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Enhanced Photoluminescence and Reduced Dimensionality via Vacancy Ordering in a 10H Halide Perovskite.

ABSTRACT: Vacancy-ordered halide perovskites have received great interest in optoelectronic applications. In this work, we report the novel inorganic halide Cs₁₀MnSb₆Cl₃₀ with a distinctive 10H (10-layer hexagonal) perovskite polytype structure with (hcccc)₂ stacking. Cs₁₀MnSb₆Cl₃₀ has 30% B-site vacancies ordered at both corner- and face-sharing sites, resulting in [MnSb₆Cl₃₀]^10-_n columns, i.e., a reduction of octahedral connectivity to 1D. This results in enhanced photoluminescence in comparison to the previously reported 25% vacancy-ordered 3C polytype Cs₄MnSb₂Cl₁₂ with 2D connectivity. This demonstrates not only the existence of the 10H perovskite structure in halides but also demonstrates the degree of B-site deficiency and stacking sequence variation as a direction to tune the optical properties of perovskite polytypes via vacancy rearrangements.

SUBMITTER: Liu H

PROVIDER: S-EPMC9976281 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Enhanced Photoluminescence and Reduced Dimensionality via Vacancy Ordering in a 10H Halide Perovskite.

Liu Hang H Hafeez Hassan H Cordes David B DB Slawin Alexandra M Z AMZ Peters Gavin G Lee Stephen L SL Samuel Ifor D W IDW Morrison Finlay D FD

Inorganic chemistry 20230213 8

Vacancy-ordered halide perovskites have received great interest in optoelectronic applications. In this work, we report the novel inorganic halide Cs10MnSb6Cl30 with a distinctive 10H (10-layer hexagonal) perovskite polytype structure with (hcccc)2 stacking. Cs10MnSb6Cl30 has 30% B-site vacancies ordered at both corner- and face-sharing sites, resulting in [MnSb6Cl30]10-n</ ...[more]

PMID: 36780272

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