Hybrid Organic Lead Iodides: Role of Organic Cation Structure in Obtaining 1D Chains of Face-Sharing Octahedra vs 2D Perovskites
作者:Marie-Hélène Tremblay、Allyson Boyington、Sergei Rigin、Jie Jiang、John Bacsa、Khaled Al Kurdi、Victor N. Khrustalev、Ruth Pachter、Tatiana V. Timofeeva、Nathan Jui、Stephen Barlow、Seth R. Marder
DOI:10.1021/acs.chemmater.1c01642
日期:2022.2.8
new hybrid organic lead iodide crystal structures, 11 of which are FSLICs, are reported. The FSLIC structures can be further categorized according to the arrangement of neighboring wires. The optical properties of these materials are largely insensitive to the identity of the organic cations and to the resulting structural details. However, there is a correlation between the exciton energy and the pattern
((R(CH 2 ) n NH 3 +阳离子 (R = 芳基,取代的环己基;n = 1, 2) 可以形成混合碘化铅,包括式 [R(CH 2 ) n NH 3 ] 2的二维层状钙钛矿PbI 4和一维结构,由一维共面 PbI 6八面体线组成,分子式为 [R(CH 2 ) n NH 3 ]PbI 3(面部共享碘化铅链,FSLIC)。使用一系列这样的阳离子,我们发现当一个阳离子的铵部分与相同或另一个阳离子的氢键受体取代基之间可能存在氢键时,有利于形成一维 FSLIC。共报道了 16 种新的杂化有机碘化铅晶体结构,其中 11 种为 FSLIC。FSLIC 结构可以根据相邻导线的排列进行进一步分类。这些材料的光学性质在很大程度上对有机阳离子的身份和由此产生的结构细节不敏感。然而,激子能量与导线相对于彼此排列的图案之间存在相关性。