DocumentCode :
1802593
Title :
A field effect transistor type gas sensor based on polyaniline
Author :
Lee, Sang-Mun ; Uhm, Sang-Jin ; Bang, Jung-Il ; Song, Kap-Duk ; Joo, Byung-Su ; Lee, Yun-Su ; Lee, Duk-Dong
Author_Institution :
Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea
Volume :
2
fYear :
2005
fDate :
5-9 June 2005
Firstpage :
1935
Abstract :
The researched sensor at this paper is based on gas sensitive conducting polymer. Some types of conducting polymer have gas sensitivity at room temperature (Matsuguchi et al., 2002). These conducting polymers have several shortages such as low sensitivity. The transistor type gas sensor has been studied for several decades. These sensors are based on metal oxide ceramics such as tin dioxide (Wollenstein et al., 2000 and Popova et al., 1991). We researched a polymer FET gas sensor. The sensor structure is similar to thin film transistor (TFT) one. This sensor can detect very low concentration of ammonia gas. The synthesized polyaniline has the resistance change for ammonia gas. Normally IDT electrode resistor sensor can detect several decade ppm or more ammonia gas. The FET type sensor which has the same polyaniline film can detect 5 ppm of ammonia.
Keywords :
conducting polymers; field effect transistors; gas sensors; sensitivity; IDT electrode resistor sensor; ammonia gas; conducting polymer; field effect transistor; gas sensitivity; metal oxide ceramics; polyaniline film; polymer FET gas sensor; sensor structure; thin film transistor; tin dioxide; Ceramics; Electrodes; FETs; Gas detectors; Polymers; Resistors; Temperature sensors; Thin film sensors; Thin film transistors; Tin;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05. The 13th International Conference on
Print_ISBN :
0-7803-8994-8
Type :
conf
DOI :
10.1109/SENSOR.2005.1497477
Filename :
1497477
Link To Document :
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