Abstract
New type counter electrodes comprised of Pt and a metal oxide biphase, Pt–NiO and Pt–TiO 2, were prepared by RF magnetron co-sputtering system for use in dye-sensitized solar cells. Transmission electron microscope images confirmed the formation of ∼3 nm nanosized Pt polycrystalline mixed with metal oxide phase, which has higher active surface area than a conventional Pt electrode. When the Pt–TiO 2 counter electrode was used in the cell, the power conversion efficiency was increased up to ∼1.56 times, compared to conventional devices composed of a Pt electrode under 1 Sun with air mass 1.5 Global illumination due to its superior electrocatalytic activity and efficient reflection of incident light at the counter electrode.
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More From: Journal of Photochemistry & Photobiology, A: Chemistry
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