| 학회 |
한국재료학회 |
| 학술대회 |
2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 |
22권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Characteristic Variation of The Cu2ZnSnS4-xSex Thin Film Solar Cell Inserted Carbon intermediate layer between the Absorber and Back contact |
| 초록 |
Cu2ZnSnS4-xSex(CZTSSe) absorber thin films were prepared on Mo coated soda-lime glass substrates by sulfurization of stacked Cu/Sn/Zn precursor thin films. Absorber layer were fabricated after sulfo-selenization process carried out in rapid thermal annealing (RTA) system. The resulting films were processed into solar cell devices following standard procedures, including chemical bath deposition of CdS (~60 nm), radio frequency (RF) sputtering of i-ZnO (~100 nm) and Al-ZnO (AZO) (~600 nm), and direct current (DC) sputtering of a patterned Al grid as the top electrode. Back contact modifications play an important role in improving solar energy conversion of CZTSSe thin film solar cells. Therefore, an investigation into carbon thin intermediate layer at CZTSSe/Mo contact has been studied. Deposition of this carbon intermediate layer has been carried out by thread coating. Effects of carbon intermediate layer on the microstructure, crystallinity, electrical properties, and cell efficiencies of CZTSSe thin film solar cells have been studied by using field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Raman spectroscopy, I-V measurement, and external quantum efficiency measurement system(EQE). The utilization of thin carbon layer readily boosted the efficiency of the CZTS based solar cell, especially improving the short circuit current density(Jsc) value. This is due to the aggregation of carbon at the inner walls of the void and reconnection of CZTS with back contact. Carbon intermediate layer aggregates at the inner wall of void decrease the sheet resistance (Rs) value leading to an improvement of the Jsc and hence the solar cell performance. |
| 저자 |
신형호1, 강명길1, 홍창우1, 김인영2, 고창식1, 장준성1, 윤재호3, 김진혁1
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| 소속 |
1전남대, 2GIST, 3에너지기술(연) |
| 키워드 |
<P>CZTSSe; Carbon; Interlayer; Back Contact; Thin Film Solar Cell; Solar Cell; Carbon internediate layer</P>
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| E-Mail |
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