title: Synthesis of blue fluorescence CdS quantum dots stabilized by L-cysteine in aqueous phase.
abstract: In this paper we report a novel synthesis method of blue fluorescence CdS quantum dots stabilized by L-cysteine in aqueous phase. When pH value of the core/shell CdTe/CdS colloid solution changed from 11.6 to 1.5, blue fluorescence CdS QDs was obtained. The fluorescence emission wavelength yielded a hypsochromic shift from 540 nm to 438 nm corresponding to the absorption peak position gave a hypsochromic shift from 518 nm to 352 nm. The CdS QDs were characterized by XPS and TEM. And the photostability of CdS QDs solution irradiated with UV lamp under open air condition at room temperature was very stable.
authors: College of Material Science and Engineering, Huaqiao University, Quanzhou 362021, China.
authors: Sun
authors: S
authors: Xiang-Ying
authors: Liu
authors: L
authors: Bin
authors: Liu
authors: L
authors: Hui
authors: Yang
authors: Y
authors: Yan-Hua