Paste for dye-sensitized solar cell, transparent insulation film for dye-sensitized solar cell, dye-sensitized solar cell, and dye-sensitized solar cell fabrication method
AssigneesSharp Kabushiki Kaisha, Sumitomo Osaka Cement Co., Ltd.
InventorsLiyuan Han, Ryohsuke Yamanaka, Nobuhiro Fuke, Atsushi Fukui, Shingo Takano, Gaku Fujihashi
Life of this patent
Estimating the term…
Abstract
A paste containing a silica polymer, made by substituting at least some of the surface functional groups thereof with alkyl groups, and solvent-removable inorganic particles is prepared, and the paste is applied and fired to form a transparent insulating film in a dye-sensitized solar cell.
Claims11
A paste for a dye-sensitized solar cell, comprising:
- a silica polymer, made by substituting at least some of the surface functional groups thereof with alkyl groups, and solvent-removable inorganic particles.
A transparent insulation film for a dye-sensitized solar cell, comprising a silica polymer made by substituting at least some of the surface functional groups thereof with alkyl groups,
- wherein the silica polymer exhibits porosity due to a three-dimensional binding of the silica polymer.
A dye-sensitized solar cell, comprising:
- a transparent substrate,
- a transparent conductive layer formed on the transparent substrate,
- a catalyst layer formed on the transparent conductive layer,
- a transparent insulation film formed on the catalyst layer, the transparent insulation film being formed of a silica polymer made by substituting at least some of the surface functional groups thereof with alkyl groups and exhibiting porosity due to three-dimensional binding of the silica polymer,
- a dye-adsorbed porous semiconductor layer formed on the transparent insulation film, and
- a conductive layer formed on the porous semiconductor layer.
A method of fabricating a dye-sensitized solar cell, comprising:
- forming a transparent conductive layer on a transparent substrate,
- forming a catalyst layer on the transparent conductive layer,
- applying a paste containing a silica polymer made by substituting at least some of the surface functional groups thereof with alkyl groups and solvent-removable inorganic particles onto the catalyst layer, followed by firing to form an insulation film,
- dipping the insulation film in a solvent to dissolve and remove the inorganic particles, thereby forming a transparent insulation film exhibiting porosity due to three-dimensional binding of the silica polymer,
- forming a dye-adsorbed porous semiconductor layer on the transparent insulation film, and
- forming a conductive layer on the porous semiconductor layer.
Dependencies are inferred from the claim text.