Characteristics of Amorphous As2S3 Semiconductor Films Obtained via Spin Coating
- Authors: Hang Thi Nguyen 1, Yakubov A.O.2, Lazarenko P.I.2, Volkova A.V.2, Sherchenkov A.A.2, Kozyukhin S.A.3,4
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Affiliations:
- Moscow State Pedagogical University
- National Research University of Electronic Technology
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences
- National Research Tomsk State University
- Issue: Vol 52, No 15 (2018)
- Pages: 1963-1968
- Section: Technological Processes and Routes
- URL: https://journals.rcsi.science/1063-7826/article/view/205222
- DOI: https://doi.org/10.1134/S1063782618150058
- ID: 205222
Cite item
Abstract
Centrifugation is used in fabricating, e.g., films with large areas and/or thicknesses of several micrometers. However, it has yet to be widely employed for chalcogenide compounds, due to their relatively weak solubility in most solvents. Determining the optimum conditions for preparing solutions of chalcogenide compounds and obtaining films via centrifugation is therefore of great interest. Specific features of amorphous arsenic sulfide (As2S3) films prepared via the centrifugation of solutions in n-butylamine have been studied. These films were characterized by means of X-ray diffraction analysis, IR spectroscopy, atomic-force microscopy and Raman spectroscopy. It was shown that amorphous As2S3 films have a greater elasticity modulus than those of analogous composition produced via thermal evaporation in vacuum, or As2S3 glass. A structural model based on arsenic sulfide clusters whose surfaces are bound by negatively and positively charged ions is used to explain the experimental results obtained in this work. DC measurements show that the amorphous films exhibit semiconductor-type conductivity. Their room temperature conductivity is ~10−15 S/cm, which indicates good dielectric properties. The films are optically transparent starting from the yellow spectral range, making them promising functional materials for engineering applications in optics and photonics.
About the authors
Hang Thi Nguyen
Moscow State Pedagogical University
Email: aa_sherchenkov@rambler.ru
Russian Federation, Moscow, 119435
A. O. Yakubov
National Research University of Electronic Technology
Email: aa_sherchenkov@rambler.ru
Russian Federation, Moscow, 124498
P. I. Lazarenko
National Research University of Electronic Technology
Email: aa_sherchenkov@rambler.ru
Russian Federation, Moscow, 124498
A. V. Volkova
National Research University of Electronic Technology
Email: aa_sherchenkov@rambler.ru
Russian Federation, Moscow, 124498
A. A. Sherchenkov
National Research University of Electronic Technology
Author for correspondence.
Email: aa_sherchenkov@rambler.ru
Russian Federation, Moscow, 124498
S. A. Kozyukhin
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences; National Research Tomsk State University
Email: aa_sherchenkov@rambler.ru
Russian Federation, Moscow, 119991; Tomsk, 634050