Incorporation of Hexa-peri-hexabenzocoronene (HBC) into Carbazole-Benzo-2,1,3-thiadiazole Copolymers to Improve Hole Mobility and Photovoltaic Performance

	Incorporation of Hexa-peri-hexabenzocoronene (HBC) into Carbazole-Benzo-2,1,3-thiadiazole Copolymers to Improve Hole Mobility and Photovoltaic Performance
	Gao, Chen 1,2; Jiang, Pei 1; Shi, Keli 1; Ma, Di 1; Li, Yongfang 3; Yu, Gui 3; Li, Xiaoyu 2; Wang, Haiqiao 1,2
刊名	CHEMISTRY-AN ASIAN JOURNAL
	2016-03-04
卷号	11 期号:5 页码:766-774
关键词	C-C coupling conducting materials coronene electrochemistry polymers
英文摘要	Hexa-peri-hexabenzocoronene (HBC) is a discotic-shaped conjugated molecule with strong - stacking property, high intrinsic charge mobility, and good self-assembly properties. For a long time, however, organic photovoltaic (OPV) solar cells based on HBC demonstrated low power conversion efficiencies (PCEs). In this study, two conjugated terpolymers, poly[N-9-heptadecanyl-2,7-carbazole-alt-5,5-(4,7-di-2-thienyl-2,1,3-benzothiadiazole)] (PCDTBT)-5HBC and PCDTBT-10HBC, were synthesized by incorporating different amounts of HBC as the third component into poly[N-9-heptadecanyl-2,7-carbazole-alt-5,5-(4,7-di-2-thienyl-2,1,3-benzothiadiazole)] (PCDTBT) through Suzuki coupling polymerization. For comparison, the donor-acceptor (D-A) conjugated dipolymer PCDTBT was also synthesized to investigate the effect of HBC units on conjugated polymers. The HBC-containing polymers exhibited higher thermal stabilities, broader absorption spectra, and lower highest-occupied molecular orbital (HOMO) energy levels. In particular, the field-effect mobilities were enhanced by more than one order of magnitude after the incorporation of HBC into the conjugated polymer backbone on account of increased interchain - stacking interactions. The bulk heterojunction (BHJ) polymer solar cells (PSCs) fabricated with the polymers as donor and PC71BM as acceptor demonstrated gradual improvement of open-circuit voltage (V-OC) and short-circuit current (J(SC)) with the increase in HBC content. As a result, the PCEs were improved from 3.21% for PCDTBT to 3.78% for PCDTBT-5HBC and then to 4.20% for PCDTBT-10HBC.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35930]
专题	化学研究所_有机固体实验室
作者单位	1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 2.Beijing Univ Chem Technol, Key Lab Carbon Fiber & Funct Polymers, Minist Educ, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Gao, Chen,Jiang, Pei,Shi, Keli,et al. Incorporation of Hexa-peri-hexabenzocoronene (HBC) into Carbazole-Benzo-2,1,3-thiadiazole Copolymers to Improve Hole Mobility and Photovoltaic Performance[J]. CHEMISTRY-AN ASIAN JOURNAL,2016,11(5):766-774.
APA	Gao, Chen.,Jiang, Pei.,Shi, Keli.,Ma, Di.,Li, Yongfang.,...&Wang, Haiqiao.(2016).Incorporation of Hexa-peri-hexabenzocoronene (HBC) into Carbazole-Benzo-2,1,3-thiadiazole Copolymers to Improve Hole Mobility and Photovoltaic Performance.CHEMISTRY-AN ASIAN JOURNAL,11(5),766-774.
MLA	Gao, Chen,et al."Incorporation of Hexa-peri-hexabenzocoronene (HBC) into Carbazole-Benzo-2,1,3-thiadiazole Copolymers to Improve Hole Mobility and Photovoltaic Performance".CHEMISTRY-AN ASIAN JOURNAL 11.5(2016):766-774.