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 | |
发表期刊 | JOURNAL OF MATERIALS CHEMISTRY C |
卷号 | 4期号:47页码:11088-11095 |
摘要 | 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%). |
文章类型 | Article |
WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
DOI | 10.1039/c6tc04203a |
关键词[WOS] | ORGANIC SOLAR-CELLS ; FIELD-EFFECT TRANSISTORS ; CONJUGATED POLYMERS ; HIGH-PERFORMANCE ; BACKBONE CURVATURE ; MORPHOLOGY CONTROL ; SOLID-STATE ; EFFICIENCY ; COPOLYMERS ; MOBILITY |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Materials Science ; Physics |
项目资助者 | NSFC(21274134 ; State Key Laboratory of Luminescent Materials and Devices(2016-skllmd-01) ; 51573205) |
WOS类目 | Materials Science, Multidisciplinary ; Physics, Applied |
WOS记录号 | WOS:000390725800010 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qibebt.ac.cn/handle/337004/9198 |
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, 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 |
推荐引用方式 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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