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This article is cited in 27 scientific papers (total in 27 papers)
Surface, interfaces, thin films
A comparative study on the electronic and optical properties of Sb$_{2}$Se$_{3}$ thin film
M. Kamruzzamanab, Chaoping Liua, A. K. M. Farid Ul Islamc, J. A. Zapienab a Department of Physics and Materials Science, City University of Hong Kong, P.R. China
b Center of Super-Diamond and Advanced Films, City University of Hong Kong, P.R. China
c Department of Computer Science and Engineering, Begum Rokeya University, Rangpur, Rangpur-5400, Bangladesh
Abstract:
The thin film of Sb$_{2}$Se$_{3}$ was deposited by thermal evaporation method and the film was annealed in N$_{2}$ flow in a three zone furnace at a temperature of 290$^\circ$C for 30 min. The structural properties were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy, respectively. It is seen that the as-deposited film is amorphous and the annealed film is polycrystalline in nature. The surface of Sb$_{2}$Se$_{3}$ film is oxidized with a thickness of 1.15 nm investigated by X-ray photolecetron spectroscopy (XPS) measurement. Spectroscopic ellipsometry (SE) and UV-vis spectroscopy measurements were carried out to study the optical properties of Sb$_{2}$Se$_{3}$ film. In addition, the first principles calculations were applied to study the electronic and optical properties of Sb$_{2}$Se$_{3}$. From the theoretical calculation it is seen that Sb$_{2}$Se$_{3}$ is intrinsically an indirect band gap semiconductor. Importantly, the experimental band gap is in good agreement with the theoretical band gap. Furthermore, the experimental values of n,k,varepsilon$_{1}$, and varepsilon$_{2}$ are much closer to the theoretical results. However, the obtained large dielectric constants and refractive index values suggest that exciton binding energy in Sb$_{2}$Se$_{3}$ should be relatively small and an antireflective coating is recommended to enhance the light absorption of Sb$_{2}$Se$_{3}$ for thin film solar cells application.
Received: 02.09.2016 Revised: 27.04.2017
Citation:
M. Kamruzzaman, Chaoping Liu, A. K. M. Farid Ul Islam, J. A. Zapien, “A comparative study on the electronic and optical properties of Sb$_{2}$Se$_{3}$ thin film”, Fizika i Tekhnika Poluprovodnikov, 51:12 (2017), 1673–1681; Semiconductors, 51:12 (2017), 1615–1624
Linking options:
https://www.mathnet.ru/eng/phts5973 https://www.mathnet.ru/eng/phts/v51/i12/p1673
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