1 research outputs found
Platinum-Free Cathode for Dye-Sensitized Solar Cells Using Poly(3,4-ethylenedioxythiophene) (PEDOT) Formed via Oxidative Molecular Layer Deposition
Thin ∼20 nm conformal polyÂ(3,4-ehylenedioxythiophene)
(PEDOT)
films are incorporated in highly conductive mesoporous indium tin
oxide (m-ITO) by oxidative molecular layer deposition (oMLD). These
three-dimensional catalytic/conductive networks are successfully employed
as Pt-free cathodes for dye-sensitized solar cells (DSSCs) with open
circuit voltage equivalent to Pt cathode devices. Thin and conformal
PEDOT films on m-ITO by oMLD create high surface area and efficient
electron transport paths to promote productive reduction reaction
on the PEDOT film. Because of these two synergetic effects, PEDOT-coated
m-ITO by oMLD shows power conversion efficiency, 7.18%, comparable
to 7.26% of Pt, and higher than that of planar PEDOT coatings, which
is 4.85%. Thus, PEDOT-coated m-ITO is an exceptional opportunity to
compete with Pt catalysts for low-cost energy conversion devices