2020 Fiscal Year Annual Research Report
欠陥フリー低鉛ペロブスカイトナノ結晶の基礎研究と光電デバイスへの応用
| Project/Area Number |
18F18370
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
沈 青 電気通信大学, 大学院情報理工学研究科, 教授 (50282926)
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| Co-Investigator(Kenkyū-buntansha) |
LIU FENG 電気通信大学, 情報理工学(系)研究科, 外国人特別研究員
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| Project Period (FY) |
2018-11-09 – 2021-03-31
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| Keywords | 量子ドット / ペロブスカイト / 低欠陥 / 太陽電池 / quantum dots / perovskite / less defect / solar cell |
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| Outline of Annual Research Achievements |
In the research, we have proposed improved synthetic methods which can lead to significantly improved crystal quality and stability for the resulting perovskite Pb-based QD and Sn-Pb alloyed QD solutions. We have demonstrated that a high photoluminescence quantum yield of up to 100% can be obtained in the Pb-based perovskite QDs, signifying the achievement of almost complete elimination of the trapping defects. Ultrafast kinetic analysis evidences the negligible electron or hole trapping pathways in our QDs. Solar cells based on the high-quality QDs exhibit power conversion efficiency of over 12%. We expect the successful synthesis of the “ideal” perovskite QDs will exert profound influence on their applications to both QD-based light-harvesting and -emitting devices in the near future.
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| Research Progress Status |
令和2年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和2年度が最終年度であるため、記入しない。
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