期刊
SMALL
卷 16, 期 10, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201906681
关键词
energy band engineering; indoor application; perovskite solar cells; weak light harvesting
类别
资金
- National Natural Science Foundation of China [51722204, 51772197, 51422206, 51372159, 11675117]
- National Key Basic Research Program of China [2014CB931702]
- Key University Science Research Project of Jiangsu Province [17KJA430013]
- 1000 Youth Talents Plan
- 333 High-level Talents Cultivation Project of Jiangsu Province
- Six Talents Peak Project of Jiangsu Province
- Distinguished Young Scholars Foundation by Jiangsu Science and Technology Committee [BK20140009]
- Fundamental Research Funds for the Central Universities [ZYGX2016Z004]
- Sichuan Science and Technology Program [2016RZ0033, 2018RZ0082]
- Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
As the fastest developing photovoltaic device, perovskite solar cells have achieved an extraordinary power conversion efficiency (PCE) of 25.3% under AM 1.5 illumination. However, few studies have been devoted to perovskite solar cells harvesting artificial light, owing to the great challenge in the simultaneous manipulation of bandgap-adjustable perovskite materials, corresponding matched energy band structure of carrier transport materials, and interfacial defects. Herein, through systematic morphology, composition, and energy band engineering, high-quality Cs(0.05)MA(0.95)PbBr(x)I(3-)(x) perovskite as the light absorber and NbyTi1-yO2 (Nb:TiO2) as the electron transport material with an ideal energy band alignment are obtained simultaneously. The theoretical-limit-approaching record PCEs of 36.3% (average: 34.0 +/- 1.2%) under light-emitting diode (LED, warm white) and 33.2% under fluorescent lamp (cold white) are achieved simultaneously, as well as a PCE of 19.5% (average: 18.9 +/- 0.3%) under solar illumination. An integrated energy conversion and storage system based on an artificial light response solar cell and sodium-ion battery is established for diverse practical applications, including a portable calculator, quartz clock, and even environmental monitoring equipment. Over a week of stable operation shows its great practical potential and provides a new avenue to promote the commercialization of perovskite photovoltaic devices via integration with ingenious electronic devices.
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