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Zu-Po Yang
Institute of Photonic System, National Chiao Tung University, Tainan, 71150, Taiwan

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Journal article
Published: 04 November 2020 in Organic Electronics
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Solid-state light-emitting electrochemical cells (LECs) with promising features of solution processability, low-voltage operation and compatibility with inert cathode metals have shown great potential in display and lighting applications in recent years. Among the reported emissive materials for LECs, ionic transition metal complexes (iTMCs) have relatively higher electroluminescence (EL) efficiencies due to their phosphorescent property. However, the red iTMCs generally exhibit moderate color saturation and low emission efficiency, limiting their display applications. To improve color saturation and device efficiency of red LECs, efficient quantum dots (QDs) with narrow emission bandwidth are good alternative emissive materials. In this work, efficient and saturated red QD LECs employing iTMC carrier injection layers to provide in situ electrochemical doping are demonstrated. The thicknesses of iTMC and red-QD layers are systematically adjusted to achieve the best carrier balance. In the optimized device, the iTMC carrier injection layer facilitates hole injection into the red-QD layer while electrons are injected from the cathode into the red-QD layer directly since the electron injection barrier is low. The Commission Internationale de I'Eclairage (CIE) coordinates of the EL spectra approach the red standard point of National Television System Committee (NTSC). High external quantum efficiency and current efficiency reaching 9.7% and 16.1 cd A−1, respectively. These results confirm superior carrier balance in such a simple iTMC/QD bilayer device structure. Furthermore, compared with iTMC LECs, less degree of device efficiency roll-off upon increasing device current is observed in QD LECs since a shorter excited-state lifetime of fluorescent QDs reduces the probability of collision exciton quenching. Saturated and efficient red EL with mitigated efficiency roll-off from red-QD LECs employing iTMC carrier injection layers confirms that they are good candidates of saturated light sources for displays.

ACS Style

Yi-Chan Chiu; Rong-Huei Yi; Ting-Yu Ou; Dian Luo; Jiun-Yi Lien; Zu-Po Yang; Chin-Wei Lu; Hai-Ching Su. Optimizing carrier balance of a red quantum-dot light-emitting electrochemical cell with a carrier injection layer of cationic Ir(III) complex. Organic Electronics 2020, 88, 106016 .

AMA Style

Yi-Chan Chiu, Rong-Huei Yi, Ting-Yu Ou, Dian Luo, Jiun-Yi Lien, Zu-Po Yang, Chin-Wei Lu, Hai-Ching Su. Optimizing carrier balance of a red quantum-dot light-emitting electrochemical cell with a carrier injection layer of cationic Ir(III) complex. Organic Electronics. 2020; 88 ():106016.

Chicago/Turabian Style

Yi-Chan Chiu; Rong-Huei Yi; Ting-Yu Ou; Dian Luo; Jiun-Yi Lien; Zu-Po Yang; Chin-Wei Lu; Hai-Ching Su. 2020. "Optimizing carrier balance of a red quantum-dot light-emitting electrochemical cell with a carrier injection layer of cationic Ir(III) complex." Organic Electronics 88, no. : 106016.

Journal article
Published: 22 April 2020 in Applied Surface Science
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From the point of view in sustainable energy, photovoltaic (PV) technology has been recognized as one of the most suitable solutions to replace fossil fuel technologies for electrical generation. However, in PV modules, 95% of solar cells made from P-type boron doped CZ-grown silicon substrates have a reliability issue, called light induced degradation (LID), which strongly affects their practically long-term use. Carrier induced hydrogenation (CIH) is one of the solutions through injection of excess carrier into Si solar cells with moderate thermal treatment. The mechanism of CIH process is the passivation of B-O related defects by hydrogen atoms with negative charge state. In the report, we can find the efficiency enhancement of commercial passivated emitter and rear cells (PERC) by hydrogenated silicon nitride (SiNx:H) films which were prepared by plasma-enhanced chemical vapor deposition and released hydrogen for Si passivation. In order to understand the behaviors of hydrogenation in Si solar cells, we manipulate the amount of hydrogen effused from the rear SiNx:H layers into the silicon substrate. A quadratic trend of average conversion efficiency gain for solar cells was observed after CIH treatment process. The mechanism of hydrogenation for PERC, including carrier induced hydrogenation and excess-hydrogen induced degradation, was investigated.

ACS Style

Tsung-Cheng Chen; Ing-Song Yu; Zu-Po Yang. Hydrogenation behaviors in passivated emitter and rear silicon solar cells with variously hydrogenated SiNx films. Applied Surface Science 2020, 521, 146386 .

AMA Style

Tsung-Cheng Chen, Ing-Song Yu, Zu-Po Yang. Hydrogenation behaviors in passivated emitter and rear silicon solar cells with variously hydrogenated SiNx films. Applied Surface Science. 2020; 521 ():146386.

