Authors
Abstract
Nanocrystallites of cadmium oxide (CdO) thin films were deposited by pulsed laser
deposition technique on glass substrates using Nd:YAG laser at 532nm wave length.
X-ray diffraction (XRD) patterns confirmed the nanocrystalline cubic CdO phase
formation. The intensity of XRD peaks increases with the increase in substrate
temperature and better crystallinity takes place at higher temperature. The
morphology of deposited films were characterized by scanning electron microscope
(SEM) and atomic force microscope (AFM); with increasing substrate temperature,
both the grain size and surface roughness increase .The grain size value (12,18,47
nm) and rms roughness values were 63.3, 98.8 and 138.4 nm for thin films deposited
at 100 , 200 and 300ºC respectively. UV–Vis spectrophotometric measurement
showed high transparency (nearly 88 % in the wavelength range 500–900 nm) of the
CdO thin film with a direct allowed band gap value lying in the range 2.81–3.7eV
Keywords
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