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Efficient and stable large-area perovskite solar cells with inorganic charge extraction layers

Wei ChenMichael Grätzel Centre for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaYongzhen WuPhotovoltaic Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, JapanYoufeng YuePhotovoltaic Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, JapanJian LiuPhotovoltaic Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, JapanWenjun ZhangMichael Grätzel Centre for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaXudong YangState Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dong Chuan Road, Minhang District, Shanghai 200240, ChinaHan ChenState Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dong Chuan Road, Minhang District, Shanghai 200240, ChinaEnbing BiState Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dong Chuan Road, Minhang District, Shanghai 200240, ChinaIslam AshrafulPhotovoltaic Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, JapanMichaël GrätzelLaboratory of Photonics and Interfaces, Department of Chemistry and Chemical Engineering, Swiss Federal Institute of Technology, Station 6, CH-1015 Lausanne, SwitzerlandLiyuan HanPhotovoltaic Materials Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan

2015en

ABI

Annotatsiya

The recent dramatic rise in power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) has triggered intense research worldwide. However, high PCE values have often been reached with poor stability at an illuminated area of typically less than 0.1 square centimeter. We used heavily doped inorganic charge extraction layers in planar PSCs to achieve very rapid carrier extraction, even with 10- to 20-nanometer-thick layers, avoiding pinholes and eliminating local structural defects over large areas. The robust inorganic nature of the layers allowed for the fabrication of PSCs with an aperture area >1 square centimeter that have a PCE >15%, as certified by an accredited photovoltaic calibration laboratory. Hysteresis in the current-voltage characteristics was eliminated; the PSCs were stable, with >90% of the initial PCE remaining after 1000 hours of light soaking.

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Identifikatorlar

DOI: 10.1126/science.aad1015

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