Structural, optical, and electrical properties of Cu2SnS3 thin films produced by sol gel method
- 83 Downloads
The structural, optical, and electrical properties of p-type Cu2SnS3 thin films produced by the deposition of a dimethylsulfoxide-based sol gel solution using the centrifugation on substrates with subsequent heat treatment of the layers formed have been studied. The conditions of formation of the films using low-temperature short-time treatments in open atmosphere and a final annealing in a low vacuum (0.1 Pa) have been analyzed. The crystallite sizes D ~ 42 nm in the polycrystalline films have been found using X-ray phase analysis. Their compositions have been confirmed using the Raman spectra and the energy-dispersive X-ray analysis. The optical forbidden band width of direct allowed (E g d ~ 1.25 eV) and direct forbidden (E g df ≈ 0.95 eV) optical transitions have been determined as a result of the light transmission and absorption. Based on the study of the electrical properties using a model of polycrystalline materials, the validity of the produced films with resistivity ρ ≈ 0.21 Ω cm, the hole concentration p 0 ≈ 1.75 × 1019 cm–3, and the effective mobility μ p ≈ 1.67 cm2/(V s) for manufacturing solar cells.
Unable to display preview. Download preview PDF.
- 9.S. Rabaoui, H. Dahman, S. Dekhil, K. Omri, A. Alyamani, and L. El Mir, J. Mater. Sci.: Mater. Electron. 26, 8588 (2015).Google Scholar
- 13.S. Rabaoui, H. Dahman, N. B. Mansour, and L. El Mir, J. Mater. Sci.: Mater. Electron. 26, 1119 (2015).Google Scholar
- 15.Dimethyl Sulfoxide Producers Association (US Environmental Protection Agency, Leesburg, 2003), Report No. 201-14721A.Google Scholar
- 17.Powder Diffraction File Card 27-0196 (Joint Committee on Powder Diffraction Standards, International Center for Diffraction Data, Swarthmore, Philadelphia, United States).Google Scholar
- 21.V. P. G. Vani, M. V. Reddy, and K. T. R. Reddy, Condens. Matter Phys. 2013, 142029 (2013).Google Scholar