Hao, Jiarui Qu, Xingyu Qiu, Lei Li, Guogang Wei, Yi Xing, Gongcheng Wang, Hongquan Yan, Chunjie Jang, Ho Seong Cheng, Ziyong Lin, Jun 2024-01-19T21:00:36Z 2024-01-19T21:00:36Z 2022-01-25 2019-02 2195-1071 https://pubs.kist.re.kr/handle/201004/120385 Currently, poor luminescence stability seriously impedes the practical application of inorganic halide perovskite (CsPbX3, X = Cl, Br, and I) quantum dots (QDs) in optoelectronic devices. In present work, CsPbX3 QDs are successfully assembled on natural mineral halloysite nanotubes (HNTs) for improving the luminescence performances. Monodispersed CsPbX3 QDs are arranged on two edges of HNTs in a highly ordered manner, which possibly originates from the electrostatic interaction between halogen ion and surface hydroxyl (Sur-OH2+) on the section face of HNTs. As expected, the photoluminescence (PL) performances of CsPbX3@HNTs nanocomposites are obviously improved. The PL intensity still can be maintained even 80% when working at 100 degrees C. Almost no emission degradation is observed after storing in an open ambient condition for 28 days. Moreover, the PL intensity also maintains 82% of room temperature (RT) intensity after continuously being illuminated by 365 nm UV lamps for 144 h. Excellent white light with Commission Internationale de l'Eclairage (CIE) chromaticity coordinates (0.34, 0.32) of the white light-emitting diodes (w-LEDs) fabricated by CsPbBr3@HNTs, CsPbBr1.2Cl1.8@HNTs, and CsPbBr1.2I1.8@HNTs phosphors are achieved. This work opens up a new insight in achieving stable CsPbX3 QD-based multifunctional materials by designing nanocomposites with natural clay mineral. English WILEY-V C H VERLAG GMBH One-Step Loading on Natural Mineral Halloysite Nanotube: An Effective Way to Enhance the Stability of Perovskite CsPbX3 (X = Cl, Br, I) Quantum Dots Article 10.1002/adom.201801323 1 ADVANCED OPTICAL MATERIALS, v.7, no.4 ADVANCED OPTICAL MATERIALS 7 4 N scie scopus 000459020300010 2-s2.0-85058235640 Materials Science, Multidisciplinary Optics Materials Science Optics Article HALIDE PEROVSKITES ROOM-TEMPERATURE NANOCRYSTALS EMISSION BRIGHT NANOCOMPOSITES CH3NH3PBBR3 HYBRID CsPbX3 environmental storage stability halloysite nanotubes perovskite quantum dots photostability thermal stability