标题：Enhanced Oxidation Stability of Quasi Core-Shell Alloyed CdSeS Quantum Dots Prepared Through Aqueous Microwave Synthesis Technique作者：Zhan, Hong-Ju; Zhou, Pei-Jiang; Ma, Rong; Liu, Xi-Jing; He, Yu-Ning;Zhou, Chuan-Yun

来源出版物：JOURNAL OF FLUORESCENCE 卷：24 期：1 页：57-65 DOI：10.1007/s10895-013-1270-2 出版年：JAN 2014

摘要：Quasi core shell alloyed CdSeS quantum dots (QDs) have been prepared through a facile aqueous-phase route employing microwave irradiation technique. The optical spectroscopy and structure characterization evidenced the quasi core shell alloyed structures of CdSeS QDs. The X-ray diffraction patterns of the obtained CdSeS QDs displayed peak positions very close to those of bulk cubic CdS crystal structures and the result of X-ray photoelectron spectroscopy data re-confirmed the thick CdS shell on the CdSe core. The TEM images and HRTEM images of the CdSeS QDs ascertained the well-defined spherical particles and a relatively narrow size distribution. On the basis, the stability of the obtained QDs in an oxidative environment was also discussed using etching reaction by H2O2. The experiments result showed the as-prepared QDs present high tolerance towards H2O2, obviously superior to the commonly used CdTe QDs and core-shell CdTe/CdS QDs, which was attributed to the unique quasi core-shell CdSeS crystal structure and the small lattice mismatch between CdSe and CdS semiconductor materials. This assay provided insight to obtain high stable crystal structured semiconductor nanocrystals in the design and synthesis process.

入藏号：WOS:000334110900008

文献类型：Article

语种：English

作者关键词：Quasi core-shell alloyed quantum dots, Oxidation stability, CdSeS quantum dots, Microwave-assisted synthesis

扩展关键词：CDTE NANOCRYSTALS; LIVING CELLS; IN-VIVO; SEMICONDUCTOR CLUSTERS; SURFACE-TREATMENT; PHOTOLUMINESCENCE; PHOTOSTABILITY; CYTOTOXICITY; SPECTROSCOPY; IRRADIATION

通讯作者地址：Zhou, Pei-Jiang; Wuhan Univ, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

电子邮件地址：2010102050026@whu.edu.cn; zhoupj@whu.edu.cn

地址：

[Zhan, Hong-Ju; Zhou, Pei-Jiang; Ma, Rong; Liu, Xi-Jing; He, Yu-Ning; Zhou, Chuan-Yun]Wuhan Univ, Sch Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430079, Peoples R China.

研究方向：Biochemistry & Molecular Biology; Chemistry

ISSN：1053-0509