Dye-sensitized solar cells based on hydroquinone/benzoquinone as bio-inspired redox couple with different counter electrodes

Phys Chem Chem Phys. 2013 Sep 28;15(36):15146-52. doi: 10.1039/c3cp51980e.

Abstract

In the present study, tetramethylammonium hydroquinone (HQ)/benzoquinone (BQ) were developed for use as a redox couple, with poly(3,4-ethylenedioxythiophene) (PEDOT) and multiwalled carbon nanotubes (MWNT) being proposed for use as counter electrode (CE) catalysts in dye-sensitized solar cells (DSSCs). Both metal-complex N719 and metal-free organic dye CM309 were employed to fabricate devices. For the devices sensitized by N719, when using PEDOT and MWNT CEs, power conversion efficiencies (PCE) of 5.2 and 4.9% were obtained, respectively, which were much higher than that of the device using the traditional Pt CE (4.7%) when HQ/BQ electrolyte was employed. However, with the HQ/BQ redox shuttle, the efficiency of the devices sensitized by N719 is much lower than that of the devices when the traditional I(-)/I3(-) based electrolyte and Pt CE were employed (7.9%). While for the CM309 sensitized solar cells, when the HQ/BQ redox shuttle was employed, PEDOT and MWNT performed much better than Pt, the DSSC using the PEDOT CE showed an efficiency of 6.2%, which was close to that of the DSSC using the traditional I(-)/I3(-) electrolyte and Pt CE (6.3%).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzoquinones / chemistry*
  • Coloring Agents / chemistry*
  • Electric Power Supplies*
  • Electrodes
  • Hydroquinones / chemistry*
  • Molecular Structure
  • Nanotubes, Carbon / chemistry
  • Organometallic Compounds / chemistry
  • Oxidation-Reduction
  • Particle Size
  • Solar Energy*
  • Surface Properties

Substances

  • Benzoquinones
  • Coloring Agents
  • Hydroquinones
  • Nanotubes, Carbon
  • Organometallic Compounds
  • quinone
  • hydroquinone