| Acid-functionalized fullerenes used as interfacial layer materials in inverted polymer solar cells | |
| Choi, H.; Lee, J.; Lee, W.; Ko, S.-J.; Yang, R.; Lee, J. C.; Kim, J. Y. | |
| 2013 | |
| 发表期刊 | Organic Electronics
 |
| 卷号 | 14期号:11页码:3138-3145 |
| 摘要 | Two types of carboxylic acid functionalized fullerence derivatives, 4-(2-ethylhexyloxy)- [6,6]-phenyl C61-butyric acid (p-EHO-PCBA) and bis-4-(2-ethylhexyloxy)-[6,6]-phenyl C61-butyric acid (bis-p-EHO-PCBA), were synthesized and investigated as an interfacial layer for inverted polymer solar cells (iPSCs). The –COOH groups on the PCBAs chemisorb to inorganic metal oxide (TiOX), generating fullerene-based self-assembled monolayers (FSAMs). The devices with the mono- and bis-FSAMs exhibited substantially lower series resistance (RS) values of 2.10 X cm2 and 1.46 X cm2, compared to that (4.15 X cm2) of the unmodified device. The TiOX films modified with mono- and bis-FSAMs showed higher contact angles of 50 and 91, respectively, than that of the pristine TiOX film (33). The increased contact angles were attributed to the enhanced hydrophobicity, improving the wetting properties with the organic photoactive layer. In addition, a comparison of device characteristics with electroactive FSAMs and non-electroactive benzoic acid SAMs clearly indicates that the FSAMs may suggest an additional pathway for photo-induced charge transfer and charge collection to ITO. After surface modification with FSAMs, the short-circuit current density (JSC) and fill factor (FF) values increased substantially. The iPSCs based on poly(5,6-bis(octyloxy)-4-(thiophen-2-l)benzo[c][1,2,5]thiadiazole) (PTBT) and [6,6]phenyl- C61-butyric acid methyl ester (PCBM) as an active layer showed remarkably improved power conversion efficiency up to 5.13% through incorporation of the FSAMs-based interfacial Layer. |
| 关键词 | Surface Modification Inverted Polymer Solar Cells Self-assembled Monolayer Interfacial Layer Fullerene |
| 学科领域 | 先进功能有机材料 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qibebt.ac.cn/handle/337004/1703 |
| 专题 | 先进有机功能材料研究组 |
| 推荐引用方式 GB/T 7714 | Choi, H.,Lee, J.,Lee, W.,et al. Acid-functionalized fullerenes used as interfacial layer materials in inverted polymer solar cells[J]. Organic Electronics,2013,14(11):3138-3145. |
| APA | Choi, H..,Lee, J..,Lee, W..,Ko, S.-J..,Yang, R..,...&Kim, J. Y..(2013).Acid-functionalized fullerenes used as interfacial layer materials in inverted polymer solar cells.Organic Electronics,14(11),3138-3145. |
| MLA | Choi, H.,et al."Acid-functionalized fullerenes used as interfacial layer materials in inverted polymer solar cells".Organic Electronics 14.11(2013):3138-3145. |
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