期刊
JOURNAL OF NANOPHOTONICS
卷 7, 期 -, 页码 -出版社
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.JNP.7.073090
关键词
green photonics; monolithic; dye-sensitized solar cells; graphene; carbon counter electrode
资金
- National Natural Science Foundation of China [61106056]
- Nature Science Foundation of Hubei Province [2008CDA042]
- Scientific Research Foundation for Returned Scholars, Ministry of Education of China
- Fundamental Research Funds for the Central Universities (Hust) [2011TS020]
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 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. (c) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
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