Chicago/Turabian Style

Tsung-Cheng Chen; Ing-Song Yu; Zu-Po Yang. 2020. "Hydrogenation behaviors in passivated emitter and rear silicon solar cells with variously hydrogenated SiNx films." Applied Surface Science 521, no. : 146386.

Journal article
Published: 19 November 2019 in Sustainability
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Rice husk (RH) contains abundant silica such that RH silica (RHS) may be useful for possible industrial exploitation. Here, amorphous silica nanoparticles with multiple pore structures were acquired from RH by simple thermochemical processes. RHS antimicrobial activity and effects on zebrafish innate immunity against pathogen infections were evaluated. A toxicity assay showed that zebrafish exposed to an RHS dose lower than 200 μg/mL did not exhibit damage to zebrafish embryonic development or juvenile survival. RHS showed a wide spectrum of bacteriostatic activity against a variety of pathogens including antibiotic-resistant pathogens, implying its potential application as an antimicrobial agent in diverse industries. Fish exposed to 20 or 200 μg/mL RHS exhibited significantly increased mRNA expression of immune-related genes, including IL-1β, IL-6, IL-15, TNF-α, COX-2a, TLR-4a, lysozyme, and complement C3b. RHS-treated zebrafish exhibited a higher cumulative survival compared to that in control fish after infecting with Aeromonas hydrophila and Streptococcus iniae. The present results showed that a safe RHS dose enhanced innate immunity against infections without toxic effects in healthy fish, suggesting that RHS may be developed as an immunostimulant for improving health status in aquaculture.

ACS Style

Yong-Han Hong; Chung-Chih Tseng; Desy Setyoningrum; Zu-Po Yang; Maftuch; Shao-Yang Hu. Rice Husk Silica Enhances Innate Immune in Zebrafish (Danio rerio) and Improves Resistance to Aeromonas hydrophila and Streptococcus iniae Infection. Sustainability 2019, 11, 6504 .

AMA Style

Yong-Han Hong, Chung-Chih Tseng, Desy Setyoningrum, Zu-Po Yang, Maftuch, Shao-Yang Hu. Rice Husk Silica Enhances Innate Immune in Zebrafish (Danio rerio) and Improves Resistance to Aeromonas hydrophila and Streptococcus iniae Infection. Sustainability. 2019; 11 (22):6504.

Chicago/Turabian Style

Yong-Han Hong; Chung-Chih Tseng; Desy Setyoningrum; Zu-Po Yang; Maftuch; Shao-Yang Hu. 2019. "Rice Husk Silica Enhances Innate Immune in Zebrafish (Danio rerio) and Improves Resistance to Aeromonas hydrophila and Streptococcus iniae Infection." Sustainability 11, no. 22: 6504.

Journal article
Published: 22 November 2018 in Coatings
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The issue of potential-induced degradation (PID) has gained more concerns due to causing the catastrophic failures in photovoltaic (PV) modules. One of the approaches to diminish PID is to modify the anti-reflection coating (ARC) layer upon the front surface of crystalline silicon solar cells. Here, we focus on the modification of ARC films to realize PID-free step-by-step through three delicate experiments. Firstly, the ARC films deposited by direct plasma enhanced chemical vapor deposition (PECVD) and by indirect PECVD were investigated. The results showed that the efficiency degradation of solar cells by indirect PECVD method is up to −33.82%, which is out of the IEC 62804 standard and is significantly more severe than by the direct PECVD method (−0.82%). Next, the performance of PID-resist for the solar cell via indirect PECVD was improved significantly (PID reduced from −31.82% to −2.79%) by a pre-oxidation step, which not only meets the standard but also has higher throughput than direct PECVD. Lastly, we applied a novel PECVD technology, called the pulsed-plasma (PP) PECVD method, to deal with the PID issue. The results of the HF-etching rate test and FTIR measurement indicated the films deposited by PP PECVD have higher potential against PID in consideration of less oxygen content in this film. That demonstrated the film properties were changed by applied a new control of freedom, i.e., PP method. In addition, the 96 h PID result of the integrated PP method was only −2.07%, which was comparable to that of the integrated traditional CP method. In summary, we proposed three effective or potential approaches to eliminate the PID issue, and all approaches satisfied the IEC 62804 standard of less than 5% power loss in PV modules.

ACS Style

Tsung-Cheng Chen; Ting-Wei Kuo; Yu-Ling Lin; Chen-Hao Ku; Zu-Po Yang; Ing-Song Yu. Enhancement for Potential-Induced Degradation Resistance of Crystalline Silicon Solar Cells via Anti-Reflection Coating by Industrial PECVD Methods. Coatings 2018, 8, 418 .

AMA Style

Tsung-Cheng Chen, Ting-Wei Kuo, Yu-Ling Lin, Chen-Hao Ku, Zu-Po Yang, Ing-Song Yu. Enhancement for Potential-Induced Degradation Resistance of Crystalline Silicon Solar Cells via Anti-Reflection Coating by Industrial PECVD Methods. Coatings. 2018; 8 (12):418.

