https://scholars.lib.ntu.edu.tw/handle/123456789/390572
標題: | Star-shaped organic semiconductors with planar triazine core and diketopyrrolopyrrole branches for solution-processed small-molecule organic solar cells | 作者: | Shiau, S.-Y. Chang, C.-H. Chen, W.-J. Wang, H.-J. Jeng, R.-J. Lee, R.-H. RU-JONG JENG |
關鍵字: | Bulk heterojunction cell; Conjugated molecules; Diketopyrrolopyrrole; Photovoltaic performance; Star-shaped molecules; Triazine | 公開日期: | 2015 | 卷: | 115 | 起(迄)頁: | 35-49 | 來源出版物: | Dyes and Pigments | 摘要: | A series of novel triazine-cored, star-shaped, conjugated molecules have been synthesized as donor materials for small molecule based organic solar cells. The structural features of these star-shaped molecules include a planarized triazine as the central core, 2,5-thienyl diketopyrrolopyrrole and 1,4-phenylene diketopyrrolopyrrole as the π-conjugated bridge, and tert-butyl-substituted triphenylamine and tert-butyl-substituted carbazole as the role of end groups and donor units. Photovoltaic properties of the solar cells based on the star-shaped molecule with 2,5-thienyl diketopyrrolopyrrole branches were much better than those of the solar cells based on the one with 1,4-phenylene diketopyrrolopyrrole branches. A power conversion efficiency of 1.57%, a short-circuit current density of 6.34 mA/cm2, an open-circuit voltage of 0.73 V, and a fill factor of 0.34 were observed for the organic solar cell based on the star-shaped molecule with 2,5-thienyl diketopyrrolopyrrole branches. © 2014 Elsevier Ltd. All rights reserved. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84922369333&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/390572 |
DOI: | 10.1016/j.dyepig.2014.12.007 | SDG/關鍵字: | Heterojunctions; Molecules; Open circuit voltage; Organic polymers; Solar power generation; Stars; Synthesis (chemical); Bulk heterojunction; Conjugated molecules; Diketopyrrolopyrroles; Photovoltaic performance; Star-shaped molecules; Triazine; Solar cells |
顯示於: | 高分子科學與工程學研究所 |
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