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

Hou, Yi; Aydin, Erkan; De Bastiani, Michele; Xiao, Chuanxiao; Isikgor, Furkan H.; Xue, Ding-Jiang; Chen, Bin; Chen, Hao; Bahrami, Behzad; Chowdhury, Ashraful H.; Johnston, Andrew; Baek, Se-Woong; Huang, Ziru; Wei, Mingyang; Dong, Yitong; Troughton, Joel; Jalmood, Rawan; Mirabelli, Alessandro J.; Allen, Thomas G.; Van Kerschaver, Emmanuel; Saidaminov, Makhsud I.; Baran, Derya; Qiao, Qiquan; Zhu, Kai; De Wolf, Stefaan; Sargent, Edward H.

doi:10.1126/science.aaz3691

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

Journal Article · Thu Mar 05 00:00:00 EST 2020 · Science

DOI:https://doi.org/10.1126/science.aaz3691· OSTI ID:1603223

; ; ; Xiao, Chuanxiao; ; ; Chen, Bin; Chen, Hao; ; ; ; ; ; Wei, Mingyang; ; Troughton, Joel; Jalmood, Rawan; ; ; Van Kerschaver, Emmanuel more »

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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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1603223

Alternate ID(s):: OSTI ID: 1605084

Report Number(s):: NREL/JA--5K00-75985; /sci/367/6482/1135.atom

Journal Information:: Science, Journal Name: Science Journal Issue: 6482 Vol. 367; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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14 SOLAR ENERGY
36 MATERIALS SCIENCE
perovskites
silicon solar cells
textured silicon
wide-band gap

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

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