Nature Communications (Aug 2018)
Dipolar cations confer defect tolerance in wide-bandgap metal halide perovskites
- Hairen Tan,
- Fanglin Che,
- Mingyang Wei,
- Yicheng Zhao,
- Makhsud I. Saidaminov,
- Petar Todorović,
- Danny Broberg,
- Grant Walters,
- Furui Tan,
- Taotao Zhuang,
- Bin Sun,
- Zhiqin Liang,
- Haifeng Yuan,
- Eduard Fron,
- Junghwan Kim,
- Zhenyu Yang,
- Oleksandr Voznyy,
- Mark Asta,
- Edward H. Sargent
Affiliations
- Hairen Tan
- Department of Electrical and Computer Engineering, University of Toronto
- Fanglin Che
- Department of Electrical and Computer Engineering, University of Toronto
- Mingyang Wei
- Department of Electrical and Computer Engineering, University of Toronto
- Yicheng Zhao
- Department of Electrical and Computer Engineering, University of Toronto
- Makhsud I. Saidaminov
- Department of Electrical and Computer Engineering, University of Toronto
- Petar Todorović
- Department of Electrical and Computer Engineering, University of Toronto
- Danny Broberg
- Department of Materials Science and Engineering, University of California
- Grant Walters
- Department of Electrical and Computer Engineering, University of Toronto
- Furui Tan
- Department of Electrical and Computer Engineering, University of Toronto
- Taotao Zhuang
- Department of Electrical and Computer Engineering, University of Toronto
- Bin Sun
- Department of Electrical and Computer Engineering, University of Toronto
- Zhiqin Liang
- Department of Electrical and Computer Engineering, University of Toronto
- Haifeng Yuan
- Department of Electrical and Computer Engineering, University of Toronto
- Eduard Fron
- Department of Chemistry, KU Leuven
- Junghwan Kim
- Department of Electrical and Computer Engineering, University of Toronto
- Zhenyu Yang
- Department of Electrical and Computer Engineering, University of Toronto
- Oleksandr Voznyy
- Department of Electrical and Computer Engineering, University of Toronto
- Mark Asta
- Department of Materials Science and Engineering, University of California
- Edward H. Sargent
- Department of Electrical and Computer Engineering, University of Toronto
- DOI
- https://doi.org/10.1038/s41467-018-05531-8
- Journal volume & issue
-
Vol. 9,
no. 1
pp. 1 – 10
Abstract
The performance of wide-bandgap perovskite photovoltaics is limited by the undesired phase transition and high density of deep level traps. Here, Tan et al. incorporate dipolar methylammonium cation to make the material defect-tolerant and achieve a high power conversion efficiency of 20.7%.
