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標題: Immobilization of poly(N-vinyl-2-pyrrolidone)-capped platinum nanoclusters on indium-tin oxide glass and its application in dye-sensitized solar cells
作者: Wei, T.C.
Wan, C.C.
Wang, Y.Y.
Chen, C.M.
Shiu, H.S.
關鍵字: impedance analysis;counter-electrode;conversion;performance;reduction;circuit;light
Project: Journal of Physical Chemistry C
期刊/報告no:: Journal of Physical Chemistry C, Volume 111, Issue 12, Page(s) 4847-4853.
Poly(N-vinyl-2-pyrrolidone) (PVP)-capped Pt nanoclusters were deposited on indium-tin oxide glass via a simple two-step dip-coating process. This new type of electrode was examined by atomic force microscopy, inductively coupled plasma-atomic emission spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. The results reveal that the Pt nanoclusters sized about 10-20 nm show a noticeable catalytic effect on tri-iodide reduction although they are surrounded by PVP entanglements. The new electrolyte can serve as a counter electrode in dye-sensitized solar cells (DSSCs). In addition, we have found a counter action between the nanosized effect and the hindrance effect by PVP entanglement on both catalytic kinetics and ion diffusivity. Finally, at certain PVP levels, the so-prepared electrode's performance is similar to a smooth Pt metal sheet electrode. So this process could potentially reduce manufacturing costs for DSSCs, which further enhances the feature of DSSCs in furnishing low cost solar electricity.
ISSN: 1932-7447
DOI: 10.1021/jp067501c
Appears in Collections:化學工程學系所

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