Electrochimica Acta, Vol.280, 181-190, 2018
Hybridized dye-sensitized solar cells for persistent power generation free of sun illumination
The development of weather-independent photovoltaics is a persistent goal for energy technique. Herein we develop a category of hybridized dye-sensitized solar cells (DSSCs) from cost-effective poly(3,4-ethylenedioxythiophene) (PEDOT) derivate counter electrodes and mesoscopic titanium dioxide/long persistence phosphors (m-TiO2/LPPs) composite photoanodes. Using the solar energy storage and emission performances of LPP phosphors, the final m-TiO2/LPPs photoanodes are demonstrated to store unabsorbed incident light and to persistently emit monochromatic light for re-exciting photosensitizers. The optimized photovoltaics yield a maximized power conversion efficiency of 10.07% under simulated sunlight irradiation (100 mW cm(-2), air mass 1.5 global) and durable energy output lasting for hours when ceasing solar illumination. The application of m-TiO2/LPP photoanodes in the hybridized DSSCs provides new opportunities of making multi-energy integrated photovoltaics for persistent power generation free of sun illumination. (C) 2018 Elsevier Ltd. All rights reserved.
Keywords:Hybridized solar cells;Dye-sensitized solar cells;Photoanodes;Energy storage and conversion;Pt-free counter electrodes