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Journal of the Chilean Chemical Society

On-line version ISSN 0717-9707

Abstract

TEJOS R, MARISOL; ROLON, BÁRBARA G; DEL RIO, RODRIGO  and  CABELLO, GERARDO. INVESTIGATION AND OPTICAL EVALUATION OF PRECURSORS FOR THE PHOTODEPOSITION OF NANOSIZED ZnS AMORPHOUS THIN FILMS. J. Chil. Chem. Soc. [online]. 2007, vol.52, n.3, pp.1257-1260. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072007000300015.

Thin amorphous nanostructured ZnS films have been photochemically obtained by means of direct UV radiation (X= 254 nm) of the complex Zn [ (CH3)2CHCH2OCS2 ]2 deposited on Si(100) and on ITO glass through the spin-coating technique. The UV photolysis of thin films of Zinc Xanthate complex results in the loss of all ligands from the coordination sphere. The binding energy values for as-deposited films in X-Ray Photoelectron Spectra were 1022.7 eV for Zn2p3 and 163-169 eV for S 2p. The as-deposited film showed a non-uniform rough surface with a root-mean-square (rms) roughness of 48.5 nm and a maximum height, Rmax, of 460.5 nm. The annealed ZnS films showed a uniform and a reasonably light but smooth surface with a rms roughness of 43.0 nm and Rmax of 274.2 nm. The optical band gap was determined and found to be 3.2 ± 0.01 eV and 3.25 ± 0.01 eV

Keywords : Amorphous Materials; Photochemistry Synthesis; Atomic Force Microscopy; Optical Properties.

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