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Issue 27, 2017
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Light-activated electric bistability for evaporated silver nanoparticles in organic field-effect transistors

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Abstract

Evaporated naked silver nanoparticles (Ag-NPs) were embedded in the isolated layer of PTB7-based organic field-effect transistors (OFETs), where their electric bistability behavior was successfully activated by photo-irradiation. These devices showed no obvious memory behavior in the dark; while under weak photo-irradiation (0.015 mW cm−2), 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 a stable charge state. The immobilized photo-generated electrons supplied an 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 allowed effective charge storage of the majority carriers, which increased the drain current and lowered the gate-operating voltage. This method is a novel approach to light-activated electric bistability based charge storage.

Graphical abstract: Light-activated electric bistability for evaporated silver nanoparticles in organic field-effect transistors

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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., 2017,19, 17653-17660
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    Light-activated electric bistability for evaporated silver nanoparticles in organic field-effect transistors

    T. Han, L. Liu, M. Wei, C. Wang, X. Wu, Z. Xie and Y. Ma, Phys. Chem. Chem. Phys., 2017, 19, 17653
    DOI: 10.1039/C7CP02589K

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