Achieving balanced intermixed and pure crystalline phases in PDI-based non-fullerene organic solar cells via selective solvent additives
文献类型：期刊论文
| 作者 | Li, Mingguang1,2; Liu, Jiangang1,2; Cao, Xinxiu1,2; Zhou, Ke1,2; Zhao, Qiaoqiao1,2; Yu, Xinhong1,2; Xing, Rubo1,2; Han, Yanchun1,2 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 16期号:48页码:26917-26928 |
| ISSN号 | 1463-9076 |
| DOI | 10.1039/c4cp04161e |
| 英文摘要 | Herein, balanced intermixed and pure crystalline phases in N,N'-bis(1-ethylpropyl)-perylene-3,4,9,10-tetracarboxylic diimide (EP-PDI)-based non-fullerene organic solar cells (OSCs) were achieved via selective solvent additives (SAs). Poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b: 4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7) and 7,7'-(4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b']dithiophene-2,6-diyl)bis(6-fluoro-4-(5'-hexyl-[2,2'-bithiophen]-5-yl)benzo[c][1,2,5]thiadiazole) (F-DTS) possessing different compatibilities with EP-PDI were selected as model systems to investigate the guideline of SAs selection for different non-fullerene-based systems. According to the solubility parameter difference (Delta delta) between EP-PDI and SAs, five different SAs were divided into two types: (I) strong intermolecular interactions with EP-PDI molecules (with Delta delta values less than 5 MPa1/2), (II) weak intermolecular interactions with EP-PDI molecules (with large Delta delta values). For PTB7: EP-PDI system with large and obvious phase separation, the introduction of type (II) SAs provided extra interactions with EP-PDI molecules, thus effectively reducing EP-PDI aggregate domains and increasing intermixed fractions. The incorporation of type (II) SAs resulted in a greater yield of dissociated polarons, and the final device efficiency increased from 0.02% to 1.65%. On the contrary, for finely mixed F-DTS: EP-PDI systems, type (I) SAs were considerably more effective because of the fact that the required pure crystalline phases were readily induced by the unfavorable interactions. The charge transport pathways optimized by type (I) SAs improved device efficiency from 0.18% to 2.82%. Hence, by processing selective SAs, the fraction of intermixed and pure crystalline phases for PDI-based non-fullerene OSCs can be well regulated; therefore, the final performance for both systems can be significantly improved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000345453200063 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49999]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Han, Yanchun |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mingguang,Liu, Jiangang,Cao, Xinxiu,et al. Achieving balanced intermixed and pure crystalline phases in PDI-based non-fullerene organic solar cells via selective solvent additives[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2014,16(48):26917-26928. |
| APA | Li, Mingguang.,Liu, Jiangang.,Cao, Xinxiu.,Zhou, Ke.,Zhao, Qiaoqiao.,...&Han, Yanchun.(2014).Achieving balanced intermixed and pure crystalline phases in PDI-based non-fullerene organic solar cells via selective solvent additives.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,16(48),26917-26928. |
| MLA | Li, Mingguang,et al."Achieving balanced intermixed and pure crystalline phases in PDI-based non-fullerene organic solar cells via selective solvent additives".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16.48(2014):26917-26928. |
入库方式： OAI收割
来源：化学研究所
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