標題: A crystalline low-bandgap polymer comprising dithienosilole and thieno[3,4-c] pyrrole-4,6-dione units for bulk heterojunction solar cells
作者: Yuan, Mao-Chuan
Chou, Yi-Jen
Chen, Chia-Min
Hsu, Chang-Lung
Wei, Kung-Hwa
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Crystalline conjugated polymer;Thieno[3,4-c]pyrrole-4,6-dione;Polymer solar cells
公開日期: 8-Jun-2011
摘要: We have used Stille coupling polymerization to synthesize a new low-bandgap conjugated polymer, PDTSTPD, that consists of an electron-rich dithieno[3,2-b:2',3'-d]-silole (DTS) unit and an electron-deficient thieno[3,4-c]pyrrole-4,6-dione (TPD) moiety. The polymer exhibited an excellent thermal stability, crystalline characteristics, a broad spectral absorption, and a deep highest occupied molecular orbital (HOMO) energy level, resulting from combination of the rigid TPD and the coplanar DTS units in the polymer backbone. Moreover, the presence of the silicon atoms along the polymer chain ensured PDTSTPD having strong interchain stacking and good hole mobility. An optimal device incorporating the PDTSTPD:PC(71)BM blend at a weight ratio of 1:1 provided a power conversion efficiency of 3.42%. (c) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.polymer.2011.04.057
http://hdl.handle.net/11536/22681
ISSN: 0032-3861
DOI: 10.1016/j.polymer.2011.04.057
期刊: POLYMER
Volume: 52
Issue: 13
起始頁: 2792
結束頁: 2798
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