Benzodithiophene-Based Polymers Containing Alkylthiophenyl Side Chains with Lowered HOMO Energy Levels for Organic Solar Cells

doi:10.1002/ajoc.201600244

QIBEBT-IR > 先进有机功能材料研究组

	Benzodithiophene-Based Polymers Containing Alkylthiophenyl Side Chains with Lowered HOMO Energy Levels for Organic Solar Cells
	Fan, Meijie 1,2; Du, Zhengkun 2; Chen, Weiye 1,2; Liu, Deyu 2; Wen, Shuguang 2; Sun, Mingliang 1; Yang, Renqiang 2
	2016-10-01
发表期刊	ASIAN JOURNAL OF ORGANIC CHEMISTRY
卷号	5 期号:10 页码:1273-1279
摘要	In this paper, a novel donor based on alkylthiophenyl side-chained benzodithiophene (BDT) (M1) was first designed and synthesized to construct a series of conjugated polymers (P1, P2, P3) used in polymer solar cells (PSCs). P1, P2, and P3 were prepared by copolymerizing M1 with 4,7-di(4-(2-ethylhexyl)-2-thienyl)-2,1,3-benzothiadiazole (DTBT), quinoxaline, and diketopyrrolopyrrole (DPP), respectively. The optical electrochemical and photovoltaic properties of these polymers were investigated. Alkylthiophenyl substitution on the BDT building block is favorable for the low-lying highest occupied orbital (HOMO) level of polymers. The HOMO of these copolymers is clearly lowered to -5.49 eV, -5.34 eV, and -5.50 eV, respectively. Compared with reference polymers, our polymers show lowered HOMO energy levels (by 0.14 eV at least). This is very helpful to enhance the open-circuit voltage (V-oc) of the devices. Further, P2:PC61BM exhibited an optimized power conversion efficiency (PCE) of 4.28 %, which is clearly higher than that of P1 (1.48%) and P3 (1.9 %).
文章类型	Article
关键词	Alkylthiophenyl Side Chain Benzodithiophene Homo Energy Levels Open-circuit Voltage Polymer Solar Cells
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1002/ajoc.201600244
关键词[WOS]	OPEN-CIRCUIT VOLTAGE ; PHOTOVOLTAIC PROPERTIES ; CONVERSION EFFICIENCY ; HIGH-PERFORMANCE ; A POLYMER ; QUINOXALINE ; ENHANCEMENT ; CONJUGATION ; COPOLYMERS ; BANDGAP
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
项目资助者	NSFC(21274134 ; 21202181 ; 51573205)
WOS类目	Chemistry, Organic
WOS记录号	WOS:000387750400015
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/9095
专题	先进有机功能材料研究组
作者单位	1.Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Biobased Mat, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Fan, Meijie,Du, Zhengkun,Chen, Weiye,et al. Benzodithiophene-Based Polymers Containing Alkylthiophenyl Side Chains with Lowered HOMO Energy Levels for Organic Solar Cells[J]. ASIAN JOURNAL OF ORGANIC CHEMISTRY,2016,5(10):1273-1279.
APA	Fan, Meijie.,Du, Zhengkun.,Chen, Weiye.,Liu, Deyu.,Wen, Shuguang.,...&Yang, Renqiang.(2016).Benzodithiophene-Based Polymers Containing Alkylthiophenyl Side Chains with Lowered HOMO Energy Levels for Organic Solar Cells.ASIAN JOURNAL OF ORGANIC CHEMISTRY,5(10),1273-1279.
MLA	Fan, Meijie,et al."Benzodithiophene-Based Polymers Containing Alkylthiophenyl Side Chains with Lowered HOMO Energy Levels for Organic Solar Cells".ASIAN JOURNAL OF ORGANIC CHEMISTRY 5.10(2016):1273-1279.