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- Title
Hydrogen gas sensor of Pd-functionalised AlGaN/GaN heterostructure with high sensitivity and low-power consumption.
- Authors
Choi, J.-H.; Jo, M.-G.; Han, S.-W.; Kim, H.; Kim, S.-H.; Jang, S.; Kim, J.-S.; Cha, H.-Y.
- Abstract
A Pd-functionalised hydrogen gas sensor based on an AlGaN/GaN heterostruture platform was investigated. The optimum bias voltage and reaction temperature were 0.1 V and 200°C, respectively, with which a wide range of hydrogen concentration from 0.1-4% in the air (i.e. 1000-40,000 ppm) was detectable. Not only low-power consumption but also high sensitivity with fast response was achieved due to the excellent properties of the AlGaN/GaN heterostructure platform. The sensitivity was 72.8% with a response time of ∼3 s in 4% hydrogen concentration.
- Subjects
HYDROGEN detectors; GAS detectors; ALUMINUM gallium nitride; GALLIUM nitride; HETEROSTRUCTURES
- Publication
Electronics Letters (Wiley-Blackwell), 2017, Vol 53, Issue 17, p1200
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2017.2107