期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：310
期号：4
页码：1-7
DOI：10.1088/1755-1315/310/4/042050
出版社：IOP Publishing
摘要：Water-soluble Fe-doped ZnSe/ZnSe quantum dots (ZnSe: Fe/ZnSe QDs) were prepared through a facile, low-cost and effective strategy in aqueous solution using L-cysteine ( L-cys) as modifier. X-ray diffraction (XRD) studies showed that the prepared ZnSe: Fe/ZnSe QDs belonged to zinc blende crystal structures. Transmission electron microscopy (TEM) exhibited that the average diameter of ZnSe: Fe/ZnSe QDs was about 2.9 nm. Infrared spectrum (IR) exhibited that the L-cys has been successfully modified to QDs. The tests of Ultraviolet-visible (UV-vis) spectrum exhibited that the absorption edge position of ZnSe: Fe/ZnSe QDs had a sight red shift with the deposition of ZnSe shell. The fluorescence properties of obtained ZnSe: Fe/ZnSe QDs were investigated through photoluminescence (PL) spectrum. The results exhibited that the PL intensity of ZnSe: Fe/ZnSe QDs has been improved obviously compared with ZnSe: Fe QDs.
