Synthesis and photovoltaic properties of organic dyes containing N-fluoren-2-yl dithieno[3,2-b:2′,3′-d]pyrrole and different donors

Sunil Kumar, K. R. Justin Thomas*, Chun Ting Li, Kuo Chuan Ho

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

20 引文 斯高帕斯(Scopus)

摘要

Abstract New organic dyes containing fluorene appended dithienopyrrole as electron rich linker, different arylamine/heterocyclic units as conjugating donors and cyanoacrylic acid as acceptor have been synthesized and characterized as sensitizers for dye-sensitized solar cells. The effect of different conjugated donors such as triarylamine, carbazole and phenothiazine on the photophysical, electrochemical and photovoltaic properties is investigated. The optical and electrochemical properties of the dyes are strongly influenced by conjugating donors. The dye containing phenothiazine donor exhibited longer wavelength absorption and low oxidation potential. The time dependent density functional calculations performed on the dye models reveal charge transfer character for the longer wavelength absorption. The dye-sensitized solar cells fabricated using a dye containing fluorenyldiphenylamine donor displayed highest power conversion efficiency (6.81%) in the series originating from the high short circuit current density (JSC = 14.01 mA cm-2) and high open circuit voltage (VOC = 738 mV).

原文英語
文章編號3181
頁(從 - 到)109-116
頁數8
期刊Organic Electronics
26
DOIs
出版狀態已發佈 - 2015 七月 18
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 化學 (全部)
  • 生物材料
  • 凝聚態物理學
  • 電氣與電子工程
  • 材料化學

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