期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 20, 页码 23709-23716出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c02977
关键词
organic field-effect transistors; organic doping; organic semiconductors; traps; threshold voltages
资金
- National Natural Science Foundation of China [51873172, 21973072, 51907148]
- China Postdoctoral Science Foundation [2018M643648]
- Fundamental Research Funds for the Central Universities [xjh012019023]
- Key Scientific and Technological Innovation Team Project of Shaanxi Province [2021GXLH-Z-055]
This study investigated the influence of a novel soluble molecular dopant, CN6-CP, on the performance optimization of OFETs. The results showed that doping with CN6-CP significantly improved the field-effect mobility of OFETs and enabled wide tunability of the threshold voltage, demonstrating great potential for organic electronic applications.
Organic field-effect transistors (OFETs) are attractive for next-generation electronics, while doping plays an important role in their performance optimization. In this work, a soluble molecular dopant with high electron affinity, CN6-CP, is investigated to manipulate the performance of OFETs with a p-type organic semiconductor as the transport layer. The performance of the model 2,7-didodecyl[1]benzothieno[3,2-b][1]benzothiophene (C12-BTBT) bottom-gate top-contact (BGTC) OFETs is greatly optimized upon doping by CN6-CP, and the field-effect mobility is improved from 5.5 to 11.1 cm(2) V-1 s(-1), with a widely tunable threshold voltage from -40 to +5 V. Improvements in performance also appear in CN6-CP doped BGBC OFETs. As compared with commonly used molecular dopant F4-TCNQ, CN6-CP exhibits excellent doping effects and great potential for organic electronic applications.
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