Novel donor-acceptor polymers containing o-fluoro-p-alkoxyphenyl-substituted benzo[1,2-b:4,5-b ']dithiophene units for polymer solar cells with power conversion efficiency exceeding 9%

doi:10.1039/c6ta03709g

QIBEBT-IR > 先进有机功能材料研究组

	Novel donor-acceptor polymers containing o-fluoro-p-alkoxyphenyl-substituted benzo[1,2-b:4,5-b ']dithiophene units for polymer solar cells with power conversion efficiency exceeding 9%
	Wang, Ning 1; Chen, Weichao1 ; Shen, Wenfei 1; Duan, Linrui 1; Qiu, Meng 1; Wang, Junyi 1; Yang, Chunming 2; Du, Zhengkun 1; Yang, Renqiang 1,3
	2016
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A
卷号	4 期号:26 页码:10212-10222
摘要	In this work, a new electron-rich building block, o-fluoro-p-alkoxyphenyl-substituted benzo[1,2-b:4,5-b'] dithiophene (BDT) unit, has been used to construct donor (D)-acceptor (A) conjugated copolymers with electron-deficient units 5,6-difluoro-4,7-di(4-(2-ethylhexyl)-2-thienyl)-2,1,3-benzothiadiazole (C8DTBTff) and 5,6-difluoro-4,7-di(4-hexyl-2-thienyl)-2,1,3-benzothiadiazole (C6DTBTff), named P-o-FBDTP-C8DTBTff (P2) and P-o-FBDTP-C6DTBTff (P3), respectively. The experimental results indicate that the incorporation of fluorine into the ortho-position of the alkoxyphenyl substituted BDT unit can enable its resultant polymer to efficiently tune the energy levels and improve the mobility of the derived bulk heterojunction layer, which results in a much higher power conversion efficiency (PCE) of P2 (8.10%). Moreover, replacing the 2-ethylhexyl chains on the DTBTff unit with hexyl chains can improve the planarity of the conjugated backbone of the polymer, which makes the P3/PC71BM blends exhibit higher carrier mobility than P2/PC71BM. Finally, a PCE of 9.02% for the device of P3 is obtained without any additive treatment, which is the highest value achieved for the widely reported D-A polymers with fluorine substituted BDT as the electron-donor unit in single junction polymer solar cells.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1039/c6ta03709g
关键词[WOS]	CONJUGATED SIDE-CHAIN ; OPEN-CIRCUIT VOLTAGE ; BAND-GAP POLYMERS ; PHOTOVOLTAIC PERFORMANCE ; FLUORINATED BENZOTHIADIAZOLE ; QUANTUM EFFICIENCY ; COPOLYMERS ; BENZODITHIOPHENE ; MORPHOLOGY ; AGGREGATION
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
项目资助者	National Natural Science Foundation of China(21204097 ; Ministry of Science and Technology of China(2014CB643501 ; Qingdao Municipal Science and Technology Program(14-2-4-28-jch) ; 21274161 ; 2010DFA52310) ; 51173199 ; 51573205 ; 61405209)
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000378742100021
引用统计	被引频次：51[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/8354
专题	先进有机功能材料研究组
作者单位	1.Chinese Acad Sci, CAS Key Lab Biobased Mat, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 3.S China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ning,Chen, Weichao,Shen, Wenfei,et al. Novel donor-acceptor polymers containing o-fluoro-p-alkoxyphenyl-substituted benzo[1,2-b:4,5-b ']dithiophene units for polymer solar cells with power conversion efficiency exceeding 9%[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(26):10212-10222.
APA	Wang, Ning.,Chen, Weichao.,Shen, Wenfei.,Duan, Linrui.,Qiu, Meng.,...&Yang, Renqiang.(2016).Novel donor-acceptor polymers containing o-fluoro-p-alkoxyphenyl-substituted benzo[1,2-b:4,5-b ']dithiophene units for polymer solar cells with power conversion efficiency exceeding 9%.JOURNAL OF MATERIALS CHEMISTRY A,4(26),10212-10222.
MLA	Wang, Ning,et al."Novel donor-acceptor polymers containing o-fluoro-p-alkoxyphenyl-substituted benzo[1,2-b:4,5-b ']dithiophene units for polymer solar cells with power conversion efficiency exceeding 9%".JOURNAL OF MATERIALS CHEMISTRY A 4.26(2016):10212-10222.