27 November 2012 Giant laser-induced thermoelectric voltage in c-axis inclined NaxCoO2 thin films
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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.
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Shufang Wang, Shufang Wang, Haifeng Wang, Haifeng Wang, Shanshan Chen, Shanshan Chen, Zilong Bai, Zilong Bai, Guoying Yan, Guoying Yan, Jianglong Wang, Jianglong Wang, Wei Yu, Wei Yu, Guangsheng Fu, Guangsheng Fu, "Giant laser-induced thermoelectric voltage in c-axis inclined NaxCoO2 thin films", Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 85551F (27 November 2012); doi: 10.1117/12.2001070; https://doi.org/10.1117/12.2001070


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