摘要
In this article, carbon- (PCPDTTBT) and silicon-bridged (PSiPDTTBT) cyclopentadithiophene (CPDT)-based polymers have been synthesized. We have systematically studied the effect of replacing a carbon atom with a silicon atom on the main chain of the conjugated polymer and the optoelectronic properties. With the simple substitution, the results indicate that the PSiPDTTBT reveals a higher crystallinity, improved thermal stability, charge transport properties, and lower resistance at the polymer-electrolyte interface. As a result, the PSiPDTTBT exhibits better electrochromic properties including higher contrast and coloration efficiency (CE) with respect to its carbon analogs. We attribute this better electrochromic performance to the presence of strong π-π stacking in the silicon-bridged CPDT-based polymer. The PSiPDTTBT shows a transmittance window of 55.5% at 560 nm and CE of 434 mC/cm2.
原文 | 英語 |
---|---|
頁(從 - 到) | 43-50 |
頁數 | 8 |
期刊 | Solar Energy Materials and Solar Cells |
卷 | 150 |
DOIs | |
出版狀態 | 已發佈 - 6月 2016 |
ASJC Scopus subject areas
- 電子、光磁材料
- 表面、塗料和薄膜
- 可再生能源、永續發展與環境