| 摘要 |
<p>A photovoltaic dye cell comprising a porous sintered titania anode, where the pores have a size suitable for receiving quantum dot nanoparticles and where carbon contamination from use of organic pore-formers is avoided. The cell comprises: a cell housing including an at least partially transparent glass cell wall; an electrolyte, within said housing, and containing a charge transfer species; an at least partially transparent electrically conductive layer disposed on an interior surface of said cell wall; an anode disposed on said electrically conductive layer, including: a sintered porous film containing titania with a dye adsorbed on the surface, the film being disposed on said electrically conductive layer and adapted to contact said electrolyte; and a cathode including a catalytic surface disposed to fluidly contact said electrolyte, wherein the sintered porous film has an average pore size of at least 30 nanometers and contains less than 700ppm carbon. Also disclosed is the above cell where the pores within said sintered porous film contain encapsulated quantum dots. The quantum dots are adapted to absorb photons and pass the energy to the dye molecules by a method of Foerster Resonance Energy Transfer (FRET). The pores in the sintered porous film are formed by adding a non-organic pore-forming material (e.g. aluminium oxide or zinc oxide) to the titanium dioxide paste prior to sintering, then removing the pore-former through etching.</p> |