Chicago/Turabian Style

Tsung-Cheng Chen; Ting-Wei Kuo; Yu-Ling Lin; Chen-Hao Ku; Zu-Po Yang; Ing-Song Yu. 2018. "Enhancement for Potential-Induced Degradation Resistance of Crystalline Silicon Solar Cells via Anti-Reflection Coating by Industrial PECVD Methods." Coatings 8, no. 12: 418.

Journals
Published: 17 October 2018 in Journal of Materials Chemistry C
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Saturated emission from light-emitting electrochemical cells integrated with CsPbX3 perovskite color conversion layers.

ACS Style

Cheng-Ming Wang; Yong-Ming Su; Ting-An Shih; Guan-Yu Chen; Yan-Zhi Chen; Chin-Wei Lu; Ing-Song Yu; Zu-Po Yang; Hai-Ching Su. Achieving highly saturated single-color and high color-rendering-index white light-emitting electrochemical cells by CsPbX3 perovskite color conversion layers. Journal of Materials Chemistry C 2018, 6, 12808 -12813.

AMA Style

Cheng-Ming Wang, Yong-Ming Su, Ting-An Shih, Guan-Yu Chen, Yan-Zhi Chen, Chin-Wei Lu, Ing-Song Yu, Zu-Po Yang, Hai-Ching Su. Achieving highly saturated single-color and high color-rendering-index white light-emitting electrochemical cells by CsPbX3 perovskite color conversion layers. Journal of Materials Chemistry C. 2018; 6 (47):12808-12813.

Chicago/Turabian Style

Cheng-Ming Wang; Yong-Ming Su; Ting-An Shih; Guan-Yu Chen; Yan-Zhi Chen; Chin-Wei Lu; Ing-Song Yu; Zu-Po Yang; Hai-Ching Su. 2018. "Achieving highly saturated single-color and high color-rendering-index white light-emitting electrochemical cells by CsPbX3 perovskite color conversion layers." Journal of Materials Chemistry C 6, no. 47: 12808-12813.

Journal article
Published: 06 October 2018 in Catalysts
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The photocatalysts of immobilized TiO2 film suffer from high carrier recombination loss when compared to its powder form. Although the TiO2 with rutile-anatase mixed phases has higher carrier separation efficiency than those with pure anatase or rutile phase, the single junction of anatase/rutile cannot avoid the recombination of separated carriers at the interface. In this study, we propose a TiO2/SnO2/Ni multi-heterojunction structure which incorporates both Schottky contact and staggered band alignment to reduce the carrier recombination loss. The low carrier recombination rate of TiO2 film in TiO2/SnO2/Ni multi-heterojunction structure was verified by its low photoluminescence intensity. The faster degradation of methylene blue for TiO2/SnO2/Ni multi-junctions than for the other fabricated structures, which means that the TiO2 films grown on the SnO2/Ni/Ti coated glass have a much higher photocatalytic activity than those grown on the blank glass, SnO2-coated and Ni/Ti-coated glasses, demonstrated its higher performance of photogenerated carrier separation.

ACS Style

Hsyi-En Cheng; Chi-Hsiu Hung; Ing-Song Yu; Zu-Po Yang. Strongly Enhancing Photocatalytic Activity of TiO2 Thin Films by Multi-Heterojunction Technique. Catalysts 2018, 8, 440 .

AMA Style

Hsyi-En Cheng, Chi-Hsiu Hung, Ing-Song Yu, Zu-Po Yang. Strongly Enhancing Photocatalytic Activity of TiO2 Thin Films by Multi-Heterojunction Technique. Catalysts. 2018; 8 (10):440.

Chicago/Turabian Style

Hsyi-En Cheng; Chi-Hsiu Hung; Ing-Song Yu; Zu-Po Yang. 2018. "Strongly Enhancing Photocatalytic Activity of TiO2 Thin Films by Multi-Heterojunction Technique." Catalysts 8, no. 10: 440.

Journal article
Published: 18 April 2018 in Applied Surface Science
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A thin film deposited on the front surface of solar cell plays an important role in reducing the reflection of incident light and providing surface passivation. Although ultrathin TiO2 films have shown excellent performance of surface passivation, simultaneously serving both functions is hindered by the crystallization issue, which can degrade the passivation quality of TiO2 film, as the film thickness is over certain value (few nanometer only). Here we showed that both functions can be satisfied by single material of titanium oxide film through atomic layer deposition at low temperatures. By varying deposition temperatures from 80 to 200 °C, the TiO2 film deposited at 80 °C can maintain its amorphous phase up to the thickness of 114 nm. In addition, the optimal thickness for antireflection calculated by OPAL 2 is 61 nm, meaning that amorphous TiO2 film to provide antireflection and surface passivation can be achieved. The passivation quality is verified by minority carrier lifetime measurement using photo-conductance decay method and presented the ultralow surface recombination velocity of 8.7 cm/s. Furthermore, the passivation mechanism is investigated by X-ray diffraction (XRD) and secondary ion mass spectroscopy (SIMS), in which the absence of crystalline issue is confirm and both chemical passivation (due to H termination) and field effect passivation (due to residual Cl atoms) are associated with the improvement of passivation quality. A post deposition anneal is conducted on the TiO2 film deposited at 80 °C. The results present that extra thermal budgets can ruin the passivation quality, which is explicated by the TiO2 crystallization as the temperature exceeding 350 °C from the XRD measurements, and by the descending of Cl atom (also field effect passivation) as increasing of the annealing temperature from the SIMS measurements.

