Epitaxial Heterostructures of CsPbBr3 Perovskite Nanocrystals with Post-transition Metal Bismuth

Patra, A and Jagadish, K and Ravishankar, N and Pradhan, N (2024) Epitaxial Heterostructures of CsPbBr3 Perovskite Nanocrystals with Post-transition Metal Bismuth. In: Nano Letters, 24 (5). pp. 1710-1716.

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Abstract

The facet chemistry of halide perovskite nanocrystals plays a key role in designing nanoscale epitaxial heterostructures. However, despite significant successes achieved in designing these nanocrystals, their heterostructures with several leading transition metals could not be established yet. Herein, the possible heterostructures of metals beyond transition metals are explored and the epitaxial combinations of soft CsPbBr3 nanocrystals with the post-transition metal Bi(0) are reported. These heterostructures are built with interfacing facets having hexagonal atomic configurations of both the rhombicuboctahedron CsPbBr3 and octahedral Bi(0). A high reaction temperature and the presence of alkylamine kept Bi(III) in reduced form and helped in sustaining these CsPbBr3-Bi(0) heteronanocrystals. Since understanding of and synthesis optimization of metal-halide perovskite heterostructures are limited, this finding adds a new fundamental insight in designing ionic and nonionic materials heterojunctions. Furthermore, oxidation and sulfidation of Bi(0) are studied, and the possible oxide/sulfide heterostructures with CsPbBr3 are discussed. © 2024 American Chemical Society.

Item Type:	Journal Article
Publication:	Nano Letters
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to the American Chemical Society.
Keywords:	Bismuth compounds; Bromine compounds; Heterojunctions; Lead compounds; Metal halides; Perovskite; Transition metals, Alkylamine; Atomic configuration; Cspbbr3�bi; Epitaxial heterostructure; Halide perovskite nanocrystal; Halide perovskites; Heteronanocrystals; High-reaction temperatures; Metal cans; Nano scale, Nanocrystals, aliphatic amine; bismuth; halide; nanocrystal; perovskite; perovskite nanocrystal; sulfide; transition element, article; controlled study; ionization; oxidation; pharmaceutics; reaction temperature; synthesis
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	09 Apr 2024 10:01
Last Modified:	09 Apr 2024 10:01
URI:	https://eprints.iisc.ac.in/id/eprint/84692

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