TITLE

Determining ionizing radiation using sensors based on organic semiconducting material

AUTHOR(S)
Raval, Harshil N.; Tiwari, Shree Prakash; Navan, Ramesh R.; Rao, V. Ramgopal
PUB. DATE
March 2009
SOURCE
Applied Physics Letters;3/23/2009, Vol. 94 Issue 12, p123304
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The use of organic semiconducting material sensors as total dose radiation detectors is proposed, wherein the change in conductivity of an organic material is measured as a function of ionizing radiation dose. The simplest sensor is a resistor made using organic semiconductor. Furthermore, for achieving higher sensitivity, organic field effect transistor (OFET) is used as a sensor. A solution processed organic semiconductor resistor and an OFET were fabricated using poly 3-hexylthiophene (P3HT), a p-type organic semiconductor material. The devices are exposed to Cobalt-60 radiation for different total dose values. The changes in electrical characteristics indicate the potential of these devices as radiation sensors.
ACCESSION #
37259557

 

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