中国科学院化学研究所机构知识库
Advanced  
ICCAS OpenIR  > 高分子物理与化学实验室  > 期刊论文
题名: Effect of fluorination and symmetry on the properties of polymeric photovoltaic materials based on an asymmetric building block
作者: Wang, Xiaochen1; Tang, Ailing1; Chen, Yu1, 2; Mahmood, Asif1; Hou, Jianhui2; Wei, Zhixiang1; Zhou, Erjun1
刊名: RSC ADVANCES
发表日期: 2016
卷: 6, 期:93, 页:90051-90060
收录类别: SCI
英文摘要: Conjugated polymers based on an asymmetric dithieno[3,2-b: 2',3'-d] pyran (DTPa) donor and benzothiadiazole (BT), mono-fluorinated benzothiadiazole (fBT) or di-fluorinated benzothiadiazole (ffBT) acceptors were designed and synthesized. The introduction of fluorine substituents in the BT unit could not only enhance the electronegativity of the acceptors, but also change the symmetry of the BT derivatives, and thus affect the optical, electrochemical, and optoelectronic performance of the final polymers. With the increase of fluorine atoms in the BT unit, the peaks of the absorption spectra for these three polymers hypsochromic shift gradually, combined with the decrease of the HOMO energy levels. The asymmetric structure of fBT results in more complex multichromophore systems and consequently shows a broader absorption FWHM (full-width-at-half-maximum) of 229 nm in chloroform, as well as low absorption intensity and charge carrier mobility for polymer PDTPa-fBT. Finally, polymer solar cells based on these polymers demonstrate power conversion efficiency varying from 4.01% for PDTPa-BT to 3.70% for PDTPa-fBT and to 5.26% for PDTPa-ffBT. These results indicate that the symmetry of both electron-donating and electron-accepting building blocks in conjugated polymers could evidently influence the optical and photovoltaic properties, which might pave the way for the further development of novel photovoltaic polymers based on asymmetric building blocks.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35489
Appears in Collections:高分子物理与化学实验室_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wang, Xiaochen]'s Articles
[Tang, Ailing]'s Articles
[Chen, Yu]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wang, Xiaochen]‘s Articles
[Tang, Ailing]‘s Articles
[Chen, Yu]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院化学研究所 - Feedback
Powered by CSpace