| Project/Area Number |
15K05980
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Nagaoka University of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
安井 寛治 長岡技術科学大学, 工学研究科, 教授 (70126481)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 薄膜太陽電池 / ポテンシャル搖動 / 発光スペクトル / Cu2ZnSnS4 / CZTS / 発光分光 |
|---|
| Outline of Final Research Achievements |
Potential fluctuations have been suspected that one of the cause of low efficiency of Cu2ZnSnS4 solar cells. In this study photoluminescence of samples with various chemical composition was investigated to reveal how to reduce potential fluctuations. Chemical composition dependence of potential fluctuations estimated from the photoluminescence showed that potential fluctuation could be reduced by Cu-poor chemical compositions. Grwoth temperature dependence of potential fluctuations was investigated from obsrevation of photoluminecence. As a result, the potential fluctuations were almost not depend on growth temperature. From the observation of the emission spectrum, it was also confirmed that the amount of potential fluctuation was reduced by post annealing.
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