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Fabrication and characterizations of a hydrogen sensor with palladium Schottky contacts, grown on radio frequency sputtered zinc oxide thin film is reported. Temperature dependence performance analysis of the proposed sensor was carried out at different hydrogen concentrations (50–1000 ppm) and temperatures (25°C–200°C) using current–voltage ($I$ –$V$ ) measurements. Lateral shifts have been observed...
Polydimethylglutarimide (PMGI), a photosensitive positive type resin used in photoresists, is shown to be an effective moisture barrier for mitigating the effect of humidity on the sensitivity of Pt-AlGaN/GaN Schottky diodes for hydrogen detection. The maximum relative current change observed in PMGI-encapsulated diodes forward biased at 1.3 V and exposed to 500 ppm of dry or humid H2 is identical...
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