Three-terminal-controlled resistor-type hydrogen sensor

C. W. Hung, H. L. Lin, Y. Y. Tsai, P. H. Lai, S. I. Fu, Huey-Ing Chen, Wen-Chau Liu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A novel and interesting three-terminal-controlled active resistor-type hydrogen sensor, based on good properties in the linear region of an AlGaAs-based pseudomorphic high electron mobility transistor in combination with the catalytic Pd metal, is demonstrated. The experimental results show that the gate-source voltage VGS exhibits significant influence on the hydrogen-sensing properties, including resistance sensitivity, detection limit of hydrogen concentration, conductance variation, current variation and dynamic response. Consequently, under an appropriate applied VGS bias, a smart active resistor-type hydrogen sensor can be achieved.

Original languageEnglish
Pages (from-to)578-580
Number of pages3
JournalElectronics Letters
Issue number10
Publication statusPublished - 2006 May 24

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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