Correlation between Ion and Charge Transport Mechanism according to Time through Organic Electrochemical Transistor
발표자
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초록
내용
Electrochemical doping with an organic electrochemical transistor (OECT) has the advantage of being able to control the doping level. In our previous work, TE properties of poly[(2,5-bis(2-hexyldecyloxy)phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2 yl)benzo[c][1,2,5]thiadiazole)] (PPDT2FBT) polymers were analyzed through OECT. Interestingly, we confirmed a phenomenon in which the Seebeck coefficient (S) changes significantly at high doping levels. It is already reported that ion exhibits a TE effect as a Soret effect due to a temperature difference. However, there is a lack of research confirming the TE effect of ions through OECT. In this work, we measure the TE effect of PPDT2FBT according to each doping level, depending on time. The voltages represented by ion and charge differ depending on the time in temperature difference. Finally, our work distinguishes TE effects due to ion and charge, and we can confirm the correlation between ion and charge transport according to the degree of doping can be investigated.