Polymer Solar Cells: Solubility Controls Fiber Network Formation
文献类型：期刊论文
| 作者 | van Franeker, Jacobus J.1,2,3; Heintges, Gael H. L.1,2; Schaefer, Charley3,4; Portale, Giuseppe5; Li, Weiwei6; Wienk, Martijn M.1,2,7; van der Schoot, Paul4; Janssen, Rene A. J.1,2,7 |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2015-09-16 |
| 卷号 | 137期号:36页码:11783-11794 |
| 英文摘要 | The photoactive layer of polymer solar cells is commonly processed from a four-component solution, containing a semiconducting polymer and a fullerene derivative dissolved in a solvent cosolvent mixture. The nanoscale dimensions of the polymer fullerene morphology that is formed upon drying determines the solar cell performance, but the fundamental processes that govern the size of the phase-separated polymer and fullerene domains are poorly understood. Here, we investigate morphology formation of an alternating copolymer of diketopyrrolopyrrole and a thiophene-phenyl-thiophene oligomer (PDPPTPT) with relatively long 2-decyltetradecyl (DT) side chains blended with [6,6]-phenyl-C-71-butyric acid methyl ester. During solvent evaporation the polymer crystallizes into a fibrous network. The typical width of these fibers is analyzed by quantification of transmission electron microscopic images, and is mainly determined by the solubility of the polymer in the cosolvent and the molecular weight of the polymer. A higher molecular weight corresponds to a lower solubility and film processing results in a smaller fiber width. Surprisingly, the fiber width is not related to the drying rate or the amount of cosolvent. We have made solar cells with fiber widths ranging from 28 to 68 nm and found an inverse relation between fiber width and photocurrent. Finally, by mixing two cosolvents, we develop a ternary solvent system to tune the fiber width. We propose a model based on nucleation-and-growth which can explain these measurements. Our results show that the width of the semicrystalline polymer fibers is not the result of a frozen dynamical state, but determined by the nucleation induced by the polymer solubility. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/28417]  |
| 专题 | 化学研究所_有机固体实验室 |
| 作者单位 | 1.Eindhoven Univ Technol, Mol Mat & Nanosyst, NL-5600 MB Eindhoven, Netherlands 2.Eindhoven Univ Technol, Inst Complex Mol Syst, NL-5600 MB Eindhoven, Netherlands 3.DPI, NL-5600 AX Eindhoven, Netherlands 4.Eindhoven Univ Technol, Theory Polymers & Soft Matter, NL-5600 MB Eindhoven, Netherlands 5.Netherlands Org Sci Res NWO, DUBBLE CRC ESRF BM26, F-38000 Grenoble, France 6.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 7.Dutch Inst Fundamental Energy Res, NL-5612 AJ Eindhoven, Netherlands |
| 推荐引用方式 GB/T 7714 | van Franeker, Jacobus J.,Heintges, Gael H. L.,Schaefer, Charley,et al. Polymer Solar Cells: Solubility Controls Fiber Network Formation[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2015,137(36):11783-11794. |
| APA | van Franeker, Jacobus J..,Heintges, Gael H. L..,Schaefer, Charley.,Portale, Giuseppe.,Li, Weiwei.,...&Janssen, Rene A. J..(2015).Polymer Solar Cells: Solubility Controls Fiber Network Formation.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,137(36),11783-11794. |
| MLA | van Franeker, Jacobus J.,et al."Polymer Solar Cells: Solubility Controls Fiber Network Formation".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 137.36(2015):11783-11794. |
入库方式： OAI收割
来源：化学研究所
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