Interfacial Residual Stress Relaxation in Perovskite Solar Cells with Improved Stability
Beijing Institute of Technology · Beijing Institute of Optoelectronic Technology · +3 more institutions
Abstract
To improve the photovoltaic performance (both efficiency and stability) in hybrid organic-inorganic halide perovskite solar cells, perovskite lattice distortion is investigated with regards to residual stress (and strain) in the polycrystalline thin films. It is revealed that residual stress is concentrated at the surface of the as-prepared film, and an efficient method is further developed to release this interfacial stress by A site cation alloying. This results in lattice reconstruction at the surface of polycrystalline thin films, which in turn results in low elastic modulus. Thus, a "bone-joint" configuration is constructed within the interface between the absorber and the carrier transport layer, which…
Citation impact
- FWCI
- 19.37
- Percentile
- 100%
- References
- 70
Authors
16- HWHao Wang
Beijing Institute of Technology, Beijing Institute of Optoelectronic Technology
- CZCheng Zhu
Beijing Institute of Technology, Beijing Institute of Optoelectronic Technology
- LLLang Liu
Beijing Institute of Technology, Beijing Institute of Optoelectronic Technology
- SMSai Ma
Beijing Institute of Technology, Beijing Institute of Optoelectronic Technology
- PLPengfei Liu
Beijing Institute of Technology, Beijing Institute of Optoelectronic Technology
Topics & keywords
- Materials science
- Residual stress
- Crystallite
- Composite material
- Perovskite (structure)
- Thin film
- Thermal stability
- Stress relaxation
- Affordable and clean energy