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Electrophoretic Deposition of a Reduced Graphene–Au Nanoparticle Composite Film as Counter Electrode for CdS Quantum Dot‐Sensitized Solar Cells
Author(s) -
Zhu Guang,
Pan Likun,
Sun Hengchao,
Liu Xinjuan,
Lv Tian,
Lu Ting,
Yang Jie,
Sun Zhuo
Publication year - 2012
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100861
Subject(s) - electrophoretic deposition , graphene , auxiliary electrode , electrode , materials science , nanoparticle , quantum dot , graphite , composite number , nanotechnology , dye sensitized solar cell , oxide , dispersion (optics) , deposition (geology) , chemical engineering , solar cell , optoelectronics , composite material , chemistry , optics , coating , physics , engineering , electrolyte , metallurgy , paleontology , sediment , biology
A reduced graphene (RG)‐Au nanoparticle composite film is successfully fabricated by electrophoretic deposition and used as counter electrode for quantum dot‐sensitized solar cells. The RG‐Au composite is prepared by one‐step microwave‐assisted reduction of chloroaurate in alkaline solution with graphite oxide dispersion. Under one sun illumination (AM 1.5 G, 100 mW cm −2 ), the cell with a RG‐Au counter electrode shows an energy conversion efficiency of 1.36 %, which is higher than those of cells employing conventional Pt or Au counter electrodes, due to the superior combination of highly catalytic Au nanoparticles and the conductive graphene network structure.