Influence of organic cations on the structural anisotropy in cubic lead halide perovskites
- Resource Type
- Conference
- Authors
- Sun, Shijing; Deng, Zeyu; Brivio, Federico; Wei, Fengxia; Bristowe, Paul D.; Cheetham, Anthony; Buonassisi, Tonio
- Source
- 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC) Photovoltaic Energy Conversion (WCPEC), 2018 IEEE 7th World Conference on. :2549-2552 Jun, 2018
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
Power, Energy and Industry Applications
Lead
Lattices
Strain
Stability analysis
Thermal stability
Photovoltaic cells
Crystals
hybrid perovskites
structural characterization
anisotropy
- Language
Intrinsic structural anisotropy in methylammonium (MA) and formamidinium (FA) lead halide perovskites were examined and by various laboratory X-ray diffraction techniques including both out-of-plane and in-plane geometries. Our quantitative analysis revealed the presence of anisotropic strain in the cubic perovskites. Comparative studies on FAPbBr 3 and MAPbBr 3 showed that the FAPbBr 3 lattice was more strained and the anisotropic features were rationalized using ab initio molecular dynamics simulations (AIMD). Our results shed light on future perovskite film design to minimize strain induced decomposition.