The incorporation of polyaniline (PANi) with three-dimensional (3D) gel matrix is versatile in expanding reduction reaction (triiodide -> iodide) area from Pt counter electrode! electrolyte interface to 3D framework of the conducting gel electrolyte and elevating electrocatalytic activity. In the current work, four methods have been applied to fabricate PANi incorporated poly(acrylic acid)-poly(ethylene glycol) (PAA-PEG) conducting gel electrolytes with an aim of enhancing PANi dosage and therefore charge-transfer ability. The electrical and electrochemical performances of the resultant conducting gel electrolytes are thoroughly characterized. An impressive light-to-electric power conversion efficiency of 7.36% is determined from B2 gel electrolyte based dye-sensitized solar cell. (C) 2014 Published by Elsevier Ltd.