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Polymer Based Photodetectors

Published online by Cambridge University Press:  17 March 2011

K. S. Narayan
Affiliation:
Chemistry and Physics of Material Unit Jawaharlal Nehru Center for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
D. Kabra
Affiliation:
Chemistry and Physics of Material Unit Jawaharlal Nehru Center for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
S. Dutta
Affiliation:
Chemistry and Physics of Material Unit Jawaharlal Nehru Center for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
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Abstract

Recent developments in our laboratory related to polymer-based light sensors are reviewed. The inherent processibility of the active polymer medium is utilized in the implementation of different designs for the opto-electronic applications. The utility of these devices as sensitive photodetectors, image sensors and position sensitive detectors is demonstrated. The schottky-type layer formation at interfaces of polymers such as polyalkylthiophenes and aluminum accompanied by the enhanced photo-induced charge separation due to high local electric field is tapped for some of these device structures. The sensitivity of polymer-based field effect transistors to light also provides a convenient lateral geometry for efficient optical-coupling and control of the transistor state. The range of these polymer-detectors available with the option of operating in the diode and transistor modes should be an attractive feature for many potential applications.

Type
Research Article
Copyright
Copyright © Materials Research Society 2004

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