alexa Review : Use of Organic Semiconductor in Gas Sensing
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

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Research Article

Review : Use of Organic Semiconductor in Gas Sensing

Bornali Bora Patowary
Central Instiute of Technology, Kokrajhar, Assam, India.
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Abstract

The use of Organic Semiconductors as sensors has revolutionized modern technology in recent years due to their inherent capabilities. Organic Gas Sensors have been successfully developed in many applications to detect Humidity (both absolute and relative), various gases like Ammonia, Alcohol, Nitrogen Oxides, Chlorine, Hydrogen etc. and nitroaromatic compounds based explosive vapors. These research areas are gaining attention due to the fact that the organic semiconductors enable precise organic synthesis, low-temperature fabrication processes on variety of both rigid and flexible substrates, and straightforward miniaturization of their devices. A more appropriate selection of the optimal organic semiconductor is important by addressing the relationship of the surface chemistry of the sensor active material and its electrical response. In this article, the structural and electrical characteristics of several organic semiconductors are elaborated. Earlier works on organic gas sensors based on these active layers have been discussed. A review has been made on the past and recent works on OFETs/OTFTs for the sensing of humidity and gases like ammonia, formaldehyde, alcohol, nitrogen oxides and explosive vapors. Several breakthrough findings evolved are also being discussed.

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