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题名: Photocontrol of charge injection/extraction at electrode/semiconductor interfaces for high-photoresponsivity organic transistors
作者: Zhang, Hongtao1, 4, 5; Chen, Hongliang1; Ma, Wei2; Hui, Jingshu1; Meng, Sheng2; Xu, Wei3; Zhu, Daoben3; Guo, Xuefeng1
刊名: JOURNAL OF MATERIALS CHEMISTRY C
发表日期: 2016
卷: 4, 期:23, 页:5289-5296
收录类别: SCI
英文摘要: Charge injection typically occurring at the electrode/semiconductor interface in organic field-effect transistors (OFETs) is of great importance to the device performance and stability. Therefore, the chemical modulation of electrode/semiconductor heterojunctions provides a promising approach to enhance the performance and even incorporate new functionalities. In this study, we develop an efficient route for constructing optically switchable OFETs featuring a photochromic spirothiopyran (SP) self-assembled monolayer (SAM)-functionalized electrode/semiconductor interface. The photoisomerization of SPs induces a reversible change in the dipole moment of SP-SAMs, which affects the work function of gold electrodes. This change in the electrode work function enables the tuning of the contact resistance between organic semiconductors and metal electrodes. Consequently, the channel conductance of these devices is modulated in a nondestructive manner, thus leading to a new type of cost-effective OFET-based photodetector with high photosensitivity. These results help us to better understand interfacial phenomena and offer novel insights into developing a new generation of multifunctional interfaces and ultrasensitive OFET-based sensors by interface engineering.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35579
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Organ Solids, Beijing 100190, Peoples R China
4.Nankai Univ, Sch Mat Sci & Engn, State Key Lab, Tianjin 300071, Peoples R China
5.Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Inst Elementoorgan Chem, Tianjin 300071, Peoples R China
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