Impact of Al/Ti Electrodes on the Performance and Operational Stability of n-Channel Solution-Processed Solid-State Electrolyte-Gated Transistors: Applications in Reservoir Computing

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Advanced Electronic Materials Pub Date : 2025-03-30 DOI:10.1002/aelm.202500038

Quanhua Chen, Xiang Wan, Walid Boukhili, Jie Yan, Hong Zhu, Lijian Chen, Chee Leong Tan, Zhihao Yu, Huabin Sun, Yong Xu, Dongyoon Khim

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Abstract

The impact of Al/Ti electrodes on enhancing the performance and operational stability of n-channel organic electrolyte-gated transistors (OEGTs) is investigated. Utilizing Al/Ti electrodes as source and drain electrodes in diketopyrrolopyrrole (DPP)-based polymeric semiconductor OEGTs leads to a significant decrease in the charge injection barrier for electrons, resulting in improvement of all electrical parameters including on-current, mobility, on-off ratio, and threshold voltages. Furthermore, through a comparative analysis of transistors utilizing polymer insulators and solid electrolytes as gate dielectrics, the effect of alterations in the electrodes on the contact resistance of each device is examined. In comparison to OEGTs with Au electrodes, OEGTs with Al/Ti electrodes demonstrate higher operational stability following multiple cycling tests. Finally, the OEGTs produced in this study demonstrate reliable short-term memory characteristics, which are subsequently utilized for reservoir computing, achieving a high recognition accuracy of 94% for spoken digits.

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来源期刊

Advanced Electronic Materials NANOSCIENCE & NANOTECHNOLOGYMATERIALS SCIE-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

11.00

自引率

3.20%

发文量

433

期刊介绍： Advanced Electronic Materials is an interdisciplinary forum for peer-reviewed, high-quality, high-impact research in the fields of materials science, physics, and engineering of electronic and magnetic materials. It includes research on physics and physical properties of electronic and magnetic materials, spintronics, electronics, device physics and engineering, micro- and nano-electromechanical systems, and organic electronics, in addition to fundamental research.