Large Stokes Shift and High Efficiency Luminescent Solar Concentrator Incorporated with CuInS2/ZnS Quantum Dots.
Large Stokes Shift and High Efficiency Luminescent Solar Concentrator Incorporated with CuInS2/ZnS Quantum Dots.
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结合 CuInS2/ZnS 量子点的大斯托克斯位移和高效发光太阳能聚光器
DOI：
10.1038/srep17777
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发表时间：
2015-12-08
影响因子：
4.6
通讯作者：
Wang K
中科院分区：
文献类型：
--
作者：
Li C;Chen W;Wu D;Quan D;Zhou Z;Hao J;Qin J;Li Y;He Z;Wang K
结合量子点（QDs）的发光太阳能聚光器（LSC）已被广泛认为是低成本太阳能的重要发展方向之一。在这项研究中，我们首次报道了一种集成了无重金属CuInS2/ZnS核/壳量子点的新型量子点- lsc，具有大斯托克斯位移和高光学效率。所制备的CuInS2/ZnS量子点具有高达81%的光致发光量子产率和大于150 nm的大位移等优点。CuInS2/ZnS QDs-LSC的光效率高达26.5%。QDs-LSC-PV器件的功率转换效率达到纯PMMA-PV器件的3倍以上。此外，对于相同尺寸的c-Si光伏电池，在这种新的CuInS2/ZnS QDs-LSC的帮助下，光伏装置能够收获4.91倍的太阳能。结果表明，这种新型CuInS2/ZnS QDs-LSC为高效、无害、低成本的太阳能发电提供了一条有前景的途径。
Luminescent solar concentrator (LSC) incorporated with quantum dots (QDs) have been widely regarded as one of the most important development trends of cost-effective solar energy. In this study, for the first time we report a new QDs-LSC integrated with heavy metal free CuInS2/ZnS core/shell QDs with large Stokes shift and high optical efficiency. The as-prepared CuInS2/ZnS QDs possess advantages of high photoluminescence quantum yield of 81% and large Stocks shift more than 150 nm. The optical efficiency of CuInS2/ZnS QDs-LSC reaches as high as 26.5%. Moreover, the power conversion efficiency of the QDs-LSC-PV device reaches more than 3 folds to that of pure PMMA-PV device. Furthermore, the PV device is able to harvest 4.91 folds solar energy with the assistance of this new CuInS2/ZnS QDs-LSC for the same size c-Si PV cell. The results demonstrate that this new CuInS2/ZnS QDs-LSC provides a promising way for the high efficiency, nonhazardous and low cost solar energy.