Carbon nanotube-based van der Waals heterojunction electrodes for high-performance intrinsically stretchable organic photoelectric transistors
| Autor: | Junhua Kuang, Qingyuan Li, Wei Shi, Zhiheng Zhu, Yangshuang Bian, Xin Huang, Yanwei Liu, Yunqi Liu, Zhiyuan Zhao, Kai Liu, Yunlong Guo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Electron mobility
Materials science Science (General) Polymers and Plastics Carbon nanotubes Stretchable organic field-effect transistor Carbon nanotube law.invention Pentacene symbols.namesake chemistry.chemical_compound Q1-390 law Materials Chemistry Heterojunction electrode van der Waals contact business.industry Heterojunction General Chemistry Subthreshold slope Surfaces Coatings and Films Organic semiconductor Semiconductor chemistry symbols Stretchable organic phototransistor Optoelectronics van der Waals force business |
| Zdroj: | Giant, Vol 7, Iss, Pp 100060-(2021) |
| ISSN: | 2666-5425 |
| Popis: | Intrinsically stretchable organic field-effect transistors (STOFETs) that behave much like skin, have garnered widespread attention and demonstrated potential to more comfortable wearing electronics. Despite considerable efforts being exerted in stretchable hybrid polymeric semiconductors to achieve high-mobility and high-stretchability STOFETs, carbon nanotubes (CNTs) as ideal electrode materials, its interfacial quality seldom attracts research interests. Herein, we demonstrate a novel and general strategy on flexible CNT-based heterojunction electrodes by pentacene modification layer to enable high-performance and functional STOFETs. Pentacene transition layer can reduce the surface roughness and tune the heterogeneity of functional groups on the CNT thin film, as well as enhance the compatibility and van der Waals contact between CNT electrodes and organic semiconductors. The experimental results reveal that the carrier mobility of the resulting STOFETs increases by 2-3 times and the subthreshold slope decreases by 5 times compared with unmodified devices. The on-current/off-current ratio reaches nearly 107, which is approximately 1000 times as high as unmodified devices, and the highest value for stretchable organic transistors reported so far. Furthermore, STOFETs with heterojunction electrodes demonstrate better performance homogeneity and higher strain-independent capability. Noteworthy, these are the first intrinsically stretchable organic phototransistors (STOPTs) with superior photoswitching performances and high strain tolerance developed. |
| Databáze: | OpenAIRE |
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