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Title: Fabrication of efficient low-bandgap perovskite solar cells by combining formamidinium tin iodide with methylammonium lead iodide

Mixed tin (Sn)-lead (Pb) perovskites with high Sn content exhibit low bandgaps suitable for fabricating the bottom cell of perovskite-based tandem solar cells. In this work, we report on the fabrication of efficient mixed Sn-Pb perovskite solar cells using precursors combining formamidinium tin iodide (FASnI 3) and methylammonium lead iodide (MAPbI 3). The best-performing cell fabricated using a (FASnI 3) 0.6(MAPbI 3) 0.4 absorber with an absorption edge of ~1.2 eV achieved a power conversion efficiency (PCE) of 15.08 (15.00)% with an open-circuit voltage of 0.795 (0.799) V, a short-circuit current density of 26.86(26.82) mA/cm 2, and a fill factor of 70.6(70.0)% when measured under forward (reverse) voltage scan. In conclusion, the average PCE of 50 cells we have fabricated is 14.39 ± 0.33%, indicating good reproducibility.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [4] ;  [2] ;  [2] ;  [2] ;  [5] ;  [6] ;  [2]
  1. The Univ. of Toledo, Toledo, OH (United States); Southeast Univ., Nanjing (China)
  2. The Univ. of Toledo, Toledo, OH (United States)
  3. The Univ. of Toledo, Toledo, OH (United States); Wuhan Univ., Wuhan (China)
  4. Wuhan Univ., Wuhan (China)
  5. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  6. Southeast Univ., Nanjing (China)
Publication Date:
Report Number(s):
NREL/JA-5900-67260
Journal ID: ISSN 0002-7863
Grant/Contract Number:
AC36-08GO28308
Type:
Accepted Manuscript
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 138; Journal Issue: 38; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskites solar cells; precusors; methylammonium lead iodide; formamidinium tin iodide
OSTI Identifier:
1328732

Liao, Weiqiang, Zhao, Dewei, Yu, Yue, Shrestha, Niraj, Ghimire, Kiran, Grice, Corey R., Wang, Changlei, Xiao, Yuqing, Cimaroli, Alexander J., Ellingson, Randy J., Podraza, Nikolas J., Zhu, Kai, Xiong, Ren -Gen, and Yan, Yanfa. Fabrication of efficient low-bandgap perovskite solar cells by combining formamidinium tin iodide with methylammonium lead iodide. United States: N. p., Web. doi:10.1021/jacs.6b08337.
Liao, Weiqiang, Zhao, Dewei, Yu, Yue, Shrestha, Niraj, Ghimire, Kiran, Grice, Corey R., Wang, Changlei, Xiao, Yuqing, Cimaroli, Alexander J., Ellingson, Randy J., Podraza, Nikolas J., Zhu, Kai, Xiong, Ren -Gen, & Yan, Yanfa. Fabrication of efficient low-bandgap perovskite solar cells by combining formamidinium tin iodide with methylammonium lead iodide. United States. doi:10.1021/jacs.6b08337.
Liao, Weiqiang, Zhao, Dewei, Yu, Yue, Shrestha, Niraj, Ghimire, Kiran, Grice, Corey R., Wang, Changlei, Xiao, Yuqing, Cimaroli, Alexander J., Ellingson, Randy J., Podraza, Nikolas J., Zhu, Kai, Xiong, Ren -Gen, and Yan, Yanfa. 2016. "Fabrication of efficient low-bandgap perovskite solar cells by combining formamidinium tin iodide with methylammonium lead iodide". United States. doi:10.1021/jacs.6b08337. https://www.osti.gov/servlets/purl/1328732.
@article{osti_1328732,
title = {Fabrication of efficient low-bandgap perovskite solar cells by combining formamidinium tin iodide with methylammonium lead iodide},
author = {Liao, Weiqiang and Zhao, Dewei and Yu, Yue and Shrestha, Niraj and Ghimire, Kiran and Grice, Corey R. and Wang, Changlei and Xiao, Yuqing and Cimaroli, Alexander J. and Ellingson, Randy J. and Podraza, Nikolas J. and Zhu, Kai and Xiong, Ren -Gen and Yan, Yanfa},
abstractNote = {Mixed tin (Sn)-lead (Pb) perovskites with high Sn content exhibit low bandgaps suitable for fabricating the bottom cell of perovskite-based tandem solar cells. In this work, we report on the fabrication of efficient mixed Sn-Pb perovskite solar cells using precursors combining formamidinium tin iodide (FASnI3) and methylammonium lead iodide (MAPbI3). The best-performing cell fabricated using a (FASnI3)0.6(MAPbI3)0.4 absorber with an absorption edge of ~1.2 eV achieved a power conversion efficiency (PCE) of 15.08 (15.00)% with an open-circuit voltage of 0.795 (0.799) V, a short-circuit current density of 26.86(26.82) mA/cm2, and a fill factor of 70.6(70.0)% when measured under forward (reverse) voltage scan. In conclusion, the average PCE of 50 cells we have fabricated is 14.39 ± 0.33%, indicating good reproducibility.},
doi = {10.1021/jacs.6b08337},
journal = {Journal of the American Chemical Society},
number = 38,
volume = 138,
place = {United States},
year = {2016},
month = {9}
}