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Proceedings Paper

Monolithic quasi-solid-state dye-sensitized solar cells based on graphene modified mesoscopic carbon counter electrodes
Author(s): Yaoguang Rong; Xiong Li; Guanghui Liu; Heng Wang; Zhiliang Ku; Mi Xu; Linfeng Liu; Min Hu; Ying Yang; Hongwei Han
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Paper Abstract

We have developed a monolithic quasi-solid-state dye-sensitized solar cell (DSSC) based on graphene modified mesoscopic carbon counter electrode (GC-CE), which offers a promising prospect for commercial applications. Based on the design of a triple layer structure, the TiO2 working electrode layer, ZrO2 spacer layer and carbon counter electrode (CE) layer are constructed on a single conducting glass substrate by screen-printing. The quasi-solid-state polymer gel electrolyte employs a polymer composite as the gelator and could effectively infiltrate into the porous layers. Fabricated with normal carbon counter electrode (NC-CE) containing graphite and carbon black, the device shows a power conversion efficiency (PCE) of 5.09% with the fill factor (FF) of 0.63 at 100 mW cm-2 AM1.5 illumination. When the NC-CE is modified with graphene sheets, the PCE and FF could be 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: 6 March 2013
PDF: 12 pages
Proc. SPIE 8622, Organic Photonic Materials and Devices XV, 86221G (6 March 2013); doi: 10.1117/12.2002769
Show Author Affiliations
Yaoguang Rong, Huazhong Univ. of Science and Technology (China)
Xiong Li, Huazhong Univ. of Science and Technology (China)
Guanghui Liu, Huazhong Univ. of Science and Technology (China)
Heng Wang, Huazhong Univ. of Science and Technology (China)
Zhiliang Ku, Huazhong Univ. of Science and Technology (China)
Mi Xu, Huazhong Univ. of Science and Technology (China)
Linfeng Liu, Huazhong Univ. of Science and Technology (China)
Min Hu, Huazhong Univ. of Science and Technology (China)
Ying Yang, Huazhong Univ. of Science and Technology (China)
Hongwei Han, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8622:
Organic Photonic Materials and Devices XV
Christopher E. Tabor; François Kajzar; Toshikuni Kaino; Yasuhiro Koike, Editor(s)

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