首页
最新动态 交流合作 科研项目 论文著作 精彩瞬间 招生招聘
  • 课题组最新工作被Macromolecules接收
  • 来源:乔文强教授个人网站 2015-06-09
  • Title: Optimization of Broad-Response and High-Detectivity Polymer Photodetectors by Bandgap Engineering of Weak Donor-Strong Acceptor Polymers

    Author(s): Qi, Ji; Han, Jinfeng; Zhou, Xiaokang; Yang, Dezhi; Zhang, Jidong; Qiao, Wenqiang; Ma, Dongge; Wang, Zhi Yuan


    A series of weak donor–strong acceptor polymers containing two different electron-deficient units (diketopyrrolopyrrole and thienoisoindigo) are synthesized and used in broad-response and high-detectivity polymer photodetectors. By adjusting the composition ratio of the two acceptors, the absorption spectra, energy levels, molecular stacking, and film morphology are affected, which in turn influence the photodetector performance. With increased thienoisoindigo component, the HOMO energy levels shift from ?5.41 to ?4.76 eV, and the LUMO energy levels are nearly unchanged, corresponding to reduced bandgaps and red-shifted absorption spectra. 1,8-Diiodooctane additive shows greatly impact on the film morphology, which affects the photodetector performance significantly. Going from P1 to P5, the detectivity decreases, but the response range increases. The photodetector based on P4exhibits detectivity of greater than 1011 Jones in a broad spectral region of 300–1200 nm, which is really promising for UV–vis–NIR light detection.





    http://pubs.acs.org/doi/abs/10.1021/acs.macromol.5b00859
  • [来源:中国聚合物网]
  • 了解更多请进入: 乔文强教授个人网站
相关新闻
  • · 课题组“宽谱化学发光体系及在成像中的应用”方面的研究工在新一期的RSC ADV上发表
  • · 课题组关于有机小分子探测器方面的研究工作发表在JPCC上
  • · 西北工业大学孔杰教授来课题组进行访问交流
  • · 课题组器件制备实验室正式启用

关于我们  |  联系我们  

网站:中国聚合物网

polymer.cn Copyright ©2017