Structural changes in chemically deposited CdS: effect of thermal annealing [Articol]
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Abstract
The dynamics of changes in the structural and optical properties of chemical bath-
deposited (CBD) CdS/glass thin films in H2 annealing process in a pre-heated furnace between 200–450°C was studied systematically. Annealing imparts structural stability to the layers, but reduces band gap (Eg). Results of X-ray diffraction (XRD) and visible optical spectroscopy characterization of annealed CBD CdS/glass thin films are presented. We propose a hypothesis about substitutional incorporation of OH group on S site in CdS lattice in the deposition process and its responsibility for changes in the optical and structural properties of CdS in the annealing process. Cubic CdS is a stable and prevalent phase in CBD CdS at 450°C.
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MATICIUC, Natalia; POTLOG, Tamara; HIIE, J.; MIKLI, V.; POLDME, Nils; RAADIK, T.; VALDNA, V.; MERE, Arvo; GAVRILOV, A.; QUINCI, F.; LUGHI, V.; SERGO, V.. Structural changes in chemically deposited CdS: effect of thermal annealing. In: Moldavian Journal of the Physical Sciences. 2010, nr. 3-4(9), pp. 275-279. ISSN 1810-648X.