https://scholars.lib.ntu.edu.tw/handle/123456789/636131
標題: | Enhancing the solubility of n-type diketopyrrolopyrrole-dicyanovinyl molecules with hybrid siloxane group for solution-processable organic field-effect transistor | 作者: | Prakoso, S. P. Ciou, G. T. Lin, H.-Y. Peng, W. C. Sie, J. H. Huang, Y.-F. Gan, Y. H. Ke, Y. J. Y.-F. Huang CHIEN LUNG WANG Tao, Y. T. |
關鍵字: | Device fabrication | Diketopyrrolopyrrole (DPP) | organic electronics | 公開日期: | 4-十一月-2019 | 卷: | 2168 | 來源出版物: | AIP Conference Proceedings | 摘要: | Diketopyrrolopyrrole (DPP) organic dye is well-known to have poor solubility in most common organic solvents. In general, flexible alkyl chain is used to enhance the solubility of conjugated small molecules by disrupting the attraction between molecules. In this study, we have integrated hybrid organic-inorganic siloxane group as a solubilizing agent on DPP molecule carrying dicyanovinyl (DCV) as an electron-withdrawing group. UV-Vis absorption spectra were collected to evaluate the optical properties of these compounds. The electrical performances of these organic semiconductors were examined by fabricating into transistor device with them as active channel layer in the bottom gate staggered configuration. Furthermore, the molecular packing in thin films from this series was investigated by 2D grazing incident x-ray diffraction (GIXD) in relationship with device performances. It is shown that the siloxane group at the side chain of DPP effectively enhances the solubility of this molecule compared to DPP molecule with branched alkyl chain from previous study. A better solubility allows for device fabrication by solution process yet improves crystallinity of organic films and thus its electrical device performance. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/636131 | ISBN: | 9780735419155 | ISSN: | 0094243X | DOI: | 10.1063/1.5132430 |
顯示於: | 化學系 |
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