Controlled synthesis of cadmium-free CuInS2/ZnS quantum dots

Xiao-bo Wang; Juan Chen; Jing Liu; Jian-wei Liu; Hong Ding; Ken-Tye Yong; Ling Ye; Shu-li He

doi:10.1117/12.901087

11 August 2011 Controlled synthesis of cadmium-free CuInS₂/ZnS quantum dots

Xiao-bo Wang, Juan Chen, Jing Liu, Jian-wei Liu, Hong Ding, Ken-Tye Yong, Ling Ye, Shu-li He

Proceedings Volume 8195, International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications; 81951O (2011) https://doi.org/10.1117/12.901087
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

This paper reports a hot colloidal synthesis method toward the synthesis of CuInS₂/ZnS hybrid nanoparticles. First, CuInS2 quantum dots (QDs) were synthesized in the noncoordinating solvent octadecene using copper nitrate, indium acetate, myristic acid, oleylamine and dodecanethiol. CuInS₂ QDs with diameter of 2~10 nm were obtained by tuning the reaction temperature and time. Secondly, CuInS₂/ZnS core/shell QDs with different thickness of ZnS shell were synthesized by seed-mediated growth method, which can prevent the CuInS₂ QDs oxidized and improve their photo luminance. Low-toxic cadmium-free CuInS₂/ZnS QDs with high PL efficiency are expected to be used for bio-label.

Citation Download Citation

Xiao-bo Wang, Juan Chen, Jing Liu, Jian-wei Liu, Hong Ding, Ken-Tye Yong, Ling Ye, and Shu-li He "Controlled synthesis of cadmium-free CuInS₂/ZnS quantum dots", Proc. SPIE 8195, International Symposium on Photoelectronic Detection and Imaging 2011: Terahertz Wave Technologies and Applications, 81951O (11 August 2011); https://doi.org/10.1117/12.901087

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KEYWORDS

Copper indium disulfide

Zinc

Luminescence

Nanocrystals

Quantum dots

Transmission electron microscopy

X-ray diffraction

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