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JACS刊登 钟新华教授量子点太阳能电池的最新进展CuInS2-QDSCs
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文章题目：High Efficiency "Green" Quantum Dot Solar Cells 文章摘要：Semiconductor Quantum Dots (QDs) are extremely interesting materials for the development of photovoltaic devices, but currently present the drawback that the most efficient devices have been prepared with toxic heavy metals of Cd or Pb. Solar cells based on "green" QDs totally free of Cd or Pb present a modest efficiency of 2.52%. Herein we achieve effective surface passivation of the ternary CuInS2 (CIS) QDs that provides high photovoltaic quality core/shell CIS/ZnS (CISZ) QDs, leading to the development of high efficiency "green" QD solar cells that surpass the performance of those based on the toxic cadmium and lead chalcogenides QDs. Using wide absorption range QDs, CISZ based Quantum Dot Sensitized Solar Cell (QDSC) configuration with high QD loading and taking benefit of the recombination reduction with typeI core/shell structure, we boost the power conversion efficiency of Cd and Pb free QDSC to a record of 7.04% (with certified efficiency of 6.66%) under AM 1.5G one sun irradiation. This efficiency is the best performance to date for QDSCs and also demonstrates that it is possible to obtain comparable or even better photovoltaic performance from “green” CIS QDs to the toxic cadmium and lead chalcogenides QDs. 这篇文章是钟新华教授课题组关于量子点敏化太阳电池敏化探索的又一突破性进展，文章舍弃了剧毒的Cd、Pb等元素，采用低毒的CuInS2为敏化剂，通过Zn交换的方式改善了电池稳定性、电子再附合，并提到电池性能到了同类电池的最高水平。>7.04%  文章图片 |
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2014-05-31 09:46:04, 715.37 K
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