| Comparative study of the conformational effect of dithienothiophene- and terthiophene-based photovoltaic polymers | |
| Ren, Junzhen1; Chen, Weiye1; Zhang, Yongchao2; Qiu, Meng2; Ren, Jing1; Zhu, Tingting1; Liu, Fushuai1; Sun, Mingliang1,3; Yang, Rendiang2 | |
| 2016-12-21 | |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY C
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| Volume | 4Issue:47Pages:11088-11095 |
| Abstract | The conformational change of the polymer backbone has an obvious influence on the blended film morphology and the photovoltaic properties. A planar polymer backbone can provide strong intermolecular interaction, but excessive self-aggregation usually disadvantages a favorable film morphology. Here, a dithienothiophene (DTT) unit and a terthiophene (T3) unit were introduced to construct a pair of new conjugated polymers, PDTT-DTBT and PT3-DTBT, respectively, to investigate the correlation between the conformation of the polymer backbone and the photovoltaic properties. The highly planar structure of the DTT unit made PDTT-DTBT exhibit a stronger molecular aggregation than PT3-DTBT. Compared to the DTT unit, the T3 unit changed the molecular structure from fused thiophenes to linked ones, which relaxed the rigidity of the polymer backbone and reduced the degree of polymer self-aggregation, and a more suitable blended film morphology was formed. Due to the weaker electron-donating ability of the DTT unit, PDTT-DTBT/PC71BM-based devices showed a higher open circuit voltage (V-oc) of 0.75 V, and a power conversion efficiency (PCE) of 8.01% was obtained with a short-circuit current (J(sc)) of 14.85 mA cm(-2) and a filled factor (FF) of 71.62%. This PCE value was slightly higher than for PT3-DTBT/PC71BM-based devices, which exhibited a PCE of 7.68% (along with a V-oc of 0.66 V, a J(sc) of 16.62 mA cm(-2) and a FF of 69.69%). |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology ; Physical Sciences |
| DOI | 10.1039/c6tc04203a |
| WOS Keyword | ORGANIC SOLAR-CELLS ; FIELD-EFFECT TRANSISTORS ; CONJUGATED POLYMERS ; HIGH-PERFORMANCE ; BACKBONE CURVATURE ; MORPHOLOGY CONTROL ; SOLID-STATE ; EFFICIENCY ; COPOLYMERS ; MOBILITY |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Physics |
| Funding Organization | NSFC(21274134 ; State Key Laboratory of Luminescent Materials and Devices(2016-skllmd-01) ; 51573205) |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000390725800010 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qibebt.ac.cn/handle/337004/9198 |
| 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, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China 3.South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China |
| Recommended Citation GB/T 7714 | Ren, Junzhen,Chen, Weiye,Zhang, Yongchao,et al. Comparative study of the conformational effect of dithienothiophene- and terthiophene-based photovoltaic polymers[J]. JOURNAL OF MATERIALS CHEMISTRY C,2016,4(47):11088-11095. |
| APA | Ren, Junzhen.,Chen, Weiye.,Zhang, Yongchao.,Qiu, Meng.,Ren, Jing.,...&Yang, Rendiang.(2016).Comparative study of the conformational effect of dithienothiophene- and terthiophene-based photovoltaic polymers.JOURNAL OF MATERIALS CHEMISTRY C,4(47),11088-11095. |
| MLA | Ren, Junzhen,et al."Comparative study of the conformational effect of dithienothiophene- and terthiophene-based photovoltaic polymers".JOURNAL OF MATERIALS CHEMISTRY C 4.47(2016):11088-11095. |
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