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Issue 29, 2017
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Graphene as an electrode for solution-processed electron-transporting organic transistors

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Abstract

Organic field-effect transistors (OFETs) are fundamental building blocks for plastic electronics such as organic photovoltaics or bendable displays with organic light emitting diodes, and radio-frequency identification (RFID) tags. A key part in the performance of OFET is the organic material constituting the channel. OFETs based on solution-processed polymers represent a new class of organic electronic devices. Recent developments in upscale solution-processed polymers have advanced towards high throughput, low-cost, and environmentally friendly materials for high-performance applications. Together with the integration of high performance materials, another enduring challenge in OFET development is the improvement and control of the injection of charge carriers. Graphene, a two-dimensional layer of covalently bonded carbon atoms, is steadily making progress into applications relying on van der Waals heterointerfaces with organic semiconductors. Here, we demonstrate the versatile operation of solution-processed organic transistors both in lateral and vertical geometries by exploiting the weak-screening effect and work function modulation properties of graphene electrodes. Our results demonstrate a general strategy for overcoming traditional noble metal electrodes and to integrate graphene with solution-processed Polyera ActiveInk™ N2200 polymer transistors for high-performance devices suitable for future plastic electronics.

Graphical abstract: Graphene as an electrode for solution-processed electron-transporting organic transistors

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Supplementary files

Article information


Submitted
10 Feb 2017
Accepted
23 Apr 2017
First published
25 Apr 2017

Nanoscale, 2017,9, 10178-10185
Article type
Paper

Graphene as an electrode for solution-processed electron-transporting organic transistors

S. Parui, M. Ribeiro, A. Atxabal, R. Llopis, F. Casanova and L. E. Hueso, Nanoscale, 2017, 9, 10178
DOI: 10.1039/C7NR01007A

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