ACS Style

Tsung-Cheng Chen; Tsuo-Chuan Yang; Hsyi-En Cheng; Ing-Song Yu; Zu-Po Yang. Single material TiO 2 thin film by atomic layer deposition for antireflection and surface passivation applications on p-type c-Si. Applied Surface Science 2018, 451, 121 -127.

AMA Style

Tsung-Cheng Chen, Tsuo-Chuan Yang, Hsyi-En Cheng, Ing-Song Yu, Zu-Po Yang. Single material TiO 2 thin film by atomic layer deposition for antireflection and surface passivation applications on p-type c-Si. Applied Surface Science. 2018; 451 ():121-127.

Chicago/Turabian Style

Tsung-Cheng Chen; Tsuo-Chuan Yang; Hsyi-En Cheng; Ing-Song Yu; Zu-Po Yang. 2018. "Single material TiO 2 thin film by atomic layer deposition for antireflection and surface passivation applications on p-type c-Si." Applied Surface Science 451, no. : 121-127.

Journal article
Published: 27 March 2018 in Nanoscale
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In this study, we experimentally demonstrated a flexible random laser fabricated on a polyethylene terephthalate (PET) substrate with a high degree of tunability in lasing emissions.

ACS Style

Ya-Ju Lee; Chun-Yang Chou; Zu-Po Yang; Thi Bich Hanh Nguyen; Yung-Chi Yao; Ting-Wei Yeh; Meng-Tsan Tsai; Hao-Chun Kuo. Flexible random lasers with tunable lasing emissions. Nanoscale 2018, 10, 10403 -10411.

AMA Style

Ya-Ju Lee, Chun-Yang Chou, Zu-Po Yang, Thi Bich Hanh Nguyen, Yung-Chi Yao, Ting-Wei Yeh, Meng-Tsan Tsai, Hao-Chun Kuo. Flexible random lasers with tunable lasing emissions. Nanoscale. 2018; 10 (22):10403-10411.

Chicago/Turabian Style

Ya-Ju Lee; Chun-Yang Chou; Zu-Po Yang; Thi Bich Hanh Nguyen; Yung-Chi Yao; Ting-Wei Yeh; Meng-Tsan Tsai; Hao-Chun Kuo. 2018. "Flexible random lasers with tunable lasing emissions." Nanoscale 10, no. 22: 10403-10411.

Article
Published: 13 March 2018 in ChemPlusChem
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The cover feature shows a white-light-emitting electrochemical cell (WLEC) composed of the non-doped blue-green LEC and the single composition perovskite nanocrystals, which serves as a color conversion layer. A laser scanning technique widely tunes the color temperature of the WLEC by modifying the perovskite nanocrystals. This approach has potential to simplify fabrication of the light sources for bedrooms, living room and working place. Details are given in the Full Paper by H. C. Su, Z. P. Yang and co-workers (DOI: 10.1002/cplu.201700422).

ACS Style

Wen-Kuang Wu; Cheng-Ming Wang; Ming-Che Chan; Jiun-Yi Lien; Yong-Ming Su; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Ken-Tsung Wong; Sue-Lein Wang. Cover Feature: Tuning the Color Temperature of White-Light-Emitting Electrochemical Cells by Laser-Scanning Perovskite-Nanocrystal Color Conversion Layers (ChemPlusChem 4/2018). ChemPlusChem 2018, 83, 142 -142.

AMA Style

Wen-Kuang Wu, Cheng-Ming Wang, Ming-Che Chan, Jiun-Yi Lien, Yong-Ming Su, Monima Sarma, Zu-Po Yang, Hai-Ching Su, Ken-Tsung Wong, Sue-Lein Wang. Cover Feature: Tuning the Color Temperature of White-Light-Emitting Electrochemical Cells by Laser-Scanning Perovskite-Nanocrystal Color Conversion Layers (ChemPlusChem 4/2018). ChemPlusChem. 2018; 83 (4):142-142.

