DocumentCode
590425
Title
Investigating the gas sensing mechanism of the vertical polymer space-charge-limited transistor
Author
Chang-Hung Li ; Hsiao-Wen Zan ; Chih-Kuan Yu ; Hsin-Fei Meng
Author_Institution
Dept. of Photonic & Inst. of Electro-Opt., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fYear
2012
fDate
28-31 Oct. 2012
Firstpage
1
Lastpage
3
Abstract
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 (edoping) 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.
Keywords
gas sensors; organic semiconductors; semiconductor doping; thin film transistors; electron dedoping agent; gas sensing mechanism; oxidizing gas; reducing gas; transistor active layer; vertical polymer space charge limited transistor; voltage -0.2 V; voltage -1.2 V; Gas detectors; Organic thin film transistors; Sensor arrays; Substrates;
fLanguage
English
Publisher
ieee
Conference_Titel
Sensors, 2012 IEEE
Conference_Location
Taipei
ISSN
1930-0395
Print_ISBN
978-1-4577-1766-6
Electronic_ISBN
1930-0395
Type
conf
DOI
10.1109/ICSENS.2012.6411200
Filename
6411200
Link To Document