Reduction of Nonradiative Recombination at Perovskite/C 60 Interface in Inverted Perovskite Solar Cells
Sun Yat-sen University · Wuhan University of Technology
Abstract
Abstract Although p‐i‐n type inverted perovskite solar cells (PSCs) achieve excellent photoelectric efficiencies, the nonradiative recombination at the perovskite/C 60 interface is still the key factor affecting the overall efficiency of p‐i‐n PSCs. Herein, a synergistic passivation strategy (meta‐fluoro‐phenylethylammonium iodide and piperazine iodide) is developed to modify the perovskite/C 60 interface in p‐i‐n PSCs. This strategy facilitates in situ reconstruction of the perovskite film to obtain a smooth and flat perovskite surface. Furthermore, the two molecules work synergistically to passivate surface defects, adjust the interface energy levels, and bolster the interface electric field, all of which…
Citation impact
- FWCI
- 31.13
- Percentile
- 100%
- References
- 51
Authors
8Topics & keywords
- Perovskite (structure)
- Materials science
- Recombination
- Reduction (mathematics)
- Interface (matter)
- Optoelectronics
- Crystallography
- Composite material