Chicago/Turabian Style

Wen-Kuang Wu; Cheng-Ming Wang; Ming-Che Chan; Jiun-Yi Lien; Yong-Ming Su; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Ken-Tsung Wong; Sue-Lein Wang. 2018. "Cover Feature: Tuning the Color Temperature of White-Light-Emitting Electrochemical Cells by Laser-Scanning Perovskite-Nanocrystal Color Conversion Layers (ChemPlusChem 4/2018)." ChemPlusChem 83, no. 4: 142-142.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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A random laser is a unique system in which an assembly of disordered scatters is distributed all over the gain medium to sustain the required optical feedbacks by multiple scatterings for the stimulation of lasing action. Due to the absence of well-defined resonance cavity or rigid alignment of optical elements, it is hence difficult to control the random lasing emissions. In this study, we experimentally demonstrated a flexible random laser fabricated on the polyethylene terephthalate (PET) substrate with a high degree of tunability in lasing emissions. Random lasing wavelength is blue-shifted monolithically with the increasing of bending strains exerted on the PET substrate, and the maximum shift of lasing wavelength of ~15 nm was achieved as a 50% bending strain is exerted on the PET substrate. Such observation is highly repeatable and reversible, and it validates that we are able to control the lasing wavelengths by simply bending the flexible substrate. The result herein shows a great advance for the applications of flexible optoelectronic devices, including wearable devices, ultrathin display, and health sensors.

ACS Style

Ting-Wei Yeh; Chun-Yang Chou; Zu-Po Yang; Nguyen Thi Bich Hanh; Yung-Chi Yao; Meng-Tsan Tsai; Hao-Chun Kuo; Ya-Ju Lee. Tunable random lasing emissions by manipulating plasmonic coupling strengths on flexible substrates. Conference on Lasers and Electro-Optics 2018, JTh2A.52 .

AMA Style

Ting-Wei Yeh, Chun-Yang Chou, Zu-Po Yang, Nguyen Thi Bich Hanh, Yung-Chi Yao, Meng-Tsan Tsai, Hao-Chun Kuo, Ya-Ju Lee. Tunable random lasing emissions by manipulating plasmonic coupling strengths on flexible substrates. Conference on Lasers and Electro-Optics. 2018; ():JTh2A.52.

Chicago/Turabian Style

Ting-Wei Yeh; Chun-Yang Chou; Zu-Po Yang; Nguyen Thi Bich Hanh; Yung-Chi Yao; Meng-Tsan Tsai; Hao-Chun Kuo; Ya-Ju Lee. 2018. "Tunable random lasing emissions by manipulating plasmonic coupling strengths on flexible substrates." Conference on Lasers and Electro-Optics , no. : JTh2A.52.

Conference paper
Published: 01 January 2018 in Conference on Lasers and Electro-Optics
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For thermal images and related hotspot diagnosis on integrated circuits (ICs) during operation, we present a high temporal, spatial, and temperature resolution thermal microscope based on the thermal-optical properties of R6G thin film.

ACS Style

Guan-Yu Zhuo; Zu-Po Yang; Ming-Che Chan. Hotspot Detection in Integrated Circuits by Two-photon-fluorescence-based Thermal Microscope. Conference on Lasers and Electro-Optics 2018, JTu2A.93 .

AMA Style

Guan-Yu Zhuo, Zu-Po Yang, Ming-Che Chan. Hotspot Detection in Integrated Circuits by Two-photon-fluorescence-based Thermal Microscope. Conference on Lasers and Electro-Optics. 2018; ():JTu2A.93.

Chicago/Turabian Style

Guan-Yu Zhuo; Zu-Po Yang; Ming-Che Chan. 2018. "Hotspot Detection in Integrated Circuits by Two-photon-fluorescence-based Thermal Microscope." Conference on Lasers and Electro-Optics , no. : JTu2A.93.

Article
Published: 12 December 2017 in ChemPlusChem
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The development of white-light-emitting electrochemical cells (LECs) has attracted great attention owing to their numerous advantages. Recently, perovskite materials have also shown many outstanding optoelectronic properties in light absorption and emission, and hence they are suitable for serving as the color conversion layers (CCLs) in solid-state white-light-emitting diodes (LEDs). Here, white LECs were fabricated by integrating non-doped blue-green LECs with CCLs made of a single composition of perovskite nanocrystal (NCs). Moreover, the correlated color temperatures (CCTs) of the white LECs can be tuned by modifying the optical properties of the perovskite NCs, in the same way as so as the color conversion properties of CCLs are tuned, through laser scan. By controlling the laser power, scanning number, and duty cycle of the scanned grating patterns on perovskite-NC CCLs, the CCTs of the white LECs can be tuned from 2502 K to nearly 4300 K. Since this method is much different from that used with conventional CCLs, which use multiple compositions of perovskite NCs to produce white light, the inherent anion-exchange issue of perovskite NCs can be avoided.

ACS Style

Wen-Kuang Wu; Cheng-Ming Wang; Ming-Che Chan; Jiun-Yi Lien; Yong-Ming Su; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Ken-Tsung Wong; Sue-Lein Wang. Tuning the Color Temperature of White-Light-Emitting Electrochemical Cells by Laser-Scanning Perovskite-Nanocrystal Color Conversion Layers. ChemPlusChem 2017, 83, 239 -245.

