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Light-Activated Electric Bistability for Evaporated Silver Nanoparticles in Organic Field-Effect Transistor

Abstract

Evaporated naked silver nanoparticles (Ag-NPs) were embedded in the isolated layer of PTB7-based organic field-effect transistor (OFETs), where the electric bistability behavior was successfully activated by photo-irradiation. These devices showed no obvious memory behavior in dark; while under weak photo-irradiation (0.015 mW/cm2), memory windows of 12.5 - 35 V have been achieved. Different operation modes have been designed to exhibit the memory behavior and to explore the origin of the formation of stable charge state. The immobilized photo-generated electrons supplied additional photo-generated electric field, which confined the trapped charge in the charge storage media after the gate voltage and photo-irradiation being removed. The photo-irradiation created more charges at the interface and the presence of Ag-NPs makes effective charge storage of majority carrier which increased the drain current and lowered the gate operating voltage. This method shows a novel approach to light-activated electric bistability based charge storage.

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Publication details

The article was received on 20 Apr 2017, accepted on 14 Jun 2017 and first published on 14 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP02589K
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Light-Activated Electric Bistability for Evaporated Silver Nanoparticles in Organic Field-Effect Transistor

    T. Han, L. Liu, M. Wei, C. Wang, X. Wu, Z. Xie and Y. Ma, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP02589K

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