Jin-Hyo Boo

Prof. Jin-Hyo Boo

SungKyunKwan Univerisity, Republic of Korea
orcid

Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 January 2012 in Discover Nano
Verified
Journal Article
Open access
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HKHyung Jin Kim
Hyung Jin Kim
IBIn-Seob Bae
In-Seob Bae
SCSang-Jin Cho
Sang-Jin Cho
Jin-Hyo BooJin-Hyo Boo
Jin-Hyo Boo
BLByungchae Lee
Byungchae Lee
BHByungyou Hong
Byungyou Hong
We developed a method to use NH2-functionalized polymer films to align and immobilize DNA molecules on a Si substrate. The plasma-polymerized cyclohexane film was deposited on the Si substrate according to the radio frequency plasma-enhanced chemical vapor deposition method using a single molecular precursor, and it was then treated by the dielectric barrier discharge method in a nitrogen environment under atmospheric pressure. Changes in the chemistry of the surface functional groups were studied using X-ray photoelectron spectroscopy and Fourier transformed infrared spectroscopy. The wettability of the surfaces was examined using dynamic contact angle measurements, and the surface morphology was evaluated using atomic force microscopy. We utilized a tilting method to align λ-DNA molecules that were immobilized by the electrostatic interaction between the amine groups in NH2-functionalized polymer films and the phosphate groups in the DNA. The DNA was treated with positively charged gold nanoparticles to make a conductive nanowire that uses the DNA as a template. We observed that the NH2-functionalized polymer film was useful for aligning and immobilizing the DNA, and thus the DNA-templated nanowires.

13 January 2022 in Scientific Reports
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Journal Article
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DKDong In Kim
Dong In Kim
JLJi Won Lee
Ji Won Lee
RJRak Hyun Jeong
Rak Hyun Jeong
Jin-Hyo BooJin-Hyo Boo
Jin-Hyo Boo
Over the past number of years, the power conversion efficiency of perovskite solar cells has remained at 25.5%, reflecting a respectable result for the general incorporation of organometallic trihalide perovskite solar cells. However, perovskite solar cells still suffer from long-term stability issues. Perovskite decomposes upon exposure to moisture, thermal, and UV-A light. Studies related to this context have remained ongoing. Recently, research was mainly conducted on the stability of perovskite against non-radiative recombination. This study improved a critical instability in perovskite solar cells arising from non-radiative recombination and UV-A light using a passivation layer. The passivation layer comprised a polyaniline (PANI) polymer as an interfacial modifier inserted between the active layer and the electron transport layer. Accordingly, the UV-A light did not reach the active layer and confined the Pb2+ ions at PANI passivation layer. This study optimized the perovskite solar cells by controlling the concentration, thickness and drying conditions of the PANI passivation layer. As a result, the efficiency of the perovskite solar cell was achieved 15.1% and showed over 84% maintain in efficiency in the ambient air for one month using the 65 nm PANI passivation layer.

1 December 2018 in Applied Surface Science
Verified
Journal Article
Closed access
HYHyeeun Yang
Hyeeun Yang
JYJung-Hoon Yu
Jung-Hoon Yu
HSHyeon Jin Seo
Hyeon Jin Seo
RJRak Hyun Jeong
Rak Hyun Jeong
Jin-Hyo BooJin-Hyo Boo
Jin-Hyo Boo

9 July 2016 in Materials
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Journal Article
Open access
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JYJung-Hoon Yu
Jung-Hoon Yu
SNSang-Hun Nam
Sang-Hun Nam
JLJi Won Lee
Ji Won Lee
Jin-Hyo BooJin-Hyo Boo
Jin-Hyo Boo
This paper presents the preparation of high-quality vanadium dioxide (VO2) thermochromic thin films with enhanced visible transmittance (Tvis) via radio frequency (RF) sputtering and plasma enhanced chemical vapor deposition (PECVD). VO2 thin films with high Tvis and excellent optical switching efficiency (Eos) were successfully prepared by employing SiO2 as a passivation layer. After SiO2 deposition, the roughness of the films was decreased 2-fold and a denser structure was formed. These morphological changes corresponded to the results of optical characterization including the haze, reflectance and absorption spectra. In spite of SiO2 coating, the phase transition temperature (Tc) of the prepared films was not affected. Compared with pristine VO2, the total layer thickness after SiO2 coating was 160 nm, which is an increase of 80 nm. Despite the thickness change, the VO2 thin films showed a higher Tvis value (λ 650 nm, 58%) compared with the pristine samples (λ 650 nm, 43%). This enhancement of Tvis while maintaining high Eos is meaningful for VO2-based smart window applications.

26 January 2012 in Discover Nano
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Journal Article
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SNSang-Hun Nam
Sang-Hun Nam
SCSang-Jin Cho
Sang-Jin Cho
Jin-Hyo BooJin-Hyo Boo
Jin-Hyo Boo
The hydrophilic TiO2 films were successfully deposited on slide glass substrates using titanium tetraisopropoxide as a single precursor without carriers or bubbling gases by a metal-organic chemical vapor deposition method. The TiO2 films were employed by scanning electron microscopy, Fourier transform infrared spectrometry, UV-Visible [UV-Vis] spectroscopy, X-ray diffraction, contact angle measurement, and atomic force microscopy. The temperature of the substrate was 500°C, and the temperatures of the precursor were kept at 75°C (sample A) and 60°C (sample B) during the TiO2 film growth. The TiO2 films were characterized by contact angle measurement and UV-Vis spectroscopy. Sample B has a very low contact angle of almost zero due to a superhydrophilic TiO2 surface, and transmittance is 76.85% at the range of 400 to 700 nm, so this condition is very optimal for hydrophilic TiO2 film deposition. However, when the temperature of the precursor is lower than 50°C or higher than 75°C, TiO2 could not be deposited on the substrate and a cloudy TiO2 film was formed due to the increase of surface roughness, respectively.

1 September 2019 in Applied Surface Science
Verified
Journal Article
Closed access
DKDong In Kim
Dong In Kim
JLJi Won Lee
Ji Won Lee
RJRak Hyun Jeong
Rak Hyun Jeong
JYJung-Hoon Yu
Jung-Hoon Yu
JYJu Won Yang
Ju Won Yang
Jin-Hyo BooJin-Hyo Boo
Jin-Hyo Boo