High temperature thermoelectric properties of highly c-axis oriented Bi2Sr2Co2Oy thin films fabricated by pulsed laser deposition

doi:10.1088/1674-1056/21/8/087306

中国物理B ›› 2012, Vol. 21 ›› Issue (8): 87306-087306.doi: 10.1088/1674-1056/21/8/087306

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

High temperature thermoelectric properties of highly c-axis oriented Bi₂Sr₂Co₂O_y thin films fabricated by pulsed laser deposition

陈珊珊, 王淑芳, 刘富强, 闫国英, 陈景春, 王江龙, 于威, 傅广生

The College of Physics Science and Technology, Hebei University, Baoding 071002, China

收稿日期:2012-02-12 修回日期:2012-03-01 出版日期:2012-07-01 发布日期:2012-07-01
基金资助:
Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 10904030) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20091301120002).

High temperature thermoelectric properties of highly c-axis oriented Bi₂Sr₂Co₂O_y thin films fabricated by pulsed laser deposition

Chen Shan-Shan (陈珊珊), Wang Shu-Fang (王淑芳), Liu Fu-Qiang (刘富强), Yan Guo-Ying (闫国英), Chen Jing-Chun (陈景春), Wang Jiang-Long (王江龙), Yu Wei (于威), Fu Guang-Sheng (傅广生 )

The College of Physics Science and Technology, Hebei University, Baoding 071002, China

Received:2012-02-12 Revised:2012-03-01 Online:2012-07-01 Published:2012-07-01
Contact: Wang Shu-Fang, Wang Jiang-Long E-mail:swang2008@hotmail.com; wjl@hbu.edu.cn
Supported by:
Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 10904030) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20091301120002).

摘要/Abstract

摘要： High-temperature thermoelectric transport properties measurements have been performed on the highly c-axis oriented Bi₂Sr₂Co₂O_y thin films prepared by pulsed laser deposition on LaAlO₃ (001). Both the electric resistivity ρ and the seebeck coefficient S of the film exhibit an increasing trend with the temperature from 300 K-1000 K and reach up to 4.8 m·Ω·cm and 202 μV/K at 980 K, resulting in a power factor of 0.85 mW/mK which are comparable to those of the single crystalline samples. A small polaron hopping conduction can be responsible for the conduction mechanism of the film at high temperature. The results demonstrate that the Bi₂Sr₂Co₂O_y thin film has potential application in high temperature thin film thermoelectric devices.

关键词: high temperature thermoelectric properties, Bi₂Sr₂Co₂O_y thin films, c-axis oriented, pulsed laser deposition

Abstract: High-temperature thermoelectric transport properties measurements have been performed on the highly c-axis oriented Bi₂Sr₂Co₂O_y thin films prepared by pulsed laser deposition on LaAlO₃ (001). Both the electric resistivity ρ and the seebeck coefficient S of the film exhibit an increasing trend with the temperature from 300 K-1000 K and reach up to 4.8 m·Ω·cm and 202 μV/K at 980 K, resulting in a power factor of 0.85 mW/mK which are comparable to those of the single crystalline samples. A small polaron hopping conduction can be responsible for the conduction mechanism of the film at high temperature. The results demonstrate that the Bi₂Sr₂Co₂O_y thin film has potential application in high temperature thin film thermoelectric devices.

Key words: high temperature thermoelectric properties, Bi₂Sr₂Co₂O_y thin films, c-axis oriented, pulsed laser deposition

中图分类号: (Thermoelectric effects)

73.50.Lw

72.80.Ga (Transition-metal compounds) 81.15.Fg (Pulsed laser ablation deposition)

陈珊珊, 王淑芳, 刘富强, 闫国英, 陈景春, 王江龙, 于威, 傅广生 . High temperature thermoelectric properties of highly c-axis oriented Bi₂Sr₂Co₂O_y thin films fabricated by pulsed laser deposition[J]. 中国物理B, 2012, 21(8): 87306-087306.

Chen Shan-Shan (陈珊珊), Wang Shu-Fang (王淑芳), Liu Fu-Qiang (刘富强), Yan Guo-Ying (闫国英), Chen Jing-Chun (陈景春), Wang Jiang-Long (王江龙), Yu Wei (于威), Fu Guang-Sheng (傅广生 ). High temperature thermoelectric properties of highly c-axis oriented Bi₂Sr₂Co₂O_y thin films fabricated by pulsed laser deposition[J]. Chin. Phys. B, 2012, 21(8): 87306-087306.

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High temperature thermoelectric properties of highly c-axis oriented Bi₂Sr₂Co₂O_y thin films fabricated by pulsed laser deposition

High temperature thermoelectric properties of highly c-axis oriented Bi₂Sr₂Co₂O_y thin films fabricated by pulsed laser deposition

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