Photothermal Electrostatics of the Pd-PVDF Photopyroelectric Hydrogen Gas Sensor
Date
1992Source
Photoacoustic and Photothermal Phenomena III Proceedings of the 7th International Topical Meeting, Doorwerth, The Netherlands, August 26–30, 1991Pages
6-8Google Scholar check
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Abstract A detailed photothermal electrostatic consideration of the Pd-pyroelectric junction H 2 sensor is presented. Experimental evidence is in agreement with the fundamental features of the theory, which supports two possible mechanisms of ac-mode device operation: pyroelectric coefficient dependence on the hydrogenic dipole-induced charge density at the Pd-insulator (polyvinylidene fluoride, PVDF) interface upon H 2 adsorption, absorption and diffusion into the Pd matrix, and Pd work-function shift due to hydrogen absorption. The ...