Bandgap-universal passivation enables stable perovskite solar cells with low photovoltage loss
Hong Kong University of Science and Technology · University of Oxford · +2 more institutions
Abstract
The efficiency and longevity of metal-halide perovskite solar cells are typically dictated by nonradiative defect-mediated charge recombination. In this work, we demonstrate a vapor-based amino-silane passivation that reduces photovoltage deficits to around 100 millivolts (>90% of the thermodynamic limit) in perovskite solar cells of bandgaps between 1.6 and 1.8 electron volts, which is crucial for tandem applications. A primary-, secondary-, or tertiary-amino-silane alone negatively or barely affected perovskite crystallinity and charge transport, but amino-silanes that incorporate primary and secondary amines yield up to a 60-fold increase in photoluminescence quantum yield and preserve long-range…
Citation impact
- FWCI
- 30.39
- Percentile
- 100%
- References
- 80
Authors
17- YLYen‐Hung LinCorresponding
Hong Kong University of Science and Technology, University of Oxford, University of Hong Kong
- VVVikram Vikram
University of Oxford
- FYFengning Yang
University of Oxford
- XKX. K. Cao
Hong Kong University of Science and Technology, University of Hong Kong
- ADAkash Dasgupta
University of Oxford
Topics & keywords
- Passivation
- Perovskite (structure)
- Silane
- Crystallinity
- Materials science
- Optoelectronics
- Band gap
- Energy conversion efficiency
- Affordable and clean energy