Publication Date:
2020
Description:
〈p〉Publication date: March 2020〈/p〉
〈p〉〈b〉Source:〈/b〉 Chemical Physics Letters, Volume 742〈/p〉
〈p〉Author(s): Qinyong Dai, Sunan Xu, Yingquan Peng, Wenli Lv, Lei Sun, Yi Wei〈/p〉
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〈h5〉Abstract〈/h5〉
〈div〉〈p〉We investigated anomalous photocurrent behavior in organic field-effect transistors(OFETs) based on C〈sub〉60〈/sub〉 thin film. With increasing incident optical power, it was interesting to observe the photocurrent decreases. The inverse photocurrent was mainly dependent on intensity of the light, not the wavelength. Meanwhile, this paper revealed that the main sources of the negative photocurrent were not the electrodes, channel and the interface effect but a distinct optoelectronic property of the C〈sub〉60〈/sub〉 material itself. Such mechanism of photocurrent may find potential applications in the future.〈/p〉〈/div〉
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〈div xml:lang="en"〉
〈h5〉Graphical abstract〈/h5〉
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〈p〉A simple device topology is presented in Fig. 1. The curve in Fig. 2 show that photocurrent tend to increase first, and then decrease with the increase of incident optical power. Furthermore, we confirm that the phenomenon of anomalous photocurrent is observed in devices with Au, Cu, Al and Ag electrode respectively, which indicates that the main sources of the anomalous photocurrent characteristics phenomenon is not the electrodes but a distinct optoelectronic property of the C〈sub〉60〈/sub〉 material itself. We clarify the phenomenon of anomalous photocurrent resulting from photoinduced denaturation. This mechanism of photocurrent make it possible to open new applications research based on C〈sub〉60〈/sub〉 thin film.〈/p〉
〈p〉〈figure〉〈img src="https://ars.els-cdn.com/content/image/1-s2.0-S0009261420300488-ga1.jpg" width="500" alt="Graphical abstract for this article" title=""〉〈/figure〉〈/p〉
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Print ISSN:
0009-2614
Electronic ISSN:
1873-4448
Topics:
Chemistry and Pharmacology
,
Physics
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