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- Title
Interfacial‐Field‐Induced Increase of the Structural Phase Transition Temperature in Organic–Inorganic Perovskite Crystals Coated with ZnO Nanoshell.
- Authors
Zhao, Fenghuan; Gao, Xian; Fang, Xuan; Glinka, Yuri D.; Feng, Xiyuan; He, Zhubing; Wei, Zhipeng; Chen, Rui
- Abstract
Abstract: The hybrid organic–inorganic perovskites are known to exhibit a complex crystalline structure, which allows for the structural phase transitions among the orthorhombic, tetragonal, and cubic phases that occur at different temperatures. This behavior of the organic–inorganic perovskites can significantly alter their optoelectronic properties. Here, using photoluminescence spectroscopy, it is shown that the structural orthorhombic‐to‐tetragonal phase transition temperature in MAPbI3 perovskite crystal can be increased from 135 to 160 K upon coating with ZnO nanoshell. The phenomenon is attributed to the interfacial‐field‐induced atomic rearrangement in the near‐surface area. The findings shed light on the great importance of the interfacial electric field effect on the structural and optical properties of the organic–inorganic perovskites, which hold great promise for their potential applications in the structural‐phase‐controlled optoelectronic and photovoltaic devices.
- Subjects
ZINC oxide; PHASE transitions; ORTHORHOMBIC crystal system; PEROVSKITE crystallography; OPTOELECTRONIC devices
- Publication
Advanced Materials Interfaces, 2018, Vol 5, Issue 14, p1
- ISSN
2196-7350
- Publication type
Article
- DOI
10.1002/admi.201800301