Chin. J. Org. Chem. ›› 2011, Vol. 31 ›› Issue (04): 511-515. Previous Articles     Next Articles

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一种含氧供电基团的染料合成及其光伏性能

孙思远,徐英军,梁茂,孙喆,薛松*   

  1. (天津理工大学化学化工学院 天津 300384)
  • 收稿日期:2010-09-07 修回日期:2010-10-18 发布日期:2010-11-23
  • 通讯作者: 薛松 E-mail:xuesong@ustc.edu.cn

Synthesis of a New Organic Dye Containing Alkoxy Group as Donor for Dye-Sensitized Solar Cells

SUN Si-Yuan, XU Ying-Jun, LIANG Mao, SUN Zhe, XUE Song   

  1. (College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384)
  • Received:2010-09-07 Revised:2010-10-18 Published:2010-11-23

A new organic dye (named L1) containing butoxy group as donor was designed and synthesized. Treatment of 4-bromophenol with n-BuI and B(OCH3)3 gave the boronic acid. The intermediate aldehyde was prepared from bis-thiophene via bromonation reaction with N-bromosuccinimide (NBS) and Vilsmeier-Haack reaction. The dye was synthesized from the Suzuki coupling reaction of the boronic acid with the aldehyde, followed by Knoevenagel condensation reaction with cyanoacetic acid. The dye was applied to nanocrystalline TiO2 dye-sensitized solar cells through standard operations. For a typical device the maximal monochromatic incident photon-to-current conversion efficiency (IPCE) can reach 62%, with a short-circuit photocurrent density (Jsc) 6.4 mA•cm-2, an open-circuit photovoltage (Voc) 535 mV, and fill factor (FF) 0.60, which corresponds to an overall conversion efficiency of 2.1%.

Key words: dye-sensitized solar cell, photovoltaic, organic dye, cyclopentadithiophene, alkoxyl group