Surface chemical polishing and passivation minimize non-radiative recombination for all-perovskite tandem solar cells
Wuhan National Laboratory for Optoelectronics · Huazhong University of Science and Technology · +5 more institutions
Abstract
All-perovskite tandem solar cells have shown great promise in breaking the Shockley–Queisser limit of single-junction solar cells. However, the efficiency improvement of all-perovskite tandem solar cells is largely hindered by the surface defects induced non-radiative recombination loss in Sn–Pb mixed narrow bandgap perovskite films. Here, we report a surface reconstruction strategy utilizing a surface polishing agent, 1,4-butanediamine, together with a surface passivator, ethylenediammonium diiodide, to eliminate Sn-related defects and passivate organic cation and halide vacancy defects on the surface of Sn–Pb mixed perovskite films. Our strategy not only delivers high-quality Sn–Pb mixed perovskite films…
Citation impact
- FWCI
- 25.29
- Percentile
- 100%
- References
- 50
Authors
22- YPYongyan PanCorresponding
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- JWJianan Wang
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- ZSZhenxing Sun
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- JZJiaqi Zhang
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- ZZZheng Zhou
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
Topics & keywords
- Passivation
- Perovskite (structure)
- Tandem
- Materials science
- Energy conversion efficiency
- Band gap
- Polishing
- Optoelectronics