The barrier height of a Pd‐CdS Schottky diode is reported to decrease markedly when exposed to hydrogen. This effect is believed to be due to the decrease in Pd work function. It makes a good simple hydrogen detector (even at 298 °K) over the range 500–5000 ppm H2.
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Research Article| August 28 2008
Palladium/cadmium‐sulfide Schottky diodes for hydrogen detection
Martin C. Steele;
Appl. Phys. Lett. 28, 687–688 (1976)
Martin C. Steele, Bernard A. MacIver; Palladium/cadmium‐sulfide Schottky diodes for hydrogen detection. Appl. Phys. Lett. 1 June 1976; 28 (11): 687–688. https://doi.org/10.1063/1.88623
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