两种超原子基立方钙钛矿的合成、结构和表征

IF 3.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Cluster Science Pub Date : 2025-08-29 DOI:10.1007/s10876-025-02896-x

Yan Liu, Ruibing Wang, Wei Zhang, Yu Zhong, Changyan Yu, Yanhua Li

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引用次数: 0

摘要

在过量硫作为矿化剂存在的情况下，采用溶剂热法合成了两种新的钙钛矿型化合物Na4Cu8Sn3S12(1)和K4Cu8Sn3S12(2)。两种化合物是同构的，在立方空间基团Fm \(\:\stackrel{-}{3}\) c中结晶，具有相同的阴离子框架[Cu8Sn3S12]n4n−。与钙钛矿CaTiO3相比，Ti⁴⁺同时被[Cu₈]⁸⁺取代，O²⁻被[SnS₄]⁴⁻取代，Ca²⁺被四个碱金属阳离子取代。上述化合物均为窄带半导体，化合物1的带隙为2.01 eV，化合物2的带隙为2.25 eV，化合物1具有良好的光电响应性能。图形摘要

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Syntheses, Structures, and Characterizations of Two Superatom-Based Cubic Perovskites

Two new perovskite-type compounds, Na₄Cu₈Sn₃S₁₂ (1) and K₄Cu₈Sn₃S₁₂ (2) were synthesized by a solvothermal method in the existence of excess sulfur as a mineralizer. Two compounds are isostructural and crystallize in cubic space group Fm\(\:\stackrel{-}{3}\)c and feature the same anion framework [Cu₈Sn₃S₁₂]_n⁴ⁿ⁻. Compared with perovskite CaTiO₃, the Ti⁴⁺ ions are simultaneously substituted by [Cu₈]⁸⁺ unit, the O²⁻ ions by [SnS₄]⁴⁻ unit, and the Ca²⁺ ions by four alkali metal cations. The above compounds are narrow-band semiconductors with the band gaps of 2.01 eV for compound 1, and 2.25 eV for 2, and compound 1 exhibits good photoelectric response performance.

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来源期刊

Journal of Cluster Science 化学-无机化学与核化学

CiteScore

6.70

自引率

0.00%

发文量

166

审稿时长

3 months

期刊介绍： The journal publishes the following types of papers: (a) original and important research; (b) authoritative comprehensive reviews or short overviews of topics of current interest; (c) brief but urgent communications on new significant research; and (d) commentaries intended to foster the exchange of innovative or provocative ideas, and to encourage dialogue, amongst researchers working in different cluster disciplines.