Abstract
Laser-induced voltage effects in c-axis inclined NaxCoO2 thin films have been studied by using different laser sources with the wavelength ranging from ultraviolet to far infrared. Due to the transverse thermoelectric effect, a giant open-circuit voltage signal with the peak voltage Vp of about 16V is detected when the film surface is illuminated by an ultraviolet 308nm pulsed laser with the laser energy on the film is about 1.5mJ. Open-circuit voltage signals are also detected when the film is illuminated by the 532nm and 10.6μm lasers. The results demonstrate that the c-axis inclined NaxCoO2 thin film has a great potential application in the detection of laser radiations for wide spectral range, especially in the weak ultraviolet pulsed laser detection.
Published Version
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