中国物理B ›› 2005, Vol. 14 ›› Issue (11): 2262-2268.doi: 10.1088/1009-1963/14/11/021
苗雁鸣, 李超荣, 曹立, 刘瑞斌, 何玉平, 解思深, 邹炳锁
Miao Yan-Ming (苗雁鸣), Li Chao-Rong (李超荣), Cao Li (曹立), Liu Rui-Bin (刘瑞斌), He Yu-Ping (何玉平), Xie Si-Shen (解思深), Zou Bing-Suo (邹炳锁)
摘要: In this article, mono-dispersed hexagonal structure CdSe nanocrystals with polyhedron shape were prepared by an open solvent thermal reaction. They show a discrete excitonic transition structure in the absorption spectra and the minimal photoluminescence (PL) peak full-width at half-maximum of 19\,nm. The PL quantum yield is about 60%. Transmission electron micrographs,high-resolution transmission electron micrographs, x-ray powder diffraction patterns, UV-vis absorption spectra and PL spectra were obtained for the as-prepared CdSe nanocrystals. The size of the CdSe nanocrystals can be tuned by changing the reaction temperature or time. Due to the improved synthesis method, a different growth mechanism of the CdSe nanocrystals is discussed.
中图分类号: (Nanocrystals, nanoparticles, and nanoclusters)