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http://hdl.handle.net/10397/95709
Title: | Highly (100)-orientated SnSe thin films deposited by pulsed-laser deposition | Authors: | Gong, X Feng, M Wu, H Zhou, H Suen, C Zou, H Guo, L Zhou, K Chen, S Dai, J Wang, G Zhou, X |
Issue Date: | 1-Jan-2021 | Source: | Applied surface science, 1 Jan. 2021, v. 535, 147694 | Abstract: | This work aims at improving the quality of the highly (100)-orientated SnSe thin films for thermoelectric applications. The as-deposited films were obtained by controlling the basic parameters including target-to-substrate distance, deposition time and growth temperature through pulsed-laser deposition. The films quality was further improved by vacuum thermal annealing. The microstructure and crystalline structure of the films were studied by X-ray photoelectron spectroscopy, X-ray diffraction, electron probe micro-analyzer, electron back-scatter diffraction, atomic force microscope and Raman spectroscopy. The SnSe thin films grown on SiO2/Si substrate at 673 K followed by thermal annealing at 673 K for 30 min show the best crystal quality and uniform orientation with mirror-like surface, and the corresponding Seebeck coefficient and power factor are about 383 μV/K and 15.4 μW/m⋅K2, respectively. Angle resolved polarized Raman spectroscopy proved that the surface of the SnSe films is the b-c plane with preferred (100) orientation crystalline over a large area, providing an important way to prepare thermoelectric thin film devices by pulse laser deposition. | Keywords: | Angle-resolved polarized Raman spectra Pulsed laser deposition SnSe Thermal annealing Thin films |
Publisher: | Elsevier | Journal: | Applied surface science | ISSN: | 0169-4332 | EISSN: | 1873-5584 | DOI: | 10.1016/j.apsusc.2020.147694 | Rights: | © 2020 Elsevier B.V. All rights reserved. © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Gong, X., Feng, M., Wu, H., Zhou, H., Suen, C., Zou, H., ... & Zhou, X. (2021). Highly (1 0 0)-orientated SnSe thin films deposited by pulsed-laser deposition. Applied Surface Science, 535, 147694 is available at https://doi.org/10.1016/j.apsusc.2020.147694. |
Appears in Collections: | Journal/Magazine Article |
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Suen_Highly_Thin_Films.pdf | Pre-Published version | 2.47 MB | Adobe PDF | View/Open |
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