气候变化领域集成服务门户(CCPortal): Triple-halide wide-band gap perovskites with suppressed phase segregation for efficient tandems

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DOI	10.1126/science.aaz4639
	Triple-halide wide-band gap perovskites with suppressed phase segregation for efficient tandems
	Xu J.; Boyd C.C.; Yu Z.J.; Palmstrom A.F.; Witter D.J.; Larson B.W.; France R.M.; Werner J.; Harvey S.P.; Wolf E.J.; Weigand W.; Manzoor S.; Van Hest M.F.A.M.; Berry J.J.; Luther J.M.; Holman Z.C.; McGehee M.D.
发表日期	2020
ISSN	0036-8075
起始页码	1097
结束页码	1104
卷号	367 期号:6482
英文摘要	Wide-band gap metal halide perovskites are promising semiconductors to pair with silicon in tandem solar cells to pursue the goal of achieving power conversion efficiency (PCE) greater than 30% at low cost. However, wide-band gap perovskite solar cells have been fundamentally limited by photoinduced phase segregation and low open-circuit voltage. We report efficient 1.67-electron volt wide-band gap perovskite top cells using triple-halide alloys (chlorine, bromine, iodine) to tailor the band gap and stabilize the semiconductor under illumination. We show a factor of 2 increase in photocarrier lifetime and charge-carrier mobility that resulted from enhancing the solubility of chlorine by replacing some of the iodine with bromine to shrink the lattice parameter. We observed a suppression of light-induced phase segregation in films even at 100-sun illumination intensity and less than 4% degradation in semitransparent top cells after 1000 hours of maximum power point (MPP) operation at 60°C. By integrating these top cells with silicon bottom cells, we achieved a PCE of 27% in two-terminal monolithic tandems with an area of 1 square centimeter. © 2020 American Association for the Advancement of Science. All rights reserved.
关键词	bromine chlorine halide iodine perovskite silicon degradation efficiency measurement energy efficiency equipment equipment component fuel cell halide performance assessment perovskite Article controlled study degradation electron energy conversion illumination lifespan phase separation power conversion efficiency priority journal solubility
语种	英语
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133661
推荐引用方式 GB/T 7714	Xu J.,Boyd C.C.,Yu Z.J.,et al. Triple-halide wide-band gap perovskites with suppressed phase segregation for efficient tandems[J]. Science,2020,367(6482).
APA	Xu J..,Boyd C.C..,Yu Z.J..,Palmstrom A.F..,Witter D.J..,...&McGehee M.D..(2020).Triple-halide wide-band gap perovskites with suppressed phase segregation for efficient tandems.,367(6482).
MLA	Xu J.,et al."Triple-halide wide-band gap perovskites with suppressed phase segregation for efficient tandems".367.6482(2020).