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Dong S, Hu ZY, Wei P, Han J, Wang Z, Liu J, Su BL, Zhao D, Liu Y. All-Inorganic Perovskite Single-Crystal Photoelectric Anisotropy. Adv Mater 2022; 34:e2204342. [PMID: 35891614 DOI: 10.1002/adma.202204342] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Engineering surface structure can precisely and effectively tune the optoelectronic properties of halide perovskites, but are incredibly challenging. Herein, the design and fabrication of uniform all-inorganic CsPbBr3 cubic/tetrahedral single-crystals are reported with precise control of the (100) and (111) surface anisotropy, respectively. By combining with theoretical calculations, it is demonstrated that the preferred (100) surface engineering of the CsPbBr3 single-crystals enables a lowest surface bandgap energy (2.33 eV) and high-rate carrier mobility up to 241 μm2 V-1 s-1 , inherently boosting their light-harvesting and carrier-transport capability. Meanwhile, the polar (111) surface induces ≈0.16 eV upward surface-band bending and ultrahigh surface defect density of 1.49 × 1015 cm-3 , which is beneficial for enhancing surface-defects-catalyzed reactions. The work highlights the anisotropic surface engineering for boosting perovskite optoelectronic devices and beyond.
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Affiliation(s)
- Shunhong Dong
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Zhi-Yi Hu
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Ping Wei
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Jingru Han
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Zhao Wang
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Jing Liu
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Bao-Lian Su
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
- Laboratory of Inorganic Materials Chemistry, Department of Chemistry, University of Namur, 61 rue de Bruxelles, Namur, B-5000, Belgium
| | - Dongyuan Zhao
- Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China
| | - Yong Liu
- International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
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