Microstructural and optical characterizations of highly stable nanospheres of crystalline CdS via selective approach

A. L. Leal-Cruz*, A. Vera-Marquina, D. Berman-Mendoza, C. VillaVeĺazquez-Mendoza, I. E. Zald́ivar-Huerta, L. A. Garćia-Delgado, A. Garćia-Júarez, R. Ǵomez-Fuentes, A. G. Rojas-Herńandez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A novel and selective approach to obtain highly stable and capping nanospheres of crystalline cadmium sulfide (CdS) via solution growth in cadmium nitrate tetrahydrate-thiourea-ligand-pH buffer systems using a Taguchi experimental design is presented. CdS characterization is carried out by laser diffraction particle size analyzer, X-ray diffraction, scanning electron microscope/energy dispersive X-ray spectroscopy, and UV-Vis absorption spectroscopy. Synthesized nanospheres of crystalline CdS with an average crystal particle diameter of 37.5 nm and a capping layer thickness of 17.7-35.7 nm (73 to 115 nm as capped nanoparticles) keep size and form stable in aqueous solution. These crystalline CdS nanospheres exhibit a 2.46 eV band gap, as well as, an optical bandwidth comprises in the visible range with potential applications in solar cells.

Original languageEnglish
Pages (from-to)129-141
Number of pages13
JournalOptical Materials Express
Volume4
Issue number1
DOIs
StatePublished - 1 Jan 2014

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