Browsing by Author "Yu, Chih-Kuan"

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Investigating the Gas Sensing Mechanism of the Vertical Polymer Space-Charge-Limited Transistor
(2012)
Li, Chang-Hung
;
Zan, Hsiao-Wen
;
Yu, Chih-Kuan
;
Meng, Hsin-Fei
;
光電工程學系
A high-sensitivity gas sensor based on SCLT is demonstrated in this paper. The oxidizing and reducing gases which act as electron dedoping (e-dedoping) and doping (e-doping) agents on the transistor active layer is investigated. Dedoping and doping the active layer varies the potential distribution in the vertical channel, and changes the output current density. The lowest detectable concentration of ammonia was 30 ppb at a base-to-emitter voltage as -0.2 V and collector-to-emitter voltage as -1.2 V.
Sensitive gas sensor embedded in a vertical polymer space-charge-limited transistor
(1970-01-01)
Zan, Hsiao-Wen
;
Li, Chang-Hung
;
Yu, Chih-Kuan
;
Meng, Hsin-Fei
;
物理研究所
"We report a very sensitive gas sensor embedded in a vertical polymer space-charge-limited transistor. The oxidizing and reducing gases act as electron dedoping and electron doping agents on the transistor active layer to change the potential distribution in the vertical channel and hence to change the output current density. With a 30-ppb detection limit to ammonia, the sensor can be used for non-invasive breath monitor in point-of-care applications. The integration of a sensitive gas sensor and a low-operation-voltage transistor in one single device also facilitates the development of low-cost and low-power-consumption sensor array. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4734498]"