US 8,796,545 B2 · Dye-sensitized solar cell, its photoelectrode and producing method thereof

Abstract

A dye-sensitized solar cell includes a negative electrode, a positive electrode, a photoelectrode mounted between the negative electrode and the positive electrode, and an electrolyte located between the photoelectrode and the positive electrode. The photoelectrode is adapted to absorb a dye. The photoelectrode includes a dense layer, a scattering layer and a carrier transport layer. The dense layer, the scattering layer and the carrier transport layer are stacked one upon another. The dense layer is formed by titanium dioxide nanoparticles having a diameter of 15-20 nm. The scattering layer is formed by titanium dioxide nanospheres having a diameter of 200-500 nm. The carrier transport layer is formed by titanium dioxide nanotubes having a length of 300-800 nm. Furthermore, a photoelectrode for the dye-sensitized solar cell, as well as a method for producing the photoelectrode, are also disclosed.

Claims11

Dependent claims

A dye-sensitized solar cell comprising

a negative electrode;
a positive electrode;
a photoelectrode mounted between the negative electrode and the positive electrode, with the photoelectrode adapted to absorb a dye, with the photoelectrode including a dense layer, a scattering layer and a carrier transport layer, with the dense layer, the scattering layer and the carrier transport layer stacked one upon another, with the dense layer having a thickness of 3-6 μm and formed by titanium dioxide nanoparticles having a diameter of 15-20 nm, with the scattering layer having a thickness of 8-11 μm and formed by titanium dioxide nanospheres having a diameter of 200-500 nm, and with the carrier transport layer having a thickness of 5-8 μm and formed by titanium dioxide nanotubes having a length of 300-800 nm;
and
an electrolyte located between the photoelectrode and the positive electrode.

2 more elements

A method for producing a photoelectrode for a dye-sensitized solar cell, with the method comprising:

respectively mixing powders of titanium dioxide nanoparticles having a diameter of 15-20 nm, powders of titanium dioxide nanospheres having a diameter of 200-500 nm, and powders of titanium dioxide nanotubes having a length of 300-800 nm in a solvent;
adding a binder into the solvent to make the powders of titanium dioxide nanoparticles, the powders of titanium dioxide nanospheres, and the powders of titanium dioxide nanotubes respectively and homogenously mix with the solvent, forming a particle-shaped paste, a ball-shaped paste, and a tube-shaped paste, respectively;
forming a dense layer, a scattering layer and a carrier transport layer with the particle-shaped paste, the sphere-shaped paste and the tube-shaped paste, respectively;
and
stacking the dense layer, the scattering layer and the carrier transport layer on a substrate to form a photoelectrode, wherein the dense layer has a thickness of 3-6 μm, the scattering layer has a thickness of 8-11 μm, and the carrier transport layer has a thickness of 5-8 μm.

2 more elements

Dependencies are inferred from the claim text.

Dye-sensitized solar cell, its photoelectrode and producing method thereof

Life of this patent

Dye-sensitized solar cell, its photoelectrode and producing method thereof

Life of this patent

Abstract

Claims11