Lead‐Free, Air‐Stable All‐Inorganic Cesium Bismuth Halide Perovskite Nanocrystals
Dalian Institute of Chemical Physics · University of Chinese Academy of Sciences · +2 more institutions
Abstract
Abstract Lead‐based perovskite nanocrystals (NCs) have outstanding optical properties and cheap synthesis conferring them a tremendous potential in the field of optoelectronic devices. However, two critical problems are still unresolved and hindering their commercial applications: one is the fact of being lead‐based and the other is the poor stability. Lead‐free all‐inorganic perovskite Cs 3 Bi 2 X 9 (X=Cl, Br, I) NCs are synthesized with emission wavelength ranging from 400 to 560 nm synthesized by a facile room temperature reaction. The ligand‐free Cs 3 Bi 2 Br 9 NCs exhibit blue emission with photoluminescence quantum efficiency (PLQE) about 0.2 %. The PLQE can be increased to 4.5 % when extra surfactant…
Citation impact
- FWCI
- 33.61
- Percentile
- 100%
- References
- 39
Authors
10- BYBin Yang
Dalian Institute of Chemical Physics, University of Chinese Academy of Sciences, State Key Laboratory of Molecular Reaction Dynamics
- JCJunsheng Chen
Dalian Institute of Chemical Physics, Lund University, State Key Laboratory of Molecular Reaction Dynamics
- FHFeng Hong
Dalian Institute of Chemical Physics, University of Chinese Academy of Sciences, State Key Laboratory of Molecular Reaction Dynamics
- XMXin Mao
Dalian Institute of Chemical Physics, University of Chinese Academy of Sciences, State Key Laboratory of Molecular Reaction Dynamics
- KZKaibo Zheng
Lund University
Topics & keywords
- Halide
- Perovskite (structure)
- Nanocrystal
- Passivation
- Photoluminescence
- Bismuth
- Materials science
- Caesium