Pulsed Laser Deposition of c-Axis Oriented BiCuSeO Epitaxial Film and Its Thermoelectric Properties
YUAN Dachao1,2, GUO Shuang2, HAO Jianjun1, MA Yuejin1, WANG Shufang2
1 College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding 071001 2 College of Physical Science and Technology, Hebei University, Baoding 071002
Abstract: BiCuSeO thin films were prepared on single crystal SrTiO3 substrates by pulsed laser deposition, and the impact of deposition temperature on the crystal structure, micromophology and thermoelectric transport properties of the films was investigated in detail. At the optimal deposition temperature of 330 ℃, pure phase and c-axis oriented BiCuSeO thin films could be obtained, showing a epitaxial relationships between the substrates and the films of [010]SrTiO3∥[010]BiCuSeO and [001]SrTiO3∥[100]BiCuSeO. It could be found from the results of electrical properties test that the film exhibited a metallic-like conducting behavior over range of 20—350 K, with the room temperature resistivity of only 12.5 mΩ·cm, which was much lower than that of the corresponding polycrystalline bulk materials. The calculated room temperature power factor (PF) of the films was about 3.3 μW·cm-1·K-2, which was higher than that of the corresponding polycrystalline bulk materials, indicating a great application prospect of c-axis oriented BiCuSeO epitaxial thin films in the field of thin-film thermoelectric devices.
Zhao L D, Berardan D, Pei Y L, et al. Applied Physics Letters,2010,97(9),092118.2 Liu Y, Zhao L D, Zhu Y, et al. Advanced Energy Materials,2016,6(9),1502423.3 Joshi G, Lee H, Lan Y, et al. Nano Letter,2008,8(12),4670.4 Xie H H, Wang H, Pei Y L, et al. Advanced Functional Materials,2013,23(41),5123.5 Yan X, Liu W, Wang H, et al. Energy & Environmental Science,2012,5(6),7543.6 Sui J, Li J, He J, et al. Energy & Environmental Science,2013,6(10),2916.7 Wang S F, Chen S S, Chen J C, et al. Acta Physica Sinica,2012,61(6),066804(in Chinese).王淑芳,陈姗姗,陈景春,等.物理学报,2012,61(6),066804.8 Stampler E S, Sheets W C, Bertoni M I, et al. Inorganic Chemistry,2008,47(21),10009.9 Barreteau C, Bérardan D, Amzallag E, et al. Chemistry of Materials,2012,24(16),3168.10 Berardan D, Zhao L D, Barreteau C, et al. Physica Status Solidi A,2012,209(11),2273.11 Luu S D N, Vaqueiro P. Journal of Materials Chemistry A,2013,1(39),12270.12 Zhao L D, He J, Berardan D, et al. Energy & Environmental Science,2014,7(9),2900.13 Jung K H, Hyoung Lee K, Seo W S, et al. Applied Physics Letters,2012,100(25),253902.14 Tsujii N, Mori T. Applied Physics Express,2013,6(4),043001.15 Liu Y, Ding J, Xu B, et al. Applied Physics Letters,2015,106(23),233903.16 Pei Y L, He J, Li J F, et al. NPG Asia Materials,2013,5(5),e47.17 Lan J L, Zhan B, Liu Y C, et al. Applied Physics Letters,2013,102(12),123905.
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2019, Vol. 33 
