期刊
SURFACE AND INTERFACE ANALYSIS
卷 50, 期 3, 页码 346-353出版社
WILEY
DOI: 10.1002/sia.6374
关键词
copper concentration variation; Cu2O thin films; Cu2O; ZnO heterojunction; heterojunction solar cell; nebulizer spray pyrolysis
资金
- Deanship of Scientific Research at King Khalid University [R.G.P.2/3/38]
- King Khalid University [R.G.P.2/3/38]
High quality copper oxide thin films were prepared by nebulizer spray pyrolysis technique using different concentrations of copper precursor solution. Concentration-dependent structural, morphological, optical, and electrical properties of the prepared films are discussed. X-ray diffraction studies done for the samples confirmed that the deposited films are in Cu2O phase with polycrystalline cubic structure. Atomic force microscopy analysis revealed that all the films are composed of nano sheet shaped grains covering the substrate surface. Optical studies done on the samples showed band gap values 2.42, 2.31, and 2.02eV for the solution concentration 0.01, 0.05, and 0.1M, respectively. Photoluminescence spectral analysis showed the emission band at 620nm confirming the formation of cuprous oxide. Electrical analysis of the films showed p-type conductivity with a low resistivity 2.19x10(2).cm and high carrier concentration 16.76x10 (15)cm(-3) for the molar concentration 0.1M. In this work, Cu2O/ZnO heterojunctions were also prepared, and solar cell properties were studied; they were found to show increased open circuit voltage and short circuit current for higher copper concentration.
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