From Nonluminescent Cs4PbX6 (X = Cl, Br, I) Nanocrystals to Highly Luminescent CsPbX3 Nanocrystals: Water-Triggered Transformation through a CsX-Stripping Mechanism
作者： Linzhong Wu , Huicheng Hu , Yong Xu , Shu Jiang , Min Chen
DOI: 10.1021/ACS.NANOLETT.7B02896
关键词: Photochemistry 、 Phase (matter) 、 Luminescence 、 Chemistry 、 Photoluminescence 、 Quantum yield 、 Stripping (chemistry) 、 Halide 、 Ionic bonding 、 Nanocrystal
摘要: We report a novel CsX-stripping mechanism that enables the efficient chemical transformation of nonluminescent Cs4PbX6 (X = Cl, Br, I) nanocrystals (NCs) to highly luminescent CsPbX3 NCs. During transformation, NCs dispersed in nonpolar solvent are converted into by stripping CsX through an interfacial reaction with water different phase. This process takes advantage high solubility as well ionic nature and ion diffusion property NCs, produces monodisperse air-stable controllable halide composition, tunable emission wavelength covering full visible range, narrow width, photoluminescent quantum yield (up 75%). An additional is this clean synthesis phase while byproduct formed could be easily separated from organic The as-prepared show enhanced stability a...
acs.org
harvard.edu
sci-hub.se 参考文章(31)
Yue Wang, Xiaoming Li, Jizhong Song, Lian Xiao, Haibo Zeng, Handong Sun, All-Inorganic Colloidal Perovskite Quantum Dots: A New Class of Lasing Materials with Favorable Characteristics Advanced Materials. ,vol. 27, pp. 7101- 7108 ,(2015) , 10.1002/ADMA.201503573
Jizhong Song, Jianhai Li, Xiaoming Li, Leimeng Xu, Yuhui Dong, Haibo Zeng, Quantum Dot Light-Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX3) Advanced Materials. ,vol. 27, pp. 7162- 7167 ,(2015) , 10.1002/ADMA.201502567
Loredana Protesescu, Sergii Yakunin, Maryna I. Bodnarchuk, Franziska Krieg, Riccarda Caputo, Christopher H. Hendon, Ruo Xi Yang, Aron Walsh, Maksym V. Kovalenko, Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut Nano Letters. ,vol. 15, pp. 3692- 3696 ,(2015) , 10.1021/NL5048779
Yadong Yin, Can Erdonmez, Shaul Aloni, A. Paul Alivisatos, Faceting of nanocrystals during chemical transformation: from solid silver spheres to hollow gold octahedra. Journal of the American Chemical Society. ,vol. 128, pp. 12671- 12673 ,(2006) , 10.1021/JA0646038
Jun Xu, Chun-Sing Lee, Yong-Bing Tang, Xue Chen, Zhen-Hua Chen, Wen-Jun Zhang, Shuit-Tong Lee, Weixin Zhang, Zeheng Yang, Large-scale synthesis and phase transformation of CuSe, CuInSe2, and CuInSe2/CuInS2 core/shell nanowire bundles. ACS Nano. ,vol. 4, pp. 1845- 1850 ,(2010) , 10.1021/NN9013627
Yiding Liu, James Goebl, Yadong Yin, Templated synthesis of nanostructured materials Chemical Society Reviews. ,vol. 42, pp. 2610- 2653 ,(2013) , 10.1039/C2CS35369E
Z. R. Dai, Shouheng Sun, Z. L. Wang, Phase Transformation, Coalescence, and Twinning of Monodisperse FePt Nanocrystals Nano Letters. ,vol. 1, pp. 443- 447 ,(2001) , 10.1021/NL0100421
Sergii Yakunin, Loredana Protesescu, Franziska Krieg, Maryna I. Bodnarchuk, Georgian Nedelcu, Markus Humer, Gabriele De Luca, Manfred Fiebig, Wolfgang Heiss, Maksym V. Kovalenko, Low-threshold amplified spontaneous emission and lasing from colloidal nanocrystals of caesium lead halide perovskites Nature Communications. ,vol. 6, pp. 8056- 8056 ,(2015) , 10.1038/NCOMMS9056
Shibin Sun, Dan Yuan, Yuan Xu, Aifei Wang, Zhengtao Deng, Ligand-Mediated Synthesis of Shape-Controlled Cesium Lead Halide Perovskite Nanocrystals via Reprecipitation Process at Room Temperature ACS Nano. ,vol. 10, pp. 3648- 3657 ,(2016) , 10.1021/ACSNANO.5B08193
Xiaoming Li, Ye Wu, Shengli Zhang, Bo Cai, Yu Gu, Jizhong Song, Haibo Zeng, CsPbX3 Quantum Dots for Lighting and Displays: Room-Temperature Synthesis, Photoluminescence Superiorities, Underlying Origins and White Light-Emitting Diodes Advanced Functional Materials. ,vol. 26, pp. 2435- 2445 ,(2016) , 10.1002/ADFM.201600109