Multi-alkylthienyl appended porphyrins for efficient dye-sensitized solar cells

作者：Zhou, Weiping; Zhao, Bin; Shen, Ping; Jiang, Shenghui; Huang, Hongduan; Deng, Lijun; Tan, Songting^*

来源：Dyes and Pigments, 2011, 91(3): 404-412.

DOI：10.1016/j.dyepig.2011.05.017

• Multi-alkylthienyl porphyrins
• Thiophene derivatives
• Red-shifted
• Power conversion efficiency
• Dye-sensitized solar cells
• Photovoltaic performance

Four porphyrin dyes, incorporating multi-alkylthienyl appended porphyrins as the electron donor, the 2-cyanoacrylic acid as the electron acceptor, and different pi-conjugated spacer, have been synthesized for dye-sensitized solar cells (DSSCs). All the porphyrin dyes studied in this work exhibit red-shifted and broadened electronic spectra respect to the reference P(Zn) as expected. By the introduction of thienyl groups at the meso-positions, the energy level of E(ox) (excited-state oxidation potentials) is significantly shifted to the positive compared with the reference P(Zn), indicating a decreased HOMO-LUMO gap. The highest power conversion efficiency of the four dyes based on DSSCs reached 5.71% under AM 1.5 G irradiation.

• 出版日期2011-12
• 单位湘潭大学