文献类型：期刊文献

英文题名：Moisture-Resistant Chiral Perovskites for White-Light Circularly Polarized Photoluminescence

作者：Peng, Yu[1];Wang, Xing[1];Li, Lina[2];Ye, Huang[2];Yang, Shuang[1];Yang, Hua Gui[1];Luo, Junhua[2];Hou, Yu[1,3]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Shanghai Engn Res Ctr Hierarch Nanomat,Sch Mat Sc, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, State Key Lab Struct Chem, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China;[3]East China Univ Sci & Technol, Shenzhen Res Inst, Shenzhen 518057, Peoples R China

年份：2023

卷号：11

期号：1

外文期刊名：ADVANCED OPTICAL MATERIALS

收录：;EI(收录号：20224613095772);WOS:【SCI-EXPANDED(收录号:WOS:000879287900001)】；

基金：This work was financially supported by the Science and Technology Commission of Shanghai Municipality (22YF1410000), China Postdoctoral Science Foundation (2021M701190), National Natural Science Foundation of China (52203330, 51972111, and 51902185), the National Ten Thousand Talent Program for Young Top-notch Talent, National Natural Science Fund for Excellent Young Scholars (52022030), National Natural Science Fund for Distinguished Young Scholars (51725201), International (Regional) Cooperation and Exchange Projects of the National Natural Science Foundation of China (51920105003), Innovation Program of Shanghai Municipal Education Commission (E00014), the Fundamental Research Funds for the Central Universities (JKM01221621), the Fundamental Research Funds of Free Exploration of Science, Technology and Innovation Commission of Shenzhen Municipality (2021Szvup039), Shanghai Municipal Natural Science Foundation (22ZR1418000), and Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400).

语种：英文

外文关键词：broadband emission; chiral perovskites; circularly polarized photoluminescence; low-dimensional materials; moisture resistance; organic-inorganic metal halides

摘要：Circularly polarized luminescence (CPL) has recently caught increasing attention owing to its widespread applications from 3D display to quantum-based optical computation. Among various CPL-active materials, low-dimensional hybrid perovskites have risen to prominence, benefiting from their excellent structural flexibility and optoelectronic properties. However, the exploration of hybrid perovskites with white-CPL remains a challenge and most of them suffer from moisture instability. Here, a pair of moisture-resistant 1D hybrid perovskites, (R-C5H14N2)PbBr4 center dot H2O (1R) and (S-C5H14N2)PbBr4 center dot H2O (2S), are reported in which [PbBr42-](infinity) double chains are surrounded by chiral cations and water molecules forming the bulk assembled quantum-helix structures. The strong quantum confinement in these unique structures facilitates exciton self-trapping, which further synergizes the effect of chiral cations, endowing 1R and 2S with opposite broadband yellowish white-CPL with a luminescence dissymmetry factor (g(lum)) of 1.8 x 10(-3) and a color rendering index up to 81. Notably, the dehydrated 1R can be recovered in humid air (60% relative humidity) within a few minutes via reabsorption of water molecules, exhibiting excellent moisture resistance, which is much better than most reported hybrid perovskites. A new path is paved here to further exploration of moisture-resistant CPL-active materials for multifunctional applications.