MAPbBr3 nanocrystals from aqueous solution for poly(methyl methacrylate)-MAPbBr3 nanocrystal films with compression-resistant photoluminescence. (4th June 2022)

• Record Type: Journal Article
• Authors: Tang, Xiaobing; Zhang, Yulin; Kothalawala, Nadeesha Lakmali; Wen, Xiyu; Kim, Doo Young; Yang, Fuqian
• Is Part Of: Nanotechnology. Volume 33:Number 23(2022)
• Publication Date: 2022-06-04
• Subjects: organic-inorganic hybrid perovskite nanocrystals -- deionized water -- compression-resistant backlight films -- display; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ac59e8
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: In this work, we develop an environmental-friendly approach to produce organic-inorganic hybrid MAPbBr3 (MA = CH3 NH3 ) perovskite nanocrystals (PeNCs) and PMMA-MAPbBr3 NC films with excellent compression-resistant PL characteristics. Deionized water is used as the solvent to synthesize MAPbBr3 powder instead of conventionally-used hazardous organic solvents. The MAPbBr3 PeNCs derived from the MAPbBr3 powder exhibit a high photoluminescence quantum yield (PLQY) of 93.86%. Poly(methyl methacrylate) (PMMA)-MAPbBr3 NC films made from the MAPbBr3 PeNCs retain ∼97% and ∼91% of initial PL intensity after 720 h aging in ambient environment at 50 °C and 70 °C, respectively. The PMMA-MAPbBr3 NC films also exhibit compression-resistant photoluminescent characteristics in contrast to the PMMA-CsPbBr3 NC films under a compressive stress of 1.6 MPa. The PMMA-MAPbBr3 NC 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.