化学
卤化物
光致发光
维数之咒
空位缺陷
钙钛矿(结构)
化学物理
结晶学
无机化学
光电子学
人工智能
物理
计算机科学
作者
Huan Liu,Hassan Hafeez,David B. Cordes,Alexandra M. Z. Slawin,Gavin Peters,Stephen Lee,Ifor D. W. Samuel,Finlay D. Morrison
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-02-13
卷期号:62 (8): 3629-3636
被引量:3
标识
DOI:10.1021/acs.inorgchem.2c04433
摘要
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.
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