AMA Style

Wen-Kuang Wu, Cheng-Ming Wang, Ming-Che Chan, Jiun-Yi Lien, Yong-Ming Su, Monima Sarma, Zu-Po Yang, Hai-Ching Su, Ken-Tsung Wong, Sue-Lein Wang. Tuning the Color Temperature of White-Light-Emitting Electrochemical Cells by Laser-Scanning Perovskite-Nanocrystal Color Conversion Layers. ChemPlusChem. 2017; 83 (4):239-245.

Chicago/Turabian Style

Wen-Kuang Wu; Cheng-Ming Wang; Ming-Che Chan; Jiun-Yi Lien; Yong-Ming Su; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Ken-Tsung Wong; Sue-Lein Wang. 2017. "Tuning the Color Temperature of White-Light-Emitting Electrochemical Cells by Laser-Scanning Perovskite-Nanocrystal Color Conversion Layers." ChemPlusChem 83, no. 4: 239-245.

Journal article
Published: 01 December 2017 in Organic Electronics
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ACS Style

Yea-Fen Jang; Tzu-Chun Lin; Jhih-Yan Guo; Chien-Ming Fan Chiang; Ming-Lun Wu; Hsin-Yi Shen; Tsung-Cheng Chen; Zu-Po Yang; Ya-Ju Lee; Hai-Ching Su; Chih-Hao Chang; Shun-Wei Liu. Enhancing extracted electroluminescence from light-emitting electrochemical cells by employing high-refractive-index substrates. Organic Electronics 2017, 51, 149 -155.

AMA Style

Yea-Fen Jang, Tzu-Chun Lin, Jhih-Yan Guo, Chien-Ming Fan Chiang, Ming-Lun Wu, Hsin-Yi Shen, Tsung-Cheng Chen, Zu-Po Yang, Ya-Ju Lee, Hai-Ching Su, Chih-Hao Chang, Shun-Wei Liu. Enhancing extracted electroluminescence from light-emitting electrochemical cells by employing high-refractive-index substrates. Organic Electronics. 2017; 51 ():149-155.

Chicago/Turabian Style

Yea-Fen Jang; Tzu-Chun Lin; Jhih-Yan Guo; Chien-Ming Fan Chiang; Ming-Lun Wu; Hsin-Yi Shen; Tsung-Cheng Chen; Zu-Po Yang; Ya-Ju Lee; Hai-Ching Su; Chih-Hao Chang; Shun-Wei Liu. 2017. "Enhancing extracted electroluminescence from light-emitting electrochemical cells by employing high-refractive-index substrates." Organic Electronics 51, no. : 149-155.

Journal article
Published: 01 December 2017 in Organic Electronics
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ACS Style

Chien-Ming Fan Chiang; Bo-Ren Chang; Ya-Ju Lee; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Hsyi-En Cheng; Ken-Tsung Wong. Improving color saturation of blue light-emitting electrochemical cells by plasmonic filters. Organic Electronics 2017, 51, 70 -75.

AMA Style

Chien-Ming Fan Chiang, Bo-Ren Chang, Ya-Ju Lee, Monima Sarma, Zu-Po Yang, Hai-Ching Su, Hsyi-En Cheng, Ken-Tsung Wong. Improving color saturation of blue light-emitting electrochemical cells by plasmonic filters. Organic Electronics. 2017; 51 ():70-75.

Chicago/Turabian Style

Chien-Ming Fan Chiang; Bo-Ren Chang; Ya-Ju Lee; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Hsyi-En Cheng; Ken-Tsung Wong. 2017. "Improving color saturation of blue light-emitting electrochemical cells by plasmonic filters." Organic Electronics 51, no. : 70-75.

Journal article
Published: 01 September 2017 in Organic Electronics
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ACS Style

Bo-Ruei Chiou; Hsiao-Chin Lee; Yea-Fen Jang; Zu-Po Yang; Yao-Chin Wang; Monima Sarma; Hai-Ching Su; Ken-Tsung Wong. Dynamically tuning the correlated color temperature of white light-emitting electrochemical cells with electrochromic filters. Organic Electronics 2017, 48, 248 -253.

AMA Style

Bo-Ruei Chiou, Hsiao-Chin Lee, Yea-Fen Jang, Zu-Po Yang, Yao-Chin Wang, Monima Sarma, Hai-Ching Su, Ken-Tsung Wong. Dynamically tuning the correlated color temperature of white light-emitting electrochemical cells with electrochromic filters. Organic Electronics. 2017; 48 ():248-253.

Chicago/Turabian Style

Bo-Ruei Chiou; Hsiao-Chin Lee; Yea-Fen Jang; Zu-Po Yang; Yao-Chin Wang; Monima Sarma; Hai-Ching Su; Ken-Tsung Wong. 2017. "Dynamically tuning the correlated color temperature of white light-emitting electrochemical cells with electrochromic filters." Organic Electronics 48, no. : 248-253.

