期刊
NATURE COMMUNICATIONS
卷 11, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41467-020-15078-2
关键词
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资金
- National Key Research and Development Program of China [2016YFA0204000, 2016YFA0200700]
- ShanghaiTech start-up funding
- National Natural Science Foundation of China [61935016, U1632118, 21571129, 21625304, 21875280]
- Shanghai key research program [16JC1402100]
- Centre for Highresolution Electron Microscopy (ChEM), SPST, ShanghaiTech University [EM02161943]
- 1000 young talent program
Tin perovskite is rising as a promising candidate to address the toxicity and theoretical efficiency limitation of lead perovskite. However, the voltage and efficiency of tin perovskite solar cells are much lower than lead counterparts. Herein, indene-C-60 bisadduct with higher energy level is utilized as an electron transporting material for tin perovskite solar cells. It suppresses carrier concentration increase caused by remote doping, which significantly reduces interface carriers recombination. Moreover, indene-C-60 bisadduct increases the maximum attainable photovoltage of the device. As a result, the use of indene-C-60 bisadduct brings unprecedentedly high voltage of 0.94 V, which is over 50% higher than that of 0.6 V for device based on [6,6]-phenyl-C61-butyric acid methyl ester. The device shows a record power conversion efficiency of 12.4% reproduced in an accredited independent photovoltaic testing lab.
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