15.08%. This lower reflectance was due to the formation of uniform pyramidal structure on the wafer surface. Moreover, the wafer surface textured with 7 ml isopropyl alcohol (IPA) showed the lowest surface reflectance of 13.59% because of the formation of more uniform pyramidal structure. The most effective pyramidal structure for fabricating efficient solar cell was found for 10 min etching with optimum chemical recipe of KOH: IPA: H2O = 1 g: 7 ml: 125 ml.

ACS Style

M. Khairul Basher; M. Khalid Hossain; Jalal Uddin; M.A.R. Akand; K.M. Shorowordi. Effect of pyramidal texturization on the optical surface reflectance of monocrystalline photovoltaic silicon wafers. Optik 2018, 172, 801 -811.

AMA Style

M. Khairul Basher, M. Khalid Hossain, Jalal Uddin, M.A.R. Akand, K.M. Shorowordi. Effect of pyramidal texturization on the optical surface reflectance of monocrystalline photovoltaic silicon wafers. Optik. 2018; 172 ():801-811.

Chicago/Turabian Style

M. Khairul Basher; M. Khalid Hossain; Jalal Uddin; M.A.R. Akand; K.M. Shorowordi. 2018. "Effect of pyramidal texturization on the optical surface reflectance of monocrystalline photovoltaic silicon wafers." Optik 172, no. : 801-811.

Review
Published: 25 June 2018 in Journal of Advanced Research
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Nonspecific distribution and uncontrollable release of drugs in conventional drug delivery systems (CDDSs) have led to the development of smart nanocarrier-based drug delivery systems, which are also known as Smart Drug Delivery Systems (SDDSs). SDDSs can deliver drugs to the target sites with reduced dosage frequency and in a spatially controlled manner to mitigate the side effects experienced in CDDSs. Chemotherapy is widely used to treat cancer, which is the second leading cause of death worldwide. Site-specific drug delivery led to a keen interest in the SDDSs as an alternative to chemotherapy. Smart nanocarriers, nanoparticles used to carry drugs, are at the focus of SDDSs. A smart drug delivery system consists of smart nanocarriers, targeting mechanisms, and stimulus techniques. This review highlights the recent development of SDDSs for a number of smart nanocarriers, including liposomes, micelles, dendrimers, meso-porous silica nanoparticles, gold nanoparticles, super paramagnetic iron-oxide nanoparticles, carbon nanotubes, and quantum dots. The nanocarriers are described in terms of their structures, classification, synthesis and degree of smartness. Even though SDDSs feature a number of advantages over chemotherapy, there are major concerns about the toxicity of smart nanocarriers; therefore, a substantial study on the toxicity and biocompatibility of the nanocarriers has been reported. Finally, the challenges and future research scope in the field of SDDSs are also presented. It is expected that this review will be widely useful for those who have been seeking new research directions in this field and for those who are about to start their studies in smart nanocarrier-based drug delivery.

ACS Style

S. Hossen; M. Khalid Hossain; M. Khairul Basher; M.N.H. Mia; M. T. Rahman; Jalal Uddin. Smart nanocarrier-based drug delivery systems for cancer therapy and toxicity studies: A review. Journal of Advanced Research 2018, 15, 1 -18.

AMA Style

S. Hossen, M. Khalid Hossain, M. Khairul Basher, M.N.H. Mia, M. T. Rahman, Jalal Uddin. Smart nanocarrier-based drug delivery systems for cancer therapy and toxicity studies: A review. Journal of Advanced Research. 2018; 15 ():1-18.

Chicago/Turabian Style

S. Hossen; M. Khalid Hossain; M. Khairul Basher; M.N.H. Mia; M. T. Rahman; Jalal Uddin. 2018. "Smart nanocarrier-based drug delivery systems for cancer therapy and toxicity studies: A review." Journal of Advanced Research 15, no. : 1-18.

