Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Simple Fabrication of Green Emission and Water-Resistant CsPbBr3 Encapsulation Using Commercial Glass Frits

상업용 유리프릿의 소결 공정을 이용한 내수성을 갖는 CsPbBr3/Glass 세라믹 복합체의 제작

  • Mun, Na-eun (Department of Applied Chemistry and Food Science Technology, Dong-Eui University) ;
  • Kim, Sunghoon (Department of Applied Chemistry and Food Science Technology, Dong-Eui University)
  • 문나은 (동의대학교 공과대학 응용화학과) ;
  • 김성훈 (동의대학교 공과대학 응용화학과)
  • Received : 2021.01.02
  • Accepted : 2021.01.08
  • Published : 2021.01.27
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Abstract

In this work, narrow-band green-emitting CsPbBr3 particles are embedded in commercialized glass composites by a facile dry process. By optimizing the method through sintering in glass frit (GF) composites including CsBr and PbBr2, used as precursors, the encapsulation of CsPbBr3 particles made them waterproof with green fluorescence. To improve the fluorescent properties by reducing aggregation of CsPbBr3, fumed silica (FS) is additionally used to help particles avoid bulking up in the glass matrix. The CsPbBr3 perovskite/glass composites are characterized using scanning electron microscopy (SEM) images and energy-dispersive X-ray spectroscopy (EDS) maps, which support the existence of CsPbBr3 particles in the glass matrix. The photoluminescence (PL) properties demonstrate that the emission spectrum peak, full width at half maximum (FWHM), and photoluminescence quantum yield (PLQY) values are 519 nm, 17 nm, and 17.7 %. We also confirm the water-resistant properties. To enhance water/moisture stability, the composite sample is put directly into water, with its PLQY monitored periodically under UV light.

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