Facile Synthesis and Optical Properties of CsPbX3/ZIF-8 Composites for Wide-Color-Gamut Display

• Published in: Nanomaterials (Basel, Switzerland) Vol. 9; no. 6; p. 832
• Main Authors: Mei, Shiliang, Yang, Bobo, Wei, Xian, Dai, Hanqing, Chen, Zhihao, Cui, Zhongjie, Zhang, Guilin, Xie, Fengxian, Zhang, Wanlu, Guo, Ruiqian
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 31.05.2019; MDPI
• Subjects: all-inorganic; Atmospheric conditions; Color; composite; Composite materials; Crystal structure; Fourier transforms; Light emitting diodes; Metal-organic frameworks; Nanocrystals; Optical properties; perovskite quantum dots; Perovskites; Photoluminescence; Photons; Quantum dots; Spectrum analysis; Stability; White light; wide-color-gamut display; Zeolites; ZIF-8; China
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano9060832

All-inorganic CsPbX3 (X = Cl, Br, and I) perovskite quantum dots (QDs), an emerging type of luminescent materials, have drawn extensive attention in recent years. However, the amelioration of their stability is becoming a critical issue. Herein, we present a facile and efficient approach to prepare novel perovskite QDs/metal–organic frameworks (CsPbX3/ZIF-8) composites under ambient-atmospheric conditions. The obtained composites exhibit better properties including high photoluminescence (PL) quantum yields (QYs) (41.2% for green and 34.8% for red), narrow-band emission (20 nm for green and 31 nm for red), and enhanced stability in comparison to bare QDs. Furthermore, their application in a remote-type white-light-emitting device was explored and a wide color gamut (~137% of the National Television System Committee standard) was achieved, verifying that these novel luminescent composites have great prospect in backlight display application.