Photoelectrochemistry at SnO2 particulate fractal electrodes sensitized by a ruthenium complex

摘要: Abstract Nanocrystalline tin oxide thin film electrodes were prepared and their structural morphological properties characterized. X-ray diffraction (XRD) confirmed the films crystallinity, whereas both scanning electron microscopy (SEM) atomic force (AFM) revealed presence of a porous fractal network interconnected nanoparticles forming uniform surface features relatively low roughness. The SnO2 particulate successfully sensitized by ruthenium N3 complex solid-state solar cells assembled incorporating binary polymer/inorganic electrolyte. incorporation composite electrolyte consisting poly(ethylene) (PEO) filled with titanium containing LiI I2 as redox couple presents satisfying cell performance in comparison liquid junction photoelectrochemical cell: typical maximum incident photon to current efficiency (IPCE) high 46% at 510 nm, short-circuit photocurrent (Jsc) 2.6 mA cm−2 overall conversion (η) 0.14% under white light illumination obtained. IPCE values dye-sensitised based on are enough can be compared those obtained titania nanoporous electrodes. power energy is attributed poor fill factor (FF=0.21) photovoltage (Voc=0.21 V), characteristics that related reduction triodide conduction band electrons intrinsic oxide.