Toward chemical logic with electrolyte-gated graphene-based transistors

IF 5.5 3区 材料科学 Q1 ELECTROCHEMISTRY
Rassen Boukraa, Benoît Piro, Nicolas Battaglini
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Abstract

While the usual complementary inverter is composed of a pair of n-type and p-type field-effect transistors, we show that a functional inverter can be made out of p-doped reduced graphene oxide (rGO) transistors, operating in the electrolyte-gated configuration. We developed such devices on flexible polyimide substrates, from the deposition of a water-based home-made formulation of graphene oxide (GO). GO was furtherly turned into rGO by an in situ electroreduction step, able to tune the doping level of the material. We explored the experimental key parameters that control the electrical features of single rGO-transistors involved in the inverter, especially the interplay between gate and drain voltages and we developed a numerical toy-model in order to have a better understanding on the electric behavior of our ambipolar rGO-based inverters. Through the functionalization of the device's channel with a potassium ionophore III membrane, we show the proof of concept of an original rGO-based ion sensor able to detect a certain ion concentration threshold in aqueous media, with a direct numerical or voltage readout method, which is conforming to the emerging field of Chemical Logic, and that is less resources-consuming regarding the integration of such sensors in electronic circuits.

Abstract Image

Abstract Image

电解门控石墨烯基晶体管的化学逻辑研究
虽然通常的互补逆变器由一对n型和p型场效应晶体管组成,但我们表明,功能逆变器可以由p掺杂的还原氧化石墨烯(rGO)晶体管制成,在电解质门控配置下工作。我们在柔性聚酰亚胺衬底上开发了这种装置,通过沉积水基自制氧化石墨烯(GO)配方。通过原位电还原步骤将氧化石墨烯进一步转化为还原氧化石墨烯,从而可以调整材料的掺杂水平。我们探索了控制逆变器中涉及的单个rgo晶体管电特性的实验关键参数,特别是栅极和漏极电压之间的相互作用,我们开发了一个数值玩具模型,以便更好地理解我们基于双极rgo的逆变器的电行为。通过使用钾离子载体III膜对设备通道进行功能化,我们展示了一种原始的基于rgo的离子传感器的概念证明,该传感器能够通过直接数值或电压读出方法检测水介质中特定的离子浓度阈值,这符合新兴的化学逻辑领域,并且在电子电路中集成此类传感器时消耗的资源较少。
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来源期刊
Electrochimica Acta
Electrochimica Acta 工程技术-电化学
CiteScore
11.30
自引率
6.10%
发文量
1634
审稿时长
41 days
期刊介绍: Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.
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