Open AccessEffect of Fe-Doping on the Properties of CdO Thin Films Prepared by Pulsed Laser Deposition
Author(s) -
Haidar K. Abbass,
Ali H. Khidir
Publication year - 2022
Publication title -
iraqi journal of science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.152
H-Index - 4
eISSN - 2312-1637
pISSN - 0067-2904
DOI - 10.24996/ijs.2022.63.3.8
Subject(s) - crystallinity , materials science , analytical chemistry (journal) , cadmium oxide , pulsed laser deposition , crystallite , doping , band gap , phase (matter) , thin film , deposition (geology) , particle size , cadmium , nanotechnology , chemistry , metallurgy , composite material , optoelectronics , paleontology , organic chemistry , chromatography , sediment , biology
Pure and iron-doped cadmium oxide ((CdO)1-xFex) thin films at different ratios were prepared using pulsed laser deposition technique. The X-ray diffraction showed a polycrystalline structure for all samples associated with cubic CdO structure. Another phase appeared at the highest ratio corresponding to the cubic Fe phase. Crystallinity was enhanced and crystalline size increased with increasing Fe ratio. AFM measurements showed that increase of Fe ratio led to an increase in the average particle diameter. In addition, the distribution of particle size became wide and of irregular behaviour, as well as increasing of the average roughness and the root-mean-square roughness. Increasing the Fe ratio caused the band gap to decrease from 2.3 eV to 2.1 eV. Hall effect measurements showed that the charge carrier concentration increased from 7.6 to 12.4 cm-3 with the increase of Fe ratio, while the mobility had the opposite behaviour, it decreased from 0.3 to 0.13 cm2/V.s as Fe content increased from 0 to 0.5 atom ratio.