Synthesis and optical properties of CdS quantum dot-embedded silica film for luminescent down-shifting layer

Zhenyi Chen; Juan Qin; Xiaoli Zhang; Min Zhang; Weimin Shi; Linjun Wang

doi:10.1117/12.888425

18 February 2011 Synthesis and optical properties of CdS quantum dot-embedded silica film for luminescent down-shifting layer

Zhenyi Chen, Juan Qin, Xiaoli Zhang, Min Zhang, Weimin Shi, Linjun Wang

Author Affiliations +

Proceedings Volume 7995, Seventh International Conference on Thin Film Physics and Applications; 79952M (2011) https://doi.org/10.1117/12.888425
Event: Seventh International Conference on Thin Film Physics and Applications, 2010, Shanghai, China

Abstract

In this paper, silica thin films with different CdS quantum dot concentrations are deposited on glass substrates by a sol-gel dip-coating process, followed by thermal treatment at different annealing temperatures. The effects of CdS concentration and annealing temperature on the structural and optical properties of the composite films are investigated through X-ray diffraction, UV-Vis spectroscopy and photoluminescence spectra. Results show that the CdS crystallites with diameter of several nanometers in silica matrix are in cubic phase and shows preferred orientation of (200). The Stokes shift of about 0.3eV between its absorption peak and emission peak makes the CdS composite film be possible as an efficient light shifter to solar cells.

Citation Download Citation

Zhenyi Chen, Juan Qin, Xiaoli Zhang, Min Zhang, Weimin Shi, and Linjun Wang "Synthesis and optical properties of CdS quantum dot-embedded silica film for luminescent down-shifting layer", Proc. SPIE 7995, Seventh International Conference on Thin Film Physics and Applications, 79952M (18 February 2011); https://doi.org/10.1117/12.888425

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