Conference paper
Published: 18 July 2017 in Blockchain Technology and Innovations in Business Processes
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Biomedical materials have different optical properties (e.g. absorption) for different wavelengths. Therefore, probing biomedical materials with multiple wavelengths not only can get in-depth understanding of the detected biomedical materials but also can differentiate the detected biomedical materials. To achieve this purpose, in this conference paper, we present our initial results of building up a portable multiple-wavelength biomedical sensing system. At this initial phase, we assembled this kind of system with multiple wavelengths of light sources and photodetectors and preliminarily tested the absorbance of the glucose solutions with different concentrations. The result shows good linearity of the absorbance of the glucose solution with concentration. In addition, we also measured the absorbance of the glucose solutions using a broadband white light source and a spectrometer. This result also exhibits linearity but different slop of absorbance with glucose concentration, which confirms the linearity result obtained from the built sensing system. The difference of slop maybe relates to the difference of optical design between these two systems.

ACS Style

Yen-Lin Yeh; Zu-Po Yang; Yao-Chin Wang. Initial Phase of Building up a Portable Multiple-Wavelength Biomedical Sensing System. Blockchain Technology and Innovations in Business Processes 2017, 81, 183 -188.

AMA Style

Yen-Lin Yeh, Zu-Po Yang, Yao-Chin Wang. Initial Phase of Building up a Portable Multiple-Wavelength Biomedical Sensing System. Blockchain Technology and Innovations in Business Processes. 2017; 81 ():183-188.

Chicago/Turabian Style

Yen-Lin Yeh; Zu-Po Yang; Yao-Chin Wang. 2017. "Initial Phase of Building up a Portable Multiple-Wavelength Biomedical Sensing System." Blockchain Technology and Innovations in Business Processes 81, no. : 183-188.

Article
Published: 01 May 2017 in SID Symposium Digest of Technical Papers
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White light-emitting electrochemical cells employing integrated plasmonic notch filter to tailor the electroluminescence spectrum of non-doped blue-green emissive material are demonstrated. The plasmonic notch filter is composed of randomly distributed silver nanoparticles embedded in the indium-tin-oxide anode contact, which is compatible with well developed technologies used in light-emitting diode industry.

ACS Style

Hsiao-Chin Lee; Chia-Ching Lin; Yung-Chi Yao; Monima Sarma; Hai-Ching Su; Zu-Po Yang; Ya-Ju Lee; Ken-Tsung Wong. P-114: Non-Doped White Light-Emitting Electrochemical Cells Employing Plasmonic Notch Filters. SID Symposium Digest of Technical Papers 2017, 48, 1686 -1689.

AMA Style

Hsiao-Chin Lee, Chia-Ching Lin, Yung-Chi Yao, Monima Sarma, Hai-Ching Su, Zu-Po Yang, Ya-Ju Lee, Ken-Tsung Wong. P-114: Non-Doped White Light-Emitting Electrochemical Cells Employing Plasmonic Notch Filters. SID Symposium Digest of Technical Papers. 2017; 48 (1):1686-1689.

Chicago/Turabian Style

Hsiao-Chin Lee; Chia-Ching Lin; Yung-Chi Yao; Monima Sarma; Hai-Ching Su; Zu-Po Yang; Ya-Ju Lee; Ken-Tsung Wong. 2017. "P-114: Non-Doped White Light-Emitting Electrochemical Cells Employing Plasmonic Notch Filters." SID Symposium Digest of Technical Papers 48, no. 1: 1686-1689.

Journal article
Published: 06 February 2017 in Optical Materials Express
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The plasmonic properties of titanium nitride (TiN) films depend on the type of substrate when using typical deposition methods such as sputtering. Here we show atomic layer deposition (ALD) of TiN films with very weak dependence of plasmonic properties on the substrate, which also suggests the prediction and evaluation of plasmonic performance of TiN nanostructures on arbitrary substrates under a given deposition condition. Our results also observe that substrates with more nitrogen-terminated (N-terminated) surfaces will have significant impact on the deposition rate as well as the film plasmonic properties. We further illustrate that the plasmonic properties of ALD TiN films can be tailored by simply adjusting the deposition and/or post-deposition annealing temperatures. Such characteristics and the capability of conformal coating make ALD TiN films on templates ideal for applications that require the fabrication of complex 3D plasmonic nanostructures.

ACS Style

Ing-Song Yu; Hsyi-En Cheng; Chun-Chieh Chang; Yan-Wei Lin; Hou-Tong Chen; Yao-Chin Wang; Zu-Po Yang. Substrate-insensitive atomic layer deposition of plasmonic titanium nitride films. Optical Materials Express 2017, 7, 777 -784.

AMA Style

Ing-Song Yu, Hsyi-En Cheng, Chun-Chieh Chang, Yan-Wei Lin, Hou-Tong Chen, Yao-Chin Wang, Zu-Po Yang. Substrate-insensitive atomic layer deposition of plasmonic titanium nitride films. Optical Materials Express. 2017; 7 (3):777-784.

Chicago/Turabian Style

Ing-Song Yu; Hsyi-En Cheng; Chun-Chieh Chang; Yan-Wei Lin; Hou-Tong Chen; Yao-Chin Wang; Zu-Po Yang. 2017. "Substrate-insensitive atomic layer deposition of plasmonic titanium nitride films." Optical Materials Express 7, no. 3: 777-784.

