| Benzodithiophene-Based Polymers Containing Alkylthiophenyl Side Chains with Lowered HOMO Energy Levels for Organic Solar Cells | |
| Fan, Meijie1,2; Du, Zhengkun2; Chen, Weiye1,2; Liu, Deyu2; Wen, Shuguang2; Sun, Mingliang1; Yang, Renqiang2 | |
| 2016-10-01 | |
| Source Publication | ASIAN JOURNAL OF ORGANIC CHEMISTRY
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| Volume | 5Issue:10Pages:1273-1279 |
| Abstract | 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 %). |
| Subtype | Article |
| Keyword | Alkylthiophenyl Side Chain Benzodithiophene Homo Energy Levels Open-circuit Voltage Polymer Solar Cells |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1002/ajoc.201600244 |
| WOS Keyword | OPEN-CIRCUIT VOLTAGE ; PHOTOVOLTAIC PROPERTIES ; CONVERSION EFFICIENCY ; HIGH-PERFORMANCE ; A POLYMER ; QUINOXALINE ; ENHANCEMENT ; CONJUGATION ; COPOLYMERS ; BANDGAP |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry |
| Funding Organization | NSFC(21274134 ; 21202181 ; 51573205) |
| WOS Subject | Chemistry, Organic |
| WOS ID | WOS:000387750400015 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qibebt.ac.cn/handle/337004/9095 |
| Collection | 先进有机功能材料研究组 |
| Affiliation | 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 |
| Recommended Citation 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. |
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