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박계춘,조재철,류용택 ( Gye Choon Park,Jae Cheol Cho,yong Tek Yoo ) 한국센서학회 1993 센서학회지 Vol.2 No.1
CdS and Se thin films were deposited on slide glass by EBE method respectively and surface morphology, crystal structure, electrical and optical properties were investigated by substrate temperature and annealing. The deposited CdS film was well fabricated with cubic structure at substrate temperature of 150℃, Se film was deposited with noncrystal structure until substrate temperature of 100℃, but Se film was grown with monoclinic structure at substrate temperature of 150℃. And so. after annealing at 150℃ for 15min, noncrystalline Se was proved to be hexagonal structure. Finally, the maximum output of Se/CdS heterojunction at 5000 lux was 4 mW/㎠ and maximum spectral sensitivity was represented at 585nm.
박계춘,정운조,유용택 한국전기전자재료학회 1994 電氣電子材料學會誌 Vol.7 No.1
Structural and optical characteristics in $SnO_2$/a-Se/Al sample by aging variation and applying constant voltage had been investigated. a-Se was varied with monoclinic structure and its surface was greatly exchanged. Its capacitance was first decreased and then increased and its photo-current, photo-voltage and photo-capacitance were increased gradually with day and applying voltage. From the results, crystallization of a-Se and dopant trap level formation had been identified. Also, it was acknowledged $SnO_2$/a-Se/Al sample is useful in photovoltaic and solid thin film cell.
태양전지용 MgF<sub>2</sub> 반사방지막 특성연구
박계춘(Park, Gye-Choon),양현훈(Yang, Hyeon-Hun),백수웅(Baek, Su-Ung),나길주(Na, Kil-Ju),소순열(So, Soon-Youl),이진(Lee, Jin),정해덕(Chung, Hae-Deok) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.11
MgF₂ is a current material for the optical applications in the UV and deep UV range. Process variables for manufacturing the MgF₂ thin film were established in order to clarify optimum conditions for growth of the thin film depending upon process conditions, and then by changing a number of vapor deposition conditions and substrate temperature, Annealing conditions variously, structural and Optical characteristics were measured. Thereby, optimum process variables were derived. Nevertheless, modern applications still require improvement of the optical and structural quality of the deposited layers. In the present work, the composition and microstructure of MgF₂ single layers grown on slide glass substrate by Electro beam Evaporator(KV-660) processes, were analyzed and compared. The surface Substrate temperature having an effect on the quality of the thin film was changed from 200[?C] to 350[?C] at intervals of 50[?C]. and annealing temperature an effect on the thin film was changed from 200[?C] to 400[?C] at intervals of 50[?C]. Physical properties of the thin film were investigated at various fabrication conditions substrate temperature, annealing and temperature, annealing time by XRD, FE-SEM.