Diffusion engineering of ions and charge carriers for stable efficient perovskite solar cells

被引:378
|
作者
Bi, Enbing [1 ,2 ]
Chen, Han [1 ]
Xie, Fengxian [2 ]
Wu, Yongzhen [2 ]
Chen, Wei [2 ]
Su, Yanjie [3 ]
Islam, Ashraful [2 ]
Gratzel, Michael [4 ]
Yang, Xudong [1 ]
Han, Liyuan [1 ,2 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[2] Natl Inst Mat Sci, Photovolta Mat Unit, Tsukuba, Ibaraki 3050047, Japan
[3] Shanghai Jiao Tong Univ, Key Lab Thin Film & Microfabricat, Sch Elect Informat & Elect Engn, Minist Educ,Dept Micro Nano Elect, Shanghai 200240, Peoples R China
[4] Ecole Polytech Fed Lausanne, Fac Basic Sci, Inst Chem Sci & Engn, LPI,Stn 6, CH-1015 Lausanne, Switzerland
基金
中国国家自然科学基金;
关键词
PERFORMANCE; ELECTRON; LENGTHS; STABILITY; LAYER;
D O I
10.1038/ncomms15330
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
Long-term stability is crucial for the future application of perovskite solar cells, a promising low-cost photovoltaic technology that has rapidly advanced in the recent years. Here, we designed a nanostructured carbon layer to suppress the diffusion of ions/molecules within perovskite solar cells, an important degradation process in the device. Furthermore, this nanocarbon layer benefited the diffusion of electron charge carriers to enable a high-energy conversion efficiency. Finally, the efficiency on a perovskite solar cell with an aperture area of 1.02 cm(2), after a thermal aging test at 85 degrees C for over 500 h, or light soaking for 1,000 h, was stable of over 15% during the entire test. The present diffusion engineering of ions/molecules and photo generated charges paves a way to realizing long-term stable and highly efficient perovskite solar cells.
引用
收藏
页数:7
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