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High‐performing dye‐sensitized solar cells based on reduced graphene oxide/ PEDOT‐PSS counter electrodes with sulfuric acid post‐treatment
Author(s) -
Lan Zhang,
Gao Suwen,
Wu Jihuai,
Lin Jianming
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42648
Subject(s) - pedot:pss , auxiliary electrode , polystyrene sulfonate , graphene , materials science , tafel equation , dye sensitized solar cell , electrode , cyclic voltammetry , oxide , polarization (electrochemistry) , polystyrene , chemical engineering , nanotechnology , electrochemistry , chemistry , composite material , electrolyte , polymer , layer (electronics) , engineering , metallurgy
Four kinds of counter electrodes are prepared with polystyrene‐sulfonate doped poly(3,4‐ethylenedioxythiophene) (PEDOT‐PSS) as basic material, reduced graphene oxide (rGO) sheets as additives and H 2 SO 4 as treating agent. The cyclic voltammetry and Tafel polarization are measured to evaluate catalytic activity of these counter electrodes forI 3 − /I − redox couple. It is found that H 2 SO 4 treated rGO and PEDOT‐PSS hybrid counter electrode (S/rGO/PEDOT‐PSS counter electrode) has the highest catalytic activity among these counter electrodes. Power conversion efficiency of the dye‐sensitized solar cell with S/rGO/PEDOT‐PSS counter electrode can attain to 7.065%, distinctly higher than that of the cells with the other three ones, owing to the great enhanced fill factor and short‐circuit current density. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42648.