We report a facile aqueous phase synthesis for prepar-ing water-soluble inverted core/shell ZnSe/CdSe semiconductor nanocrystals. The samples were characterized by X-ray diffraction (XRD),transmission electron microscopy (TEM),and their optical properties were investigated by using UV-vis-NIR spectropho-tometer and fluorescence spectrophotometer. The results indicate that the synthesized ZnSe/CdSe nanocrystals are inverted core/shell structure with diameter of about 5 nm. Furthermore,their absorption band-edge is red-shifted with the growth of CdSe shell; correspondingly,their emission wavelength can be tuned from 460 nm to 604 nm.
ZHOU Jing, JIANG Luwen, GUO Wen, JIANG Hai, HAO Zhonghua School of Physics and Technology, Wuhan University/Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan 430072, Hubei, China
