Efficient tandem solar cells with solution-processed perovskite on textured crystalline silicon

Science
Yi HouEdward H Sargent

Abstract

Stacking solar cells with decreasing band gaps to form tandems presents the possibility of overcoming the single-junction Shockley-Queisser limit in photovoltaics. The rapid development of solution-processed perovskites has brought perovskite single-junction efficiencies >20%. However, this process has yet to enable monolithic integration with industry-relevant textured crystalline silicon solar cells. We report tandems that combine solution-processed micrometer-thick perovskite top cells with fully textured silicon heterojunction bottom cells. To overcome the charge-collection challenges in micrometer-thick perovskites, we enhanced threefold the depletion width at the bases of silicon pyramids. Moreover, by anchoring a self-limiting passivant (1-butanethiol) on the perovskite surfaces, we enhanced the diffusion length and further suppressed phase segregation. These combined enhancements enabled an independently certified power conversion efficiency of 25.7% for perovskite-silicon tandem solar cells. These devices exhibited negligible performance loss after a 400-hour thermal stability test at 85°C and also after 400 hours under maximum power point tracking at 40°C.

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Citations

Sep 11, 2020·Advanced Materials·Kyung Mun YeomSang Hyuk Im
Oct 14, 2020·Advanced Materials·Yohan KoYongseok Jun
Nov 12, 2020·Physical Chemistry Chemical Physics : PCCP·Taketo HandaYoshihiko Kanemitsu
Nov 12, 2020·Advanced Materials·Taylor MootJoseph M Luther
Nov 13, 2020·Nanoscale Research Letters·Yawei KuangYushen Liu
Jan 8, 2021·Chemical Society Reviews·Ammarah KausarYue Zhang
Jan 9, 2021·Frontiers in Chemistry·Na LiuQi Chen
Apr 24, 2021·Nature Nanotechnology·Zhiyuan YanRong Zhao
Apr 28, 2021·Journal of the American Chemical Society·Jiantao WangHsing-Lin Wang
Apr 21, 2020·Joule·Brandon R Sutherland
May 13, 2021·Chemical Society Reviews·Cong ChenHongwei Song
Jun 8, 2021·Chemical Science·Diego Di GirolamoAntonio Abate
Jun 17, 2021·Journal of the American Chemical Society·Mingjie FengLi-Jun Wan
Jul 27, 2021·ACS Energy Letters·Elizabeth M TennysonSamuel D Stranks
Jul 8, 2021·Nano-micro Letters·Tianhao WuLiyuan Han
Jul 13, 2021·Chemical Reviews·Jie ChenOsman M Bakr
Jul 29, 2021·Inorganic Chemistry·Jiyu TianFinlay D Morrison
Aug 14, 2020·Chemical Reviews·Hui Li, Wei Zhang
May 12, 2020·Journal of the American Chemical Society·Xiao-Gang ChenRen-Gen Xiong
Jun 3, 2020·ACS Applied Materials & Interfaces·Jyoti V PatilChang Kook Hong
Sep 12, 2020·ACS Applied Materials & Interfaces·Wenzhan XuXiong Gong
Aug 14, 2020·Chemical Reviews·Jin Young KimNam-Gyu Park
Nov 14, 2021·Advanced Materials·Jiaying WuJames R Durrant

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