Open AccessSTUDYING THE EFFECT OF AG DOPING ON THE STRUCTURAL AND OPTICAL PROPERTIES OF CDO THIN FILMS PREPARED BY CHEMICAL SPRAY PYROLYSIS METHOD
Author(s) -
Hiba Qays Khaleel Al Qaisy,
Huda Mohammed Ali,
Ramiz Ahmad Al-Ansari
Publication year - 2021
Publication title -
minar international journal of applied sciences and technology
Language(s) - English
Resource type - Journals
ISSN - 2717-8234
DOI - 10.47832/2717-8234.2-3.22
Subject(s) - thin film , crystallite , materials science , doping , band gap , absorbance , analytical chemistry (journal) , substrate (aquarium) , cadmium oxide , diffraction , optics , optoelectronics , nanotechnology , chemistry , cadmium , metallurgy , organic chemistry , physics , oceanography , geology
In this work, thin films of undoped and Ag-doped CdO with (1and 3) wt.% were prepared by using spray pyrolysis method on glass substrate at of 350ºC with films thicknesses of (160-190) nm using spraying rate and pyrolysis time is 5 ml/min an 5sec respectively. The X-ray diffraction investigated the structural types of the CdO thin films after and before doped by Ag, XRD analysis showed that CdO:Ag films are highly polycrystalline and exhibit cubic crystal structure with (111) preferred orientation. However, the peak for all CdO:Ag films became more intense with a slight variation. The optical properties measure by ultra violet spectra, the optical study shows the spectral transmission and the optical energy band gap increases from 64.77% and 2.50 eV to 71.11% and 2.70 eV respectively depending upon the Ag content in the films, in contrary with the absorbance that increases with the decrease in wavelength and decreases with the increasing Ag doping concentration.