MAPbBr3nanocrystals from aqueous solution for poly(methyl methacrylate)-MAPbBr3nanocrystal films with compression-resistant photoluminescence

Xiaobing Tang; Yulin Zhang; Nadeesha Lakmali Kothalawala; Xiyu Wen; Doo Young Kim; Fuqian Yang

doi:10.1088/1361-6528/ac59e8

MAPbBr₃nanocrystals from aqueous solution for poly(methyl methacrylate)-MAPbBr₃nanocrystal films with compression-resistant photoluminescence

Nanotechnology. 2022 Mar 17;33(23). doi: 10.1088/1361-6528/ac59e8.

Authors

Xiaobing Tang¹, Yulin Zhang¹, Nadeesha Lakmali Kothalawala², Xiyu Wen³, Doo Young Kim², Fuqian Yang¹

Affiliations

¹ Materials Program, Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506, United States of America.
² Department of Chemistry, University of Kentucky, Lexington, KY 40506, United States of America.
³ Center for Aluminum Technology, University of Kentucky, Lexington, KY 40506, United States of America.

PMID: 35235922
DOI: 10.1088/1361-6528/ac59e8

Abstract

In this work, we develop an environmental-friendly approach to produce organic-inorganic hybrid MAPbBr₃(MA = CH₃NH₃) perovskite nanocrystals (PeNCs) and PMMA-MAPbBr₃NC films with excellent compression-resistant PL characteristics. Deionized water is used as the solvent to synthesize MAPbBr₃powder instead of conventionally-used hazardous organic solvents. The MAPbBr₃PeNCs derived from the MAPbBr₃powder exhibit a high photoluminescence quantum yield (PLQY) of 93.86%. Poly(methyl methacrylate) (PMMA)-MAPbBr₃NC films made from the MAPbBr₃PeNCs retain ∼97% and ∼91% of initial PL intensity after 720 h aging in ambient environment at 50 °C and 70 °C, respectively. The PMMA-MAPbBr₃NC films also exhibit compression-resistant photoluminescent characteristics in contrast to the PMMA-CsPbBr₃NC films under a compressive stress of 1.6 MPa. The PMMA-MAPbBr₃NC film integrated with a red emissive film and a blue light emitting source achieves an LCD backlight of ∼114% color gamut of National Television System Committee (NTSC) 1953 standard.

Keywords: compression-resistant backlight films; deionized water; display; organic-inorganic hybrid perovskite nanocrystals.