A low-cost counter electrode of ITO glass coated with a graphene/Nafion® composite film for use in dye-sensitized solar cells

Min Hsin Yeh, Chia Liang Sun, Jheng Sin Su, Lu Yin Lin, Chuan Pei Lee, Chia Yuan Chen, Chun Guey Wu, R. Vittal, Kuo Chuan Ho

研究成果: 雜誌貢獻期刊論文同行評審

78 引文 斯高帕斯(Scopus)

摘要

Carbon black (CB), multi-walled carbon nanotube (MWCNT), and graphene (GN) were examined as catalytic films on the counter electrodes (CEs) of dye-sensitized solar cells (DSSCs). GN exhibits the best performance among these materials for the corresponding cell. A composite film of GN/Nafion® was next used as the catalytic film on the CE of a DSSC. Nafion® is demonstrated to be an excellent dispersant for inhibiting the aggregation of GN. A solar-to-electricity conversion efficiency (η) of 8.19% was achieved for the DSSC sensitized by TBA(Ru[(4-carboxylic acid-4′-carboxylate-2,2′- bipyridine)(4,4′-bis(5-(hexylthio)-2,2′-bithien-5′-yl)-2, 2′-bipyridine)(NCS) 2]), i.e., CYC-B11 dye, which was synthesized by our group, after the optimization of the composition of GN/Nafion®, and an η of 8.89% was exhibited for the cell with a sputtered-Pt (s-Pt) film on its CE under the same conditions. The significance of the cell with the composite film of GN/Nafion® lies in the fact that the expensive Pt is avoided in this case, thereby the cost of the pertinent DSSC was greatly reduced, even though its η (8.19%) is slightly smaller than that of the cell with the s-Pt film (8.89%).

原文???core.languages.en_GB???
頁(從 - 到)4192-4202
頁數11
期刊Carbon
50
發行號11
DOIs
出版狀態已出版 - 9月 2012

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