A versatile fluoro-containing low-bandgap polymer for efficient semitransparent and tandem polymer solar cells

Chih Yu Chang, Lijian Zuo, Hin Lap Yip, Yongxi Li, Chang Zhi Li, Chain Shu Hsu, Yen Ju Cheng, Hongzheng Chen, Alex K.Y. Jen

研究成果: 雜誌貢獻文章同行評審

104 引文 斯高帕斯(Scopus)

摘要

The versatility of a fluoro-containing low band-gap polymer, poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4, 7-(5-fluoro-2,1,3-benzothia-diazole)] (PCPDTFBT) in organic photovoltaics (OPVs) applications is demonstrated. High boiling point 1,3,5-trichlorobenzene (TCB) is used as a solvent to manipulate PCPDTFBT:[6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) active layer morphology to obtain high-performance single-junction devices. It promotes the crystallization of PCPDTFBT polymer, thus improving the charge-transport properties of the active layer. By combining the morphological manipulation with interfacial optimization and device engineering, the single-junction device exhibits both good air stability and high power-conversion efficiency (PCE, of 6.6%). This represents one of the highest PCE values for cyclopenta[2,1-b;3,4-b']dithiophene (CPDT)-based OPVs. This polymer is also utilized for constructing semitransparent solar cells and double-junction tandem solar cells to demonstrate high PCEs of 5.0% and 8.2%, respectively. The versatility of a fluoro-containing polymer, PCPDTFBT, in diverse organic photovoltaic applications is demonstrated. By combining morphological, interface, and device engineering, the single-junction cell shows both a high power conversion efficiency (PCE) of 6.6% and good air stability. In addition, the applications of PCPDTFBT in highly efficient semitransparent cells (PCE = 5.0%, average visible transmittance (AVT) = 47.3%) and double-junction tandem cells (PCE = 8.2%) are also demonstrated.
原文英語
頁(從 - 到)5084-5090
頁數7
期刊Advanced Functional Materials
23
發行號40
DOIs
出版狀態已發佈 - 7月 17 2013
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 生物材料
  • 凝聚態物理學
  • 電化學

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