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Proceedings Paper

Giant laser-induced thermoelectric voltage in c-axis inclined NaxCoO2 thin films
Author(s): Shufang Wang; Haifeng Wang; Shanshan Chen; Zilong Bai; Guoying Yan; Jianglong Wang; Wei Yu; Guangsheng Fu
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Paper Abstract

this paper, we have prepared c-axis inclined NaxCoO2 thin films on 10° and 20° tilted c-Al2O3 substrates and studied its light-induced thermoelectric voltage effect by using an ultraviolet pulsed laser as light source. A giant open-circuit voltage signal with the peak voltage Vp of tens of voltage was observed when the film surface was illuminated by the 308 nm pulsed radiation, and the Vp increased linearly with the inclination angle as well as the laser energy on the film. In addition, we found that Ag doping in NaxCoO2 films can improve the sensitivity of the thermoelectric voltage signal. The results demonstrate that c-axis inclined NaxCoO2 thin film has a great potential application in the detection of weak ultraviolet pulsed radiation.

Paper Details

Date Published: 27 November 2012
PDF: 7 pages
Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 85551F (27 November 2012); doi: 10.1117/12.2001070
Show Author Affiliations
Shufang Wang, Hebei Univ. (China)
Haifeng Wang, Hebei Univ. (China)
Shanshan Chen, Hebei Univ. (China)
Zilong Bai, Hebei Univ. (China)
Guoying Yan, Hebei Univ. (China)
Jianglong Wang, Hebei Univ. (China)
Wei Yu, Hebei Univ. (China)
Guangsheng Fu, Hebei Univ. (China)

Published in SPIE Proceedings Vol. 8555:
Optoelectronic Devices and Integration IV
Xuping Zhang; Hai Ming; Joel M. Therrien, Editor(s)

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