Enhanced Photoluminescence and Reduced Dimensionality via Vacancy Ordering in a 10H Halide Perovskite.
Enhanced Photoluminescence and Reduced Dimensionality via Vacancy Ordering in a 10H Halide Perovskite.
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DOI：
10.1021/acs.inorgchem.2c04433
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发表时间：
2023-02-27
影响因子：
4.6
通讯作者：
Morrison, Finlay D.
中科院分区：
文献类型：
--
作者：
Liu, Hang;Hafeez, Hassan;Cordes, David B.;Slawin, Alexandra M. Z.;Peters, Gavin;Lee, Stephen L.;Samuel, Ifor D. W.;Morrison, Finlay D.
空位有序卤化物钙钛矿材料在光电子学方面的应用引起了人们的极大兴趣。在这项工作中，我们报道了新型无机卤化物Cs10MnSb6Cl30，它具有独特的10H(10层六方)钙钛矿多型结构，具有(Hcccc)2堆积。Cs10MnSb6Cl30在角位置和面位置都有30%的B位空位，导致[MnSb6Cl30]10-n柱，即八面体连接性减少到1D。与以前报道的具有2D连接性的25%空位有序的3C多型Cs4MnSb2Cl12相比，这导致了增强的光致发光。这不仅证明了10H钙钛矿结构在卤化物中的存在，而且也证明了B位缺陷的程度和堆积序列的变化是通过空位重排来调整钙钛矿多型的光学性质的方向。化合物Cs10MnSb6Cl30是一种新型的空位有序的卤化物钙钛矿，具有10H多型结构和(Hcccc)2堆积结构。B位的空位在面共享和角共享位置上都有序，使八面体连接性降低到一维，导致与相关的二维成分相比，光致发光增强。
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. The compound Cs10MnSb6Cl30 is a novel vacancy-ordered halide perovskite with a 10H polytype structure and (hcccc)2 stacking. The B-site vacancies order on both face- and corner-sharing sites reducing the octahedral connectivity to 1D, resulting in enhanced photoluminescence compared to related 2D compositions.
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DOI：
10.1107/s0567740874004316
发表时间：
1974-01-01
期刊：
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE
影响因子：
--
作者：
KIHARA, K;SUDO, T
通讯作者：
SUDO, T
影响因子：
4.6
作者：
Kim, Sun Woo;Zhang, Ronghuan;Hayward, Michael A.
通讯作者：
Hayward, Michael A.
无铅钙钛矿中的异步光激发电子和结构弛豫
影响因子：
15
作者：
Liu, Cunming;Wang, Yingqi;Zhang, Xiaoyi
通讯作者：
Zhang, Xiaoyi
影响因子：
3.8
作者：
Pradhan, Abinash;Sahoo, Subash Chandra;Samal, Saroj L.
通讯作者：
Samal, Saroj L.
影响因子：
3
作者：
Pramod, Ashna K.;Subramaniam, Mohan Raj;Batabyal, Sudip K.
通讯作者：
Batabyal, Sudip K.