Document Type : Research
Authors
Department of Physics, Malayer University, Iran
Abstract
In this work, the effect of Fe impurity on CuSe nanostructured thin films during the deposition process has been investigated. The Fe impurity introduced into the CuSe nanostructure with different concentrations of 0.01, 0.02, and 0.03 mol was made by a simple chemical solution precipitation method. Introducing Fe impurity with different concentrations to CuSe creates new transitions related to FeSe in which many band gaps can be observed in the sample. FESEM and EDAX methods for elemental analysis have been used for absorption spectrum to determine energy band distance. In many samples, there are two transitions due to the role of iron in CuSe, therefore, the band gap transitions are related to FeSe and CuSe. A realistic method to determine the band gap energy without considering the assumptions related to the semiconductor structure is necessary, and the Tauc model is a suitable method to determine the band gap distance. Also, from the absorption spectrum of the samples, the Auerbach energy can be determined without the need to determine the absorption coefficient according to the thickness of the layers.
Keywords
- Mane and C. Lokhande, "Chemical deposition method for metal chalcogenide thin films," Materials Chemistry and physics, vol. 65, no. 1, pp. 1-31, 2000.S. H. Tan, B. I. Erkmen, V. Giovannetti, S. Guha, S. Lloyd, L. Maccone, S. Pirandola, J. H. Shapiro, Quantum illumination with Gaussian states, Phys. Rev. Lett. 101, 253601 (2008).
- Sun et al., "Ultrahigh discharge efficiency and improved energy density in rationally designed bilayer polyetherimide–BaTiO 3/P (VDF-HFP) composites," Journal of Materials Chemistry A, vol. 8, no. 11, pp. 5750-5757, 2020S.
- -T. Yin, J. Li, D. Dastan, W.-D. Zhou, H. Garmestani, and F. M. Alamgir, "Ultra-high selectivity of H2 over CO with a pn nanojunction based gas sensors and its mechanism," Sensors and Actuators B: Chemical, vol. 319, p. 128330, 2020
- Tao et al., "CO2 capture and separation on charge-modulated calcite," Applied Surface Science, vol. 530, p. 147265, 2020.
- Hermann and L. Fabick, "Research on polycrystalline thin-film photovoltaic devices," Journal of Crystal Growth, vol. 61, no. 3, pp. 658-664, 1983.
- Capper, Peter, Arthur Willoughby, and Safa O. Kasap. Optical properties of materials and their applications. John Wiley & Sons, 2020.
- Burda, Clemens, et al. "Chemistry and properties of nanocrystals of different shapes." Chemical reviews4 (2005): 1025-1102.
- Tauc, J., and A. Menth. "States in the gap." Journal of non-crystalline solids8 (1972): 569-585.
- Ghobadi, S. Chobin, S. Rezaee, and R. Shakoury, "Tuning the optical and photocatalytic features of copper selenide prepared by chemical solution deposition method," Surfaces and Interfaces, vol. 21, p. 100706, 2020.
- Haufe, R. Schwabe, H. Feiseler, and M. Ilegems, "The luminescence lineshape of highly doped direct-gap III-V compounds," Journal of Physics C: Solid State Physics, vol. 21, no. 15, p. 2951, 1988.
- Poornaprakash, U. Chalapathi, and S. P. Vattikuti, "Compositional, morphological, structural, microstructural, optical, and magnetic properties of Fe, Co, and Ni doped ZnS nanoparticles," Applied Physics A, vol. 123, pp. 1-10, 2017.
- Montes-Monsalve, J. I., R. Bernal Correa, and A. Pulzara Mora. "Optical and structural study of CuSe and CuSe/in thin films." Journal of Physics: Conference Series. Vol. 480. No. 1. IOP Publishing, 2014.
- Dutta, Amit Kumar, et al. "Synthesis of FeS and FeSe nanoparticles from a single source precursor: a study of their photocatalytic activity, peroxidase-like behavior, and electrochemical sensing of H2O2." ACS applied materials & interfaces4 (2012): 1919-1927.
- Mohamed, S. H. "Photocatalytic, optical and electrical properties of copper-doped zinc sulfide thin films." Journal of physics D: applied physics3 (2010): 035406.
- Poongodi, G., et al. "Studies on visible light photocatalytic and antibacterial activities of nanostructured cobalt doped ZnO thin films prepared by sol–gel spin coating method." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy148 (2015): 237-243.
- Chen, A. J., et al. "Structure and photoluminescence properties of Fe-doped ZnO thin films." Journal of Physics D: Applied Physics22 (2006): 4762.
- Dutta, Amit Kumar, et al. "Synthesis of FeS and FeSe nanoparticles from a single source precursor: a study of their photocatalytic activity, peroxidase-like behavior, and electrochemical sensing of H2O2." ACS applied materials & interfaces 4 (2012): 1919-1927.
- Kaur, Jagdish, and S. K. Tripathi. "Pb dopant induced changes in structural, optical and electrical properties of CdSe thin films." Journal of Alloys and Compounds622 (2015): 953-959.
- Kranjčec, Mladen, I. P. Studenyak, and M. V. Kurik. "On the Urbach rule in non-crystalline solids." Journal of Non-Crystalline Solids1 (2009): 54-57.