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Journal of Nanophotonics

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

Paper Details

Date Published: 10 June 2013
PDF: 11 pages
J. Nanophoton. 7(1) 073090 doi: 10.1117/1.JNP.7.073090
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Yaoguang Rong, Huazhong Univ. of Science and Technology (China)
Hongwei Han, Huazhong Univ. of Science and Technology (China)

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