| 학회 |
한국재료학회 |
| 학술대회 |
2014년 가을 (11/27 ~ 11/28, 대전컨벤션센터) |
| 권호 |
20권 2호 |
| 발표분야 |
C. 에너지/환경 재료(Energy and Environmental Materials) |
| 제목 |
The influence of different composition ratio Se/(S+Se) in the photovoltaic properties of DC-sputtered Cu2ZnSn(SxSe1-x)4 thin films |
| 초록 |
The kesterite Cu2ZnSn(SxSe1-x)4 (CZTSSe) thin films were synthesized by sulfo-selenization of sputtered Cu/Sn/Zn stacked metallic precursors. Cu/Sn/Zn stacked metallic precursor thin films, sulfur powder, and Se pellets were placed in a graphite box and then annealed using rapid thermal annealing system in an Ar atmosphere at 520 °C for 10 min. The relative amount of S and Se powder was varied systematically to change Se/(S+Se) composition ratio in CZTSSe films. Systematic changes in XRD and Raman peak positions, absortion edge, and microstructure have been observed with increasing Se/(S+Se) ratio in the sulfo-selenized CZTSSe thin films. The 2θ position of (112) XRD plane and Raman peaks of CZTSSe thin films were systemically shifted toward a lower position. The optical band gap energy of CZTSSe thin films decreased with increasing Se/(S+Se) ratio. The best performance of CZTSSe thin film solar cell fabricated using a simple sulfo-selenization route shows conversion efficiency of 6.7 % (Voc:492 mV, Jsc:24.3 mA/cm2, FF:56.2 %, and active area:0.31 cm2) at Se/(S+Se) ratio of 0.46. |
| 저자 |
Han Seung Yang1, Seung Wook Shin2, Ganesh Agawane1, Soo Jung Yeo1, Yin Bo Wang1, Jeong Yong Lee2, Jin Hyeok Kim1
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| 소속 |
1Optoelectronic(s) Convergence Research Center and Dept. of Mater.Sci. & Eng., 2Center for Nanomaterials and Chemical Reactions |
| 키워드 |
CZTSSe; sulfo-selenization; sputtering; thin film solar cells; rapid thermal annealing
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| E-Mail |
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