Porous structure body and method for producing the same

A method for producing a dye-sensitized solar cell, comprising the steps of:

• preparing a substrate comprising a transparent electrode;
• obtaining a complex by binding a multimer of a fusion protein to a first target material, wherein the multimer of the fusion protein has an internal cavity and is formed from the fusion protein that contains a first peptide portion capable of binding to the first target material, a second peptide portion capable of binding to the second target material, and a polypeptide portion capable of forming a multimer having an internal cavity, thereby forming a combination body and binding the combination body to a second target material or a precursor of the second target material;
• placing a material comprising the complex on the transparent electrode;
• burning the material on the transparent electrode to consume the multimer of the fusion protein, thereby forming a structure having a porous structure body on the transparent electrode, the porous structure body comprising an aggregate body that comprises the second target material, adheres to the first target material, and is located so as to surround the first target material, the aggregate body having a plurality of first pores unevenly distributed near the first target material and a plurality of second pores scattered over the aggregate body;
• supporting a sensitizing dye by the porous structure body, thereby forming a photoelectrode;
• and
• pouring an electrolyte and sealing the photoelectrode and a counter electrode.

A method for producing a dye-sensitized solar cell, comprising the steps of:

• preparing a substrate comprising a transparent electrode;
• forming a porous structure body comprising an aggregate body by binding a multimer of a fusion protein, wherein the multimer of the fusion protein has an internal cavity and is formed from the fusion protein that contains a first peptide portion capable of binding to the first target material, a second peptide portion capable of binding to the second target material, and a polypeptide portion capable of forming a multimer having an internal cavity, to a first target material, thereby forming a combination body, binding the combination body to a second target material or a precursor of the second target material, thereby forming a complex body, and burning the complex body to consume the multimer of the fusion protein, the aggregate body comprising the second target material, adhering to the first target material, and being located so as to surround the first target material, the aggregate body having a plurality of first pores unevenly distributed near the first target material and a plurality of second pores scattered over the aggregate body;
• placing a material comprising the porous structure body and the second target material or the precursor of the second target material on the transparent electrode;
• heating the material on the transparent electrode, thereby forming a structure body comprising the porous structure body by the transparent electrode;
• supporting a sensitizing dye by the porous structure body, thereby forming a photoelectrode;
• and
• pouring an electrolyte and sealing the photoelectrode and a counter electrode.

A method for producing a dye-sensitized solar cell, comprising the steps of:

• preparing a substrate comprising a transparent electrode;
• arranging at least one carbon nanotube used as a first target material on the transparent electrode so as to extend in a direction of a thickness of the substrate;
• forming a complex by binding a multimer of a fusion protein to the carbon nanotube, wherein the multimer of the fusion protein has an internal cavity and is formed from the fusion protein that contains a first peptide portion capable of binding to the carbon nanotube, a second peptide portion capable of binding to a second target material or a precursor of the second target material, and a polypeptide portion capable of forming a multimer having an internal cavity, thereby forming a combination body and binding the combination body to a second target material or a precursor of the second target material;
• burning the combination body to consume the multimer of the fusion protein, whereby a structure body having a porous structure body comprising an aggregate body is formed on the transparent electrode, the aggregate body comprising the second target material, adhering to the carbon nanotube, and being located so as to surround the carbon nanotube, the aggregate body having a plurality of first pores unevenly distributed near the carbon nanotube and a plurality of second pores scattered over the aggregate body;
• supporting a sensitizing dye by the porous structure body, thereby forming a photoelectrode;
• and
• pouring an electrolyte and sealing the photoelectrode and a counter electrode.

A dye-sensitized solar cell comprising:

• a substrate comprising a transparent electrode;
• a photoelectric conversion layer provided on the transparent electrode, the photoelectric conversion layer comprising a porous structure body, the porous structure body supporting a sensitizing dye, the porous structure body comprising a first target material and an aggregate body comprising a second target material, the aggregate body adhering to the first target material and being located so as to surround the first target material, the aggregate body having a plurality of first pores unevenly distributed near the first target material and a plurality of second pores scattered over the aggregate body;
• and
• a sealing portion that seals the dye-sensitized solar cell such that the photoelectrode composed of the photoelectric conversion layer and the transparent electrode faces a counter electrode and the photoelectrode and the counter electrode are in contact with an electrolyte.

A dye-sensitized solar cell comprising:

• a substrate comprising a transparent electrode;
• a photoelectric conversion layer provided on the transparent electrode, the photoelectric conversion layer comprising a porous structure body, the porous structure body supporting a sensitizing dye, the porous structure body comprising at least one carbon nanotube used as a first target material and an aggregate body comprising a second target material, the at least one carbon nanotube being arranged to extend in a direction of a thickness of the substrate, the aggregate body adhering to the carbon nanotube and being located so as to surround the carbon nanotube, the aggregate body having a plurality of first pores unevenly distributed near the carbon nanotube and a plurality of second pores scattered over the aggregate body;
• and
• a sealing portion that seals the dye-sensitized solar cell such that the photoelectrode composed of the photoelectric conversion layer and the transparent electrode faces a counter electrode and the photoelectrode and the counter electrode are in contact with an electrolyte.