Broad Photoluminescence and Second-Harmonic Generation in the Noncentrosymmetric Organic–Inorganic Hybrid Halide (C<sub>6</sub>H<sub>5</sub>(CH<sub>2</sub>)<sub>4</sub>NH<sub>3</sub>)<sub>4</sub>MX<sub>7</sub>·H<sub>2</sub>O (M = Bi, In, X = Br or I)
作者:Da Chen、Shiqiang Hao、Liubing Fan、Yangwu Guo、Jiyong Yao、Christopher Wolverton、Mercouri G. Kanatzidis、Jing Zhao、Quanlin Liu
DOI:10.1021/acs.chemmater.1c02896
日期:2021.10.26
times that of KH2PO4, respectively. The large SHG responses are attributed to the synergistic contribution of the octahedral distortion of [MX6]3– (M = Bi, In, X = Br, I) and the ordered arrangement of the benzene ring-containing organic cation PBA+. Upon ultraviolet and visible-light excitations at room temperature, (PBA)4BiBr7·H2O, (PBA)4BiI7·H2O, and (PBA)4InBr7·H2O exhibit broad red-light luminescence
有机-无机金属卤化物的最新发现揭示了优异的半导体和极化特性。在此,我们报告了三种有机-无机金属卤化物,(PBA) 4 BiBr 7 ·H 2 O、(PBA) 4 BiI 7 ·H 2 O 和 (PBA) 4 InBr 7 ·H 2 O [(PBA) + = C 6 H 5 (CH 2 ) 4 NH 3 + ],带隙分别为~3.52、~2.29和~4.05 eV。它们具有包含无机八面体 [MX 6 ] 3– 的零维结构(M = Bi, In, X = Br, I) 和未结合的 X –离子并在C 2 空间群中结晶。(PBA) 4 BiI 7 ·H 2 O 在红外区域显示二次谐波(SHG)响应,大约是 AgGaS 2 的1.3 倍;(PBA) 4 BiBr 7 ·H 2 O 和 (PBA) 4 InBr 7 ·H 2 O 在紫外区显示出 SHG 响应,分别约为 KH 2 PO 4 的0.4 和 0