Investigation of stability of optical characteristics of thin films based on perovskite nanocrystals CsPbBr3 and copolymer p(MMA-LMA)
Abstract
Despite the excellent optical characteristics of perovskite nanocrystals (PNCs) based on CsPbBr3, they have relatively low stability, which limits their application as materials for hybrid light-emitting diodes, single photon sources, solar cells and other optoelectronic devices, as well as X-ray and gamma-ray detectors. The present work demonstrates the results of experiments on composite thin films based on PNCs and copolymer of methyl- and lauryl methacrylate. The temporal dynamics of quantum yield and mean luminescence lifetime changes for thin film samples with different copolymer mass fractions relative to CsPbBr3-based PNCs have been investigated. It is shown that composite samples containing from 10 to 20 % of copolymer by mass have improved temporal stability of optical characteristics, which makes them promising for practical use in optoelectronic applications.