高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (1): 102.doi: 10.7503/cjcu20170377

• 物理化学 • 上一篇    下一篇

基于表面等离子共振效应的有机光敏晶体管

张婵婵1,2, 张方辉1(), 丁磊1(), 倪振杰3, 江浪3, 董焕丽3, 张小涛2, 李荣金2, 胡文平2   

  1. 1. 陕西科技大学电气与信息工程学院, 陕西省平板显示技术工程研究中心, 西安 710021
    2. 天津大学理学院化学系, 天津市分子光电科学重点实验室, 天津 300072
    3. 中国科学院化学研究所, 北京分子科学国家实验室有机固体研究室, 北京 100190
  • 收稿日期:2017-06-12 出版日期:2018-01-10 发布日期:2017-12-04
  • 作者简介:联系人简介: 张方辉, 男, 博士, 教授, 主要从事有机电致发光器件和LED研究. E-mail:zhangfanghui@sust.edu.cn; 丁 磊, 男, 博士, 副教授, 主要从事有机电子学研究. E-mail:dinglei@sust.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 61674116)、 国家重点研究发展计划(批准号: 2016YFA0202300)和陕西省自然科学基金(批准号: 2016JQ6022)资助

Organic Phototransistor Based on Surface Plasmon Resonance Effect

ZHANG Chanchan1,2, ZHANG Fanghui1,*(), DING Lei1,*(), NI Zhenjie3, JIANG Lang3, DONG Huanli3, ZHANG Xiaotao2, LI Rongjin2, HU Wenping2   

  1. 1. College of Electrical and Information Engineering, Shaanxi Province Flat Panel Display Technology Engineering Research Center, Shaanxi University of Science & Technology, Xi'an 710021, China
    2. Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
    3. Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2017-06-12 Online:2018-01-10 Published:2017-12-04
  • Contact: ZHANG Fanghui,DING Lei E-mail:zhangfanghui@sust.edu.cn;dinglei@sust.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.61674116), the National Key Basic Research Program of China(No.2016YFA0202300) and the Natural Science Foundation of Shaanxi Province, China(No.2016JQ6022)

摘要:

通过原位制备金纳米颗粒, 利用表面等离子共振效应, 在金纳米颗粒表面旋涂无可见光响应的聚合物获得了同时具有高迁移率(0.12 cm2·V-1·s-1)和高响应度(11.6 A/W)的有机光敏晶体管. 金纳米颗粒表面的化学修饰对提高器件性能起到关键作用. 基于表面等离子共振效应建立了一种利用无可见光响应(或弱可见光响应)有机半导体获得高性能有机光敏晶体管的方法.

关键词: 金纳米颗粒, 表面等离子共振, 有机光敏晶体管, 光响应

Abstract:

Photoresponsive organic field-effect transistors(PhotOFET) require materials with high mobility, high absorbance and high exciton dissociation efficiency. Although great efforts have been made to realize high performance PhotOFET using various organic small molecules and polymeric semiconductors, both the responsivity and mobility were still low based on pristine materials. In this work, gold nanoparticles(Au NPs) were incorporated into the semiconductor layer of OFET. Owing to the surface plasmon effect of the Au NPs, the absorbance of the semiconductor could be greatly increased and high-performance PhotOFET were realized. Au NPs were prepared in situ on the substrates and used to fabricate PhotOFET directly. By utilizing the surface plasmon resonance effect of the Au NPs, high performance PhotOFET with a mobility of 0.12 cm2·V-1·s-1 and a responsivity of 11.6 A/W was obtained based on the materials without photoresponse in the visible spectrum. The surface chemical modification of gold nanoparticles with alkane thiol played a key role in improving the device performance. The device structure proposed here, i. e. the incorporation of Au NPs into the semiconductor layer of OFETs, provided an effective method for the construction of high performance PhotOFET based on common organic semiconductors.

Key words: Gold nanoparticles, Surface plasma resonance, Organic phototransistor, Photoresponse

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