| 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, Ning1 ; Chen, Weichao1; Shen, Wenfei1; Duan, Linrui1; Qiu, Meng1; Wang, Junyi1; Yang, Chunming2; Du, Zhengkun1; Yang, Renqiang1,3
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| 2016 | |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY A
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| Volume | 4Issue:26Pages:10212-10222 |
| Abstract | 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. |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1039/c6ta03709g |
| WOS Keyword | CONJUGATED SIDE-CHAIN ; OPEN-CIRCUIT VOLTAGE ; BAND-GAP POLYMERS ; PHOTOVOLTAIC PERFORMANCE ; FLUORINATED BENZOTHIADIAZOLE ; QUANTUM EFFICIENCY ; COPOLYMERS ; BENZODITHIOPHENE ; MORPHOLOGY ; AGGREGATION |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry ; Energy & Fuels ; Materials Science |
| Funding Organization | 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 Subject | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000378742100021 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qibebt.ac.cn/handle/337004/8354 |
| Collection | 先进有机功能材料研究组 |
| Affiliation | 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 |
| Recommended Citation 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. |
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