6.5% efficient perovskite quantum-dot-sensitized solar cell

被引:2722
|
作者
Im, Jeong-Hyeok
Lee, Chang-Ryul
Lee, Jin-Wook
Park, Sang-Won
Park, Nam-Gyu [1 ]
机构
[1] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea
基金
新加坡国家研究基金会;
关键词
TIO2; ELECTRODES; CDSE; NANOCRYSTALS; TRANSITION; EXCITONS; FILMS; CDTE;
D O I
10.1039/c1nr10867k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Highly efficient quantum-dot-sensitized solar cell is fabricated using ca. 2-3 nm sized perovskite (CH(3)NH(3))PbI(3) nanocrystal. Spin-coating of the equimolar mixture of CH(3)NH(3)I and PbI(2) in gamma-butyrolactone solution (perovskite precursor solution) leads to (CH(3)NH(3))PbI(3) quantum dots (QDs) on nanocrystalline TiO(2) surface. By electrochemical junction with iodide/iodine based redox electrolyte, perovskite QD-sensitized 3.6 mu m-thick TiO(2) film shows maximum external quantum efficiency (EQE) of 78.6% at 530 nm and solar-to-electrical conversion efficiency of 6.54% at AM 1.5G 1 sun intensity (100 mW cm(-2)), which is by far the highest efficiency among the reported inorganic quantum dot sensitizers.
引用
收藏
页码:4088 / 4093
页数:6
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