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Proceedings Paper

Deposition of cadmium sulfide and cadmium selenide thin films using chemical bath deposition technique
Author(s): Liangmin Zhang; Erik Sousa; Ivan Mondragon; Anthony Linares-Garcia ; William Cheung; Salvador Montes; David Bishel; Joseph Mini; Lifeng Dong
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Paper Abstract

A simple, convenient and low cost chemical synthesis technique, chemical bath deposition, are used to deposit cadmium sulfide (CdS) and cadmium selenide (CdSe) quantum dots on glass substrates. Based our characterizations, high quality CdS and CdSe thin films have been deposited on the substrates. In order to synthsize CdS quantum dots on glass, we use cadmium sulfate (CdSO4), ammonia water (NH4OH) and thiourea (CS(NH2)2) as reaction agents. For CdSe thin films, we use cadmium acetate as cadmium ion source and sodium selenosulfate / thiourea as a selenium / sulfur ion sources. Aqueous ammonia is used as a complex reagent and also to adjust the pH of the final solution. The asdeposited thin films using this technique are optically transparent, adherent, homogeneous and yellowish for CdS and redish for CdSe without powdered precipitation. The deposition can be made at 60 – 70°C under magnetic stirring for all samples. The films have been characterized by X-ray diffraction, scanning electron microscope (SEM), and UV-Vis absorption. The SEM measurements show that the shapes of deposited CdSe nanoparticles on glass substrates can be controlled to exhibit different shapes under different reaction conditions.

Paper Details

Date Published: 21 February 2018
PDF: 6 pages
Proc. SPIE 10543, Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XV, 1054310 (21 February 2018); doi: 10.1117/12.2309748
Show Author Affiliations
Liangmin Zhang, California State Univ., Stanislaus (United States)
Erik Sousa, California State Univ., Stanislaus (United States)
Ivan Mondragon, California State Univ., Stanislaus (United States)
Anthony Linares-Garcia , California State Univ., Stanislaus (United States)
William Cheung, California State Univ., Stanislaus (United States)
Salvador Montes, California State Univ., Stanislaus (United States)
David Bishel, California State Univ., Stanislaus (United States)
Joseph Mini, California State Univ., Stanislaus (United States)
Lifeng Dong, Hamline Univ. (United States)


Published in SPIE Proceedings Vol. 10543:
Quantum Dots and Nanostructures: Growth, Characterization, and Modeling XV
Diana L. Huffaker; Holger Eisele, Editor(s)

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