Research article
Published: 10 November 2016 in ACS Applied Materials & Interfaces
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Recently, the control of correlated color temperature (CCT) of artificial solid-state white-light sources starts to attract more attention since CTs affect human physiology and health profoundly. In this work, we proposed and demonstrated a method that can widely tune the CCTs of electroluminescence (EL) from white-light-emitting electrochemical cells (LECs) by employing plasmonic filters. These integrated on-chip plasmonic filters are composed of semicontinuous thin Ag film or Ag nanoparticles (NPs) both included in the indium tin oxide anode contact, which have different characteristics of plasmonic resonant absorptions that can tune the EL spectra of white LECs. The CCTs of EL from white LECs integrated with semicontinuous thin Ag film and randomly distributed Ag NPs are 5778 and 2350 K, respectively. A commercially available laser scanning system was used to locally thermal anneal the semicontinuous thin Ag film to form the randomly distributed Ag NPs on the scanned areas. Hence, these two kinds of filters can be integrated on the same chip of white LEC, giving more freedom to control the CCTs of white EL and more potential applications. In addition, the laser scanning system used here is quite often used in display manufactures so that our proposed method can be immediately adopted by the light-emitting diode industry.

ACS Style

Hsiao-Chin Lee; Chien-Ming Fan Chiang; Po-Yi Wu; Yung-Chi Yao; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Ya-Ju Lee; Ken-Tsung Wong. Laser-Scanned Programmable Color Temperature of Electroluminescence from White Light-Emitting Electrochemical Cells. ACS Applied Materials & Interfaces 2016, 8, 31799 -31805.

AMA Style

Hsiao-Chin Lee, Chien-Ming Fan Chiang, Po-Yi Wu, Yung-Chi Yao, Monima Sarma, Zu-Po Yang, Hai-Ching Su, Ya-Ju Lee, Ken-Tsung Wong. Laser-Scanned Programmable Color Temperature of Electroluminescence from White Light-Emitting Electrochemical Cells. ACS Applied Materials & Interfaces. 2016; 8 (46):31799-31805.

Chicago/Turabian Style

Hsiao-Chin Lee; Chien-Ming Fan Chiang; Po-Yi Wu; Yung-Chi Yao; Monima Sarma; Zu-Po Yang; Hai-Ching Su; Ya-Ju Lee; Ken-Tsung Wong. 2016. "Laser-Scanned Programmable Color Temperature of Electroluminescence from White Light-Emitting Electrochemical Cells." ACS Applied Materials & Interfaces 8, no. 46: 31799-31805.

Journal article
Published: 19 August 2016 in Applied Sciences
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Titanium oxide (TiO2) films and TiO2/SiNx stacks have potential in surface passivation, anti-reflection coatings and carrier-selective contact layers for crystalline Si solar cells. A Si wafer, deposited with 8-nm-thick TiO2 film by atomic layer deposition, has a surface recombination velocity as low as 14.93 cm/s at the injection level of 1.0 × 1015 cm−3. However, the performance of silicon surface passivation of the deposited TiO2 film declines as its thickness increases, probably because of the stress effects, phase transformation, atomic hydrogen and thermal stability of amorphous TiO2 films. For the characterization of 66-nm-thick TiO2 film, the results of transmission electron microscopy show that the anatase TiO2 crystallinity forms close to the surface of the Si. Secondary ion mass spectrometry shows the atomic hydrogen at the interface of TiO2 and Si which serves for chemical passivation. The crystal size of anatase TiO2 and the homogeneity of TiO2 film can be deduced by the measurements of Raman spectroscopy and spectroscopic ellipsometry, respectively. For the passivating contacts of solar cells, in addition, a stack composed of 8-nm-thick TiO2 film and a plasma-enhanced chemical-vapor-deposited 72-nm-thick SiNx layer has been investigated. From the results of the measurement of the reflectivity and effective carrier lifetime, TiO2/SiNx stacks on Si wafers perform with low reflectivity and some degree of surface passivation for the Si wafer.

ACS Style

Zu-Po Yang; Hsyi-En Cheng; I-Hsuan Chang; Ing-Song Yu. Atomic Layer Deposition TiO2 Films and TiO2/SiNx Stacks Applied for Silicon Solar Cells. Applied Sciences 2016, 6, 233 .

AMA Style

Zu-Po Yang, Hsyi-En Cheng, I-Hsuan Chang, Ing-Song Yu. Atomic Layer Deposition TiO2 Films and TiO2/SiNx Stacks Applied for Silicon Solar Cells. Applied Sciences. 2016; 6 (8):233.

Chicago/Turabian Style

Zu-Po Yang; Hsyi-En Cheng; I-Hsuan Chang; Ing-Song Yu. 2016. "Atomic Layer Deposition TiO2 Films and TiO2/SiNx Stacks Applied for Silicon Solar Cells." Applied Sciences 6, no. 8: 233.