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
陈珊珊, 王淑芳, 刘富强, 闫国英, 陈景春, 王江龙, 于威, 傅广生
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 )
摘要: High-temperature thermoelectric transport properties measurements have been performed on the highly c-axis oriented Bi2Sr2Co2Oy 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 Bi2Sr2Co2Oy thin film has potential application in high temperature thin film thermoelectric devices.
中图分类号: (Thermoelectric effects)