Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes

Yaoguang Rong; Hongwei Han

doi:10.1117/1.JNP.7.073090

10 June 2013 Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes

Yaoguang Rong, Hongwei Han

Author Affiliations +

Journal of Nanophotonics, Vol. 7, Issue 1, 073090 (June 2013). https://doi.org/10.1117/1.JNP.7.073090

Abstract

A monolithic quasi-solid-state dye-sensitized solar cell (DSSC) based on graphene-modified mesoscopic carbon-counter electrode is developed. A TiO ₂ -working electrode layer, ZrO ₂ spacer layer, and carbon counter electrode layer were constructed on a single conducting glass substrate by screen printing. The quasi-solid-state polymer gel electrolyte employed a polymer composite as the gelator, and effectively infiltrated the porous layers. Fabricated with normal carbon-counter electrode (NC-CE) containing graphite and carbon black, the DSSC had a power conversion efficiency (PCE) of 5.09% with the fill factor of 0.63 at 100 mW cm⁻² AM1.5 illumination. When the NC-CE was modified with graphene sheets, the PCE and fill factor were enhanced to 6.27% and 0.71, respectively. This improvement indicates excellent conductivity and high electrocatalytic activity of the graphene sheets, which have been considered as a promising platinum-free electrode material for DSSCs.

Citation Download Citation

Yaoguang Rong and Hongwei Han "Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes," Journal of Nanophotonics 7(1), 073090 (10 June 2013). https://doi.org/10.1117/1.JNP.7.073090

Published: 10 June 2013

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