Journal article
Published: 09 May 2018 in Optik
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In this paper, two different nanomaterials of pure anatase and Degussa-P25 TiO2 based dye sensitized solar cells (DSSCs) photoanode were fabricated and characterized to investigate the influence of the nanomaterials and the natural dye on various optical and structural parameters of the photoanodes. Adsorption of dye showed remarkable changes on the various structural parameters including crystallite size, strain, morphology index (MI), specific surface area (SSA), dislocation density, and crystallites per unit surface area (CPSA) for both the Degussa-P25 and pure anatase TiO2 samples analysed by X-ray diffraction (XRD). In UV–vis-NIR spectroscopic optical studies for the dye-adsorbed samples, the overall light absorption was found to decrease for both the anatase and Degussa-P25 from UV to NIR. On the other hand, the dye-free samples were found to exhibit a lower light absorption from UV to green and beyond that level, absorption showed higher value than the dye adsorbed samples. Among the dye-free and dye-adsorbed samples, absorption depth was observed to increase more with the increasingly incident light wavelength for all the dye-adsorbed than the dye-free samples. Optical band gaps were found to decrease from 3.1 eV to 2.95 eV and 3 eV to 2.83 eV for dye-free and dye-adsorbed samples of Degussa-P25 and pure anatase, respectively.

ACS Style

M. Khalid Hossain; A.A. Mortuza; Sapan Kumar Sen; M. Khairul Basher; Muhammad Waseem Ashraf; S. Tayyaba; M.N.H. Mia; Jalal Uddin. A comparative study on the influence of pure anatase and Degussa-P25 TiO2 nanomaterials on the structural and optical properties of dye sensitized solar cell (DSSC) photoanode. Optik 2018, 171, 507 -516.

AMA Style

M. Khalid Hossain, A.A. Mortuza, Sapan Kumar Sen, M. Khairul Basher, Muhammad Waseem Ashraf, S. Tayyaba, M.N.H. Mia, Jalal Uddin. A comparative study on the influence of pure anatase and Degussa-P25 TiO2 nanomaterials on the structural and optical properties of dye sensitized solar cell (DSSC) photoanode. Optik. 2018; 171 ():507-516.

Chicago/Turabian Style

M. Khalid Hossain; A.A. Mortuza; Sapan Kumar Sen; M. Khairul Basher; Muhammad Waseem Ashraf; S. Tayyaba; M.N.H. Mia; Jalal Uddin. 2018. "A comparative study on the influence of pure anatase and Degussa-P25 TiO2 nanomaterials on the structural and optical properties of dye sensitized solar cell (DSSC) photoanode." Optik 171, no. : 507-516.

Article
Published: 08 May 2018 in Applied Physics A
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Implementing texturization process on the monocrystalline silicon substrate reduces reflection and enhances light absorption of the substrate. Thus texturization is one of the key elements to increase the efficiency of solar cell. Considering as-cut monocrystalline silicon wafer as base substrate, in this work different concentrations of Na2CO3 and NaHCO3 solution, KOH–IPA (isopropyl alcohol) solution and tetramethylammonium hydroxide solution with different time intervals have been investigated for texturization process. Furthermore, saw damage removal process was conducted with 10% NaOH solution, 20 wt% KOH–13.33 wt% IPA solution and HF/nitric/acetic acid solution. The surface morphology of saw damage, saw damage removed surface and textured wafer were observed using optical microscope and field emission scanning electron microscopy. Texturization causes pyramidal micro structures on the surface of (100) oriented monocrystalline silicon wafer. The height of the pyramid on the silicon surface varies from 1.5 to 3.2 µm and the inclined planes of the pyramids are acute angle. Contact angle value indicates that the textured wafer’s surface fall in between near-hydrophobic to hydrophobic range. With respect to base material absolute reflectance 1.049–0.75% within 250–800 nm wavelength region, 0.1–0.026% has been achieved within the same wavelength region when textured with 0.76 wt% KOH–4 wt% IPA solution for 20 min. Furthermore, an alternative route of using 1 wt% Na2CO3–0.2 wt% NaHCO3 solution for 50 min has been exploited in the texturization process.

ACS Style

Galib Hashmi; Muhammad Hasanuzzaman; Mohammad Khairul Basher; Mahbubul Hoq; Habibur Rahman. Texturization of as-cut p-type monocrystalline silicon wafer using different wet chemical solutions. Applied Physics A 2018, 124, 415 .

AMA Style

Galib Hashmi, Muhammad Hasanuzzaman, Mohammad Khairul Basher, Mahbubul Hoq, Habibur Rahman. Texturization of as-cut p-type monocrystalline silicon wafer using different wet chemical solutions. Applied Physics A. 2018; 124 (6):415.

