TY - JOUR
T1 - Efficient tandem solar cells with solution-processed perovskite on textured crystalline silicon
AU - Hou, Yi
AU - Aydin, Erkan
AU - De Bastiani, Michele
AU - Xiao, Chuanxiao
AU - Isikgor, Furkan H.
AU - Xue, Ding Jiang
AU - Chen, Bin
AU - Chen, Hao
AU - Bahrami, Behzad
AU - Chowdhury, Ashraful H.
AU - Johnston, Andrew
AU - Baek, Se Woong
AU - Huang, Ziru
AU - Wei, Mingyang
AU - Dong, Yitong
AU - Troughton, Joel
AU - Jalmood, Rawan
AU - Mirabelli, Alessandro J.
AU - Allen, Thomas G.
AU - Van Kerschaver, Emmanuel
AU - Saidaminov, Makhsud I.
AU - Baran, Derya
AU - Qiao, Qiquan
AU - Zhu, Kai
AU - De Wolf, Stefaan
AU - Sargent, Edward H.
N1 - Publisher Copyright:
© 2020 American Association for the Advancement of Science. All rights reserved.
PY - 2020/3/6
Y1 - 2020/3/6
N2 - 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 undermaximumpower point tracking at 40°C.
AB - 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 undermaximumpower point tracking at 40°C.
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U2 - 10.1126/science.aay0262
DO - 10.1126/science.aay0262
M3 - Article
C2 - 32139544
AN - SCOPUS:85081532106
SN - 0036-8075
VL - 367
SP - 1135
EP - 1140
JO - Science
JF - Science
IS - 6482
ER -