title: A low-cost bio-inspired integrated carbon counter electrode for high conversion efficiency dye-sensitized solar cells.
abstract: A novel bio-inspired Pt- and FTO-free integrated pure carbon counter electrode (CE) for dye-sensitized solar cells (DSSCs) has been designed and fabricated using a porous carbon sheet as a conducting substrate and ordered mesoporous carbon (OMC) as the catalytic layer. A rigid, crustose lichen-like, integrated carbon-carbon composite architecture with a catalytic layer rooted in a porous conducting substrate was formed by a process of polymer precursor spin coating, infiltration and pyrolysis. The integrated pure carbon CE shows very low series resistance (R(s)), owing to the high conductivity of the carbon sheet (sheet resistance of 488 mΩ □(-1)) and low charge-transfer resistance (R(ct)), due to the large specific surface area of the OMC layer that is accessible to the redox couple. The values of R(s) and R(ct) are much lower than those of a platinized fluorine-doped thin oxide glass (Pt/FTO) electrode. Cells with this CE show high solar-to-electricity conversion efficiencies (8.11%), comparable to that of Pt/FTO based devices (8.16%).
authors.affiliation: State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 116024, China.
authors.forename: Chunlei
authors.initials: C
authors.lastname: Wang
authors.forename: Fanning
authors.initials: F
authors.lastname: Meng
authors.forename: Mingxing
authors.initials: M
authors.lastname: Wu
authors.forename: Xiao
authors.initials: X
authors.lastname: Lin
authors.forename: Tonghua
authors.initials: T
authors.lastname: Wang
authors.forename: Jieshan
authors.initials: J
authors.lastname: Qiu
authors.forename: Tingli
authors.initials: T
authors.lastname: Ma
mesh_terms: D002244:Carbon; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D004566:Electrodes; D005461:Fluorine / Q000737:chemistry; D010084:Oxidation-Reduction; D010984:Platinum / Q000737:chemistry; D016062:Porosity; D012993:Solar Energy; D017971:Tin Compounds / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D017971:Tin Compounds; D005461:Fluorine; D010984:Platinum; D002244:Carbon; C045358:stannic oxide