1/f noise and nonlinear effects in Cadmium Oxide thin films for different current
densities on varying the thickness of the films, at room temperature are studied. The specific
dependence of 1/f noise on the thickness of the film, the effect of current densities on 1/f
noise for the films of various thicknesses (300 Å to 750 Å) has been investigated. It is noticed
that, for a constant current, the thickness of the film leads to an increase of 1/f noise. 1/f noise
plays an important role in choosing frequency band in which a device can be effectively used.
Cadmium oxide thin films are regarded as a material with many attracting properties such as
large energy band gap, good conduction, high transmission coefficient etc. It is specially used
in optoelectronic devices.
Keywords: 1/f noise; nonlinear effects; Cadmium Oxide thin films
full paper (pdf, 1312 Kb)