Cesium manganese halide perovskite-analogue nanocrystals with highly efficient energy conversion for flexible multifunctional fibers
Journal
Inorganic Chemistry Frontiers
Journal Volume
10
Journal Issue
4
Pages
1338
Date Issued
2023-01-11
Author(s)
Duan, Xiuqiang
Nie, Kun
Wang, Xuyi
Zhou, Ranran
Hu, Ziyao
Yan, Junbao
Mei, Lefu
Ma, Xiaoxue
Yao, Songjun
Wang, Luoxin
Wang, Hua
Abstract
In recent years, all-inorganic perovskite materials have been considered and applied in various fields. In this work, we used an improved method to synthesize novel zero-dimensional (0D) lead-free Cs2Mn(Cl/Br)4·2H2O perovskite-analogue nanocrystals (PA NCs) under aerobic conditions. At the same time, lead (Pb) was introduced into manganese (Mn) halide perovskite-analogue nanocrystals of Cs2Mn(Cl/Br)4·2H2O via a hot-injection method. The PA NCs shows an intense orange light under a UV lamp. The fluorescence spectrum peak center of the PA NCs is located at around 598 nm, and the photoluminescence quantum yield (PLQY) is 41.12%. The PLQY of the original PA NCs was almost nonexistent at around 598 nm. The increase in PLQY was due to the replacement of Mn2+ with Pb2+, which effectively promotes the transfer of excitation energy to Mn2+. The Pb2+-doped Cs2Mn(Cl/Br)4·2H2O PA NCs also exhibit excellent stability and strong PL. We also applied the PA NCs to composite paper. The properties described in this study provide new design ideas and directions for potential optronic devices.
Type
journal article