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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
DOI10.1039/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
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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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