Regulating strain in perovskite thin films through charge-transport layers
University of Toronto · Chinese Academy of Sciences · +4 more institutions
Abstract
Thermally-induced tensile strain that remains in perovskite films following annealing results in increased ion migration and is a known factor in the instability of these materials. Previously-reported strain regulation methods for perovskite solar cells (PSCs) have utilized substrates with high thermal expansion coefficients that limits the processing temperature of perovskites and compromises power conversion efficiency. Here we compensate residual tensile strain by introducing an external compressive strain from the hole-transport layer. By using a hole-transport layer with high thermal expansion coefficient, we compensate the tensile strain in PSCs by elevating the processing temperature of hole-transport…
Citation impact
- FWCI
- 34.02
- Percentile
- 100%
- References
- 46
Authors
14- DXDing‐Jiang XueCorresponding
University of Toronto, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry
- YHYi Hou
University of Toronto
- SLShunchang Liu
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry
- MWMingyang Wei
University of Toronto
- BCBin Chen
University of Toronto
Topics & keywords
- Materials science
- Perovskite (structure)
- Ultimate tensile strength
- Energy conversion efficiency
- Strain (injury)
- Thermal expansion
- Annealing (glass)
- Layer (electronics)
- Affordable and clean energy
Funding
- NNNational Natural Science Foundation of ChinaAwards: 2017050, 21922512, 21875264
- YIYouth Innovation Promotion Association of the Chinese Academy of SciencesAward: 2017050
- UNU.S. Navy
- NSNatural Sciences and Engineering Research Council of Canada
- YIYouth Innovation Promotion AssociationAwards: 21875264, 21922512, 2017050
- OOOffice of Naval ResearchAwards: N00014-17-1, N00014-17-1-2524, N00014