Optical properties of CsPbBr3 quantum dots in PMMA matrix

Xudong Zhao; Wenlong Ma; Xianghua Wang

doi:10.1117/12.2686941

6 August 2023 Optical properties of CsPbBr₃ quantum dots in PMMA matrix

Xudong Zhao, Wenlong Ma, Xianghua Wang

Proceedings Volume 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023); 1278118 (2023) https://doi.org/10.1117/12.2686941
Event: 2023 International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 2023, Guangzhou, JS, China

Abstract

The composite film of polymer and CsPbBr₃ perovskite quantum dots can effectively improve the photo stability and water stability of perovskite materials. In this study, CsPbBr₃ quantum dots were prepared by hot injection method. After ligand exchange treatment with 3-aminopropyl trimethoxy-silane (APMTS), high quality quantum dots were prepared. Further, the quantum dots were compounded in polymethyl methacrylate (PMMA) to prepare high quality optical films, and the optical stability under UV excitation conditions was studied. The optical properties of toluene dispersion and PMMA composite films were characterized by fluorescence spectrometer, ultraviolet spectrophotometer and spectrophotometric luminance meter. According to the red shift of fluorescence peaks of composite films with different volume ratios, combined with the dependence of Förster resonance energy transfer (FRET) on quantum dot spacing, it is proved that the FRET effect of quantum dot films can be effectively inhibited by reducing the volume fraction of quantum dots, thus improving the optical properties of the films.

Citation Download Citation

Xudong Zhao, Wenlong Ma, and Xianghua Wang "Optical properties of CsPbBr₃ quantum dots in PMMA matrix", Proc. SPIE 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 1278118 (6 August 2023); https://doi.org/10.1117/12.2686941

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KEYWORDS

Quantum dots

Polymethylmethacrylate

Fluorescence resonance energy transfer

Perovskite

Ultraviolet radiation

Optical properties

Polymers

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