Incorporation of Fluorine onto Different Positions of Phenyl Substituted Benzo[1,2-b:4,5-b ']dithiophene Unit: Influence on Photovoltaic Properties

	Incorporation of Fluorine onto Different Positions of Phenyl Substituted Benzo[1,2-b:4,5-b ']dithiophene Unit: Influence on Photovoltaic Properties
	Yuan, Jun 1; Zou, Yingping 1,2; Cui, Ruth 1; Chao, Yi-Hsiang 3; Wang, Zaiyu 4; Ma, Mingchao 5; He, Yuehui ; Li, Yongfang 2,6; Rindgen, Amanda 7; Ma, Wei 4
刊名	MACROMOLECULES
	2015-07-14
卷号	48 期号:13 页码:4347-4356
英文摘要	We have designed and synthesized two low bandgap conjugated copolymers containing alternating meta-fluoro-p-alkoxyphenyl- (m-FPO-) or p-fluoro-m-alkoxyphenyl- (p-FPO-) substituted benzodithiophenes-co-benzooxadiazole (BO), named PBO-m-FPO and PBO-p-FPO. The properties, including UV-vis absorption, charge mobility and photovoltaic performance of the two polymers have been intensively investigated. The results indicated that the introduction of fluorine atom at m, p positions of phenyl substituted benzodithiophene unit hardly affected their absorption spectra and highest occupied molecular orbital (HOMO) level. However, the two polymers showed different photovoltaic properties. Power conversion efficiencies (PCEs) based on the device structure of ITO/PEDOT:PSS/polymer:PC71BM/Ca/Al demonstrated a large distinction (5.9% for PBO-m-FPO vs 2.8% for PBO-p-FPO) at optimal weight ratio. When replacing the Ca layer with zirconium acetylacetonate (ZrAcac), using 3% 1,8-diiodooctane (DIO) as the active layer additive, the PCEs of PBO-m-FPO and PBO-p-FPO increased by 36% (8.0% vs 5.9%) and 85% (5.1% vs 2.8%), respectively. The active layer's mobilities, morphology and molecular packing resulted in a significant difference in short-circuit current density (J(sc)) and fill factor (FF).
收录类别	SCI
语种	英语
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27827]
专题	化学研究所_有机固体实验室
作者单位	1.Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China 2.Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China 3.Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30010, Taiwan 4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China 5.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China 6.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China 7.Univ New Haven, Dept Chem & Chem Engn, West Haven, CT 06516 USA 8.Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Jun,Zou, Yingping,Cui, Ruth,et al. Incorporation of Fluorine onto Different Positions of Phenyl Substituted Benzo[1,2-b:4,5-b ']dithiophene Unit: Influence on Photovoltaic Properties[J]. MACROMOLECULES,2015,48(13):4347-4356.
APA	Yuan, Jun.,Zou, Yingping.,Cui, Ruth.,Chao, Yi-Hsiang.,Wang, Zaiyu.,...&Hsu, Chain-Shu.(2015).Incorporation of Fluorine onto Different Positions of Phenyl Substituted Benzo[1,2-b:4,5-b ']dithiophene Unit: Influence on Photovoltaic Properties.MACROMOLECULES,48(13),4347-4356.
MLA	Yuan, Jun,et al."Incorporation of Fluorine onto Different Positions of Phenyl Substituted Benzo[1,2-b:4,5-b ']dithiophene Unit: Influence on Photovoltaic Properties".MACROMOLECULES 48.13(2015):4347-4356.