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

被引:2101
作者
Chen, Wei [1 ,2 ]
Wu, Yongzhen [1 ]
Yue, Youfeng [1 ]
Liu, Jian [1 ]
Zhang, Wenjun [2 ]
Yang, Xudong [3 ]
Chen, Han [3 ]
Bi, Enbing [3 ]
Ashraful, Islam [1 ]
Graetzel, Michael [4 ]
Han, Liyuan [1 ,3 ]
机构
[1] Natl Inst Mat Sci, Photovolta Mat Unit, Tsukuba, Ibaraki 3050047, Japan
[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Michael Gratzel Ctr Mesoscop Solar Cells, Wuhan 430074, Peoples R China
[3] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[4] Swiss Fed Inst Technol, Dept Chem & Chem Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland
基金
瑞士国家科学基金会; 日本科学技术振兴机构;
关键词
HIGH-PERFORMANCE; TITANIUM-OXIDE; THIN-FILMS; ELECTRON; LENGTHS; LIGHT;
D O I
10.1126/science.aad1015
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
收藏
页码:944 / 948
页数:5
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