Use of thermal energy for surface contact potential gas detection
- 15 January 1991
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 69 (2) , 1102-1103
- https://doi.org/10.1063/1.347378
Abstract
In a recent paper, Christofides and Mandelis [J. Appl. Phys. 66, 3975 (1989)] postulated the existence of a hydrogen-induced modulation of the pyroelectric coefficient of polyvinylidene difluoride when a Pd film is exposed to hydrogen gas. Their evidence was a photothermally induced signal. By examining the theory of the hydrogen effect on Pd, we established that a more likely cause is the thermal modulation of the contact potential difference between the PD and the counter-electrode. We demonstrate that the same behavior is observed when hydrogen gas is exposed to a Pd-mica-Au capacitor as observed by Christofides and Mandelis.This publication has 3 references indexed in Scilit:
- Operating characteristics and comparison of photopyroelectric and piezoelectric sensors for trace hydrogen gas detection. I. Development of a new photopyroelectric sensorJournal of Applied Physics, 1989
- Hydrogen and ammonia response of metal-silicon dioxide-silicon structures with thin platinum gatesJournal of Applied Physics, 1988
- Gas sensors based on catalytic metal-gate field-effect devicesSensors and Actuators, 1986