Chicago/Turabian Style

Galib Hashmi; Muhammad Hasanuzzaman; Mohammad Khairul Basher; Mahbubul Hoq; Habibur Rahman. 2018. "Texturization of as-cut p-type monocrystalline silicon wafer using different wet chemical solutions." Applied Physics A 124, no. 6: 415.

Journal article
Published: 20 October 2017 in Materials Science-Poland
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Zinc oxide thin films with different thicknesses were prepared on microscopic glass slides by sol-gel spin coating method, then hydrothermal process was applied to produce zinc oxide nanorod arrays. The nanorod thin films were characterized by various spectroscopic methods of analysis. From the images of field emission scanning electron microscope (FESEM), it was observed that for the film thickness up to 200 nm the formed nanorods with wurtzite hexagonal structure were uniformly distributed over the entire surface substrate. From X-ray diffraction analysis it was revealed that the thin films had good polycrystalline nature with highly preferred c-axis orientation along (0 0 2) plane. The optical characterization done by UV-Vis spectrometer showed that all the films had high transparency of 83 % to 96 % in the visible region and sharp cut off at ultraviolet region of electromagnetic spectrum. The band gap of the films decreased as their thickness increased. Energy dispersive X-ray spectroscopy (EDS) showed the presence of zinc and oxygen elements in the films and Fourier transform infrared spectroscopy (FT-IR) revealed the chemical composition of ZnO in the film.

ACS Style

Nasrul Haque Mia; Sardar Masud Rana; Firoz Pervez; Mohammad Reefaz Rahman; Khalid Hossain; Abdul Al Mortuza; Mohammad Khairul Basher; Mahbubul Hoq. Preparation and spectroscopic analysis of zinc oxide nanorod thin films of different thicknesses. Materials Science-Poland 2017, 35, 501 -510.

AMA Style

Nasrul Haque Mia, Sardar Masud Rana, Firoz Pervez, Mohammad Reefaz Rahman, Khalid Hossain, Abdul Al Mortuza, Mohammad Khairul Basher, Mahbubul Hoq. Preparation and spectroscopic analysis of zinc oxide nanorod thin films of different thicknesses. Materials Science-Poland. 2017; 35 (3):501-510.

Chicago/Turabian Style

Nasrul Haque Mia; Sardar Masud Rana; Firoz Pervez; Mohammad Reefaz Rahman; Khalid Hossain; Abdul Al Mortuza; Mohammad Khairul Basher; Mahbubul Hoq. 2017. "Preparation and spectroscopic analysis of zinc oxide nanorod thin films of different thicknesses." Materials Science-Poland 35, no. 3: 501-510.

Journal article
Published: 01 January 2014 in World Journal of Nuclear Science and Technology
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The COOLOD-N2 and PARET computer codes were used for a steady-state thermal hydraulic and safety analysis of the 3 MW TRIGA Mark-II research reactor located at Atomic Energy Research Establishment (AERE), Savar, Dhaka, Bangladesh. The objective of the present study is to ensure that all important safety related thermal hydraulic parameters uphold margins far below the safety limits by steady-state calculations at full power. We, therefore, have calculated the hot channel fuel centreline temperature, fuel surface temperature, cladding surface temperature, the departure from nucleate boiling (DNB) heat flux and DNB ratio, axial fuel centreline temperature and compared. The comparison indicates that the calculated values are in satisfactory agreement between the codes. The data obtained in this investigation are largely far to compromise safety of the reactor. The results can also be used to upgrade the current core configuration of the TRIGA reactor.

ACS Style

Mohammad Mizanur Rahman; Mohammad Abdur R. Akond; M. Khairul Basher; Quamrul Huda. Steady-State Thermal-Hydraulic Analysis of TRIGA Research Reactor. World Journal of Nuclear Science and Technology 2014, 04, 81 -87.

AMA Style

Mohammad Mizanur Rahman, Mohammad Abdur R. Akond, M. Khairul Basher, Quamrul Huda. Steady-State Thermal-Hydraulic Analysis of TRIGA Research Reactor. World Journal of Nuclear Science and Technology. 2014; 04 (02):81-87.

Chicago/Turabian Style

Mohammad Mizanur Rahman; Mohammad Abdur R. Akond; M. Khairul Basher; Quamrul Huda. 2014. "Steady-State Thermal-Hydraulic Analysis of TRIGA Research Reactor." World Journal of Nuclear Science and Technology 04, no. 02: 81-87.