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: Enhancing the power conversion efficiency of polymer solar cells to 9.26% by a synergistic effect of fluor and carboxylate substitution
作者: Liu, Yahui1; Zhao, Wenchao2; Wu, Yang3; Zhang, Jicheng1; Li, Guangwu1; Li, Wenhua1; Ma, Wei3; Hou, Jianhui2; Bo, Zhishan1
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2016-06-07
卷: 4, 期:21, 页:8097-8104
收录类别: SCI
英文摘要: Two kinds of new conjugated polymers (P1 and P2) with benzothiadiazole as the acceptor unit and thiophene as the donor unit were designed, synthesized and used as donor Materials for polymer solar cells (PSCs). These polymers show a broad absorption in the visible region, a medium band gap of about 1.75 eV, and a tow-lying HOMO energy level of about -5.65 eV. The open-circuit voltage (V-oc) of both P1 and P2 was greatly improved to 0.85 V mainly due to the introduction of a carboxylate group at the 3-position of the thiophene spacer. Fluoro substitution on the polymer backbone of P2 can greatly enhance the interchain interaction, leading to a huge increase of short-circuit current density (J(sc)). P2-based devices with the active layer spin-coated from 1,2-diclorobenzene (DCB) solutions that contain 1% 1,8-diiodooctane (DIO) and washed with methanol showed a synergistic positive effect, resulting in a significant enhancement of the power conversion efficiency (PCE) up to 8.67%. The PCE could be further improved by constructing inverted devices and the best efficiency of 9.26% was finally obtained. In addition, the mechanism for achieving such a high PCE for P2 based devices was also proposed based on the morphological analysis of the blend films by atomic force microscopy (AFM), transmission electron microscopy (TEM), grazing incident angle X-ray scattering (GIWAXS) and resonant soft X-ray scattering (RSoXS). The improvement can be ascribed to the enhanced molecular packing and proper phase separation of the blend films and the reduced charge recombination.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35578
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.Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
3.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, 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
[Liu, Yahui]'s Articles
[Zhao, Wenchao]'s Articles
[Wu, Yang]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Liu, Yahui]‘s Articles
[Zhao, Wenchao]‘s Articles
[Wu, Yang]‘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