Oxygen-Induced Barrier Lowering for High-Performance Organic Field-Effect Transistors

Yao Fu; Jie Zhu; Yajing Sun; Shougang Sun; Kai Tie; Jiannan Qi; Yanpeng Wang; Zhongwu Wang; Yongxu Hu; Shuaishuai Ding; Rong Huang; Zhongmiao Gong; Yinan Huang; Xiaosong Chen; Liqiang Li; Wenping Hu

doi:10.1021/acsnano.3c04177

journal article·2023-08-08

Oxygen-Induced Barrier Lowering for High-Performance Organic Field-Effect Transistors

Yao Fu, Jie Zhu, Yajing Sun, Shougang Sun, Kai Tie, Jiannan Qi, Yanpeng Wang, Zhongwu Wang, Yongxu Hu, Shuaishuai Ding, Rong Huang, Zhongmiao Gong, Yinan Huang, Xiaosong Chen, Liqiang Li, Wenping Hu

ACS Nano· Volume 17· Issue 15

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Source abstract

Abstract

Organic field-effect transistors (OFETs) have the advantages of low-cost, large-area processing and could be utilized in a variety of emerging applications. However, the generally large contact resistance ( R c ) limits the integration and miniaturization of OFETs. The R c is difficult to reduce due to an incompatibility between obtaining strong orbit coupling and the barrier height reduction. In this study, we developed an oxygen-induced barrier lowering strategy by introducing oxygen (O 2 ) into the nanointerface between the electrodes and organic semiconductors layer and achieved an ultralow channel width-normalized R c ( R c · W ) of 89.8 Ω·cm and a high mobility of 11.32 cm 2 V –1 s –1 . This work demonstrates that O 2 adsorbed at the nanointerface of metal–semiconductor contact can significantly reduce the R c from both experiments and theoretical simulations and provides guidance for the construction of high-performance OFETs, which is conducive to the integration and miniaturization of OFETs.

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Research context

Nanomaterials Electronic materials

OpenAlex topics: Semiconductor materials and devices · Advanced Memory and Neural Computing · Advancements in Semiconductor Devices and Circuit Design

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Organic Integrated Circuits, Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin 300072, China

Vacuum Interconnected Nanotech Workstation (NANO-X), Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215125, China

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou 350207, China

Funding

Natural Science Foundation of Tianjin City · National Key Research and Development Program of China · National Natural Science Foundation of China · Haihe Laboratory of Sustainable Chemical Transformations

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