Research Papers

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

[+] Author Affiliations
Yaoguang Rong

Huazhong University of Science and Technology, School of Optical and Electronic Information, Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Wuhan 430074, Hubei, China

Hongwei Han

Huazhong University of Science and Technology, School of Optical and Electronic Information, Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Wuhan 430074, Hubei, China

J. Nanophoton. 7(1), 073090 (Jun 10, 2013). doi:10.1117/1.JNP.7.073090
History: Received March 17, 2013; Revised May 16, 2013; Accepted May 17, 2013
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Abstract.  A monolithic quasi-solid-state dye-sensitized solar cell (DSSC) based on graphene-modified mesoscopic carbon-counter electrode is developed. A TiO2-working electrode layer, ZrO2 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 100mWcm2 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.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Yaoguang Rong and Hongwei Han
"Monolithic quasi-solid-state dye-sensitized solar cells based on graphene-modified mesoscopic carbon-counter electrodes", J. Nanophoton. 7(1), 073090 (Jun 10, 2013). ; http://dx.doi.org/10.1117/1.JNP.7.073090


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