Synthesis of CdSe, ZnSe, and ZnxCd1-xSe nanocrystals and their silica sheathed core/shell structures.
Uniform ZnxCd1-xSe nanocrystals have been prepared at the artificially designed water-oil interface using Na2SeO3, Cd(NO3)2, and Zn(NO3)2 as precursors. The chemical composition and band gap of the ZnxCd1-xSe nanocrystals can be adjusted via different combinations of source material. The coating of a SiO2 shell could transform the hydrophobic particles into hydrophilic particles. An advantage of this method is that a water phase could be added to the oleic acid (OLEA) synthesis system, which could be extended to make the synthesis of various nanocrystals more simple and flexible.
Ge
Jian-Ping
JP
Department of Chemistry and the Key Laboratory of Atomic & Molecular Nanosciences, Tsinghua University, Beijing 100084, P. R. China.
Xu
Sheng
S
Zhuang
Jing
J
Wang
Xun
X
Peng
Qing
Q
Li
Ya-Dong
YD