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http://dx.doi.org/10.7473/EC.2021.56.4.250

Effect of Doping State on Photoresponse Properties of Polypyrrole  

Choi, Jongwan (Department of Chemistry and Life Science, Sahmyook University)
Publication Information
Elastomers and Composites / v.56, no.4, 2021 , pp. 250-253 More about this Journal
Abstract
Polypyrrole is an organic thermoelectric material which has been receiving extensive attention in recent years. Polypyrrole is applicable in various fields because its electrical properties are controllable by its doping concentration. In this study, the effects of the polypyrrole doping state on its photoresponse were investigated. The degree of doping was controlled by ammonia solution treatment. Then, the chemical structure as a function of the doping states was observed by Raman analysis. Moreover, the photocurrent and photovoltage characteristics for various doping states were measured by an asymmetrically irradiated light source. As the degree of doping increased, the electrical conductivity increased, which affected the photocurrent. Meanwhile, the photovoltage was related to the temperature gradient caused by light irradiation.
Keywords
polypyrrole; doping state; photothermoelectric; photoresponse;
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