Photoelectric conversion device

[0136]

[0137] [Production of Porous Metal Oxide Semiconductor]

[0138] SnO doped with fluorine was formed by vacuum evaporation on a transparent substrate 1 made of glass. 2 To form the transparent conductive film, the porous metal oxide semiconductor layer 3 was formed on the transparent conductive film 2 by the following method.

[0139]As the electrode substrate 8 on which the transparent conductive film 2 is formed on the transparent substrate 1, FTO glass (manufactured by Nippon Sheet Glass Co., Ltd.) is used, and the film thickness of about 6 μm and the area of ​​about 5 mm×10 mm are formed on the surface by the screen printing method. On the surface of the transparent conductive film 2 side, print a commercially available titanium oxide paste (manufactured by Catalyst Chemicals Co., Ltd., trade name: TSP-18NR, particle size 20nm), and then use the screen printing method on the same area, A commercially available titanium oxide paste (manufactured by Catalyst Kasei Co

[0148]

[0149] A solar cell was produced in the same manner as in Example 1 except that 1-methyl-3-ethylimidazolium bis(trifluoromethanesulfonyl)imide was used as the solvent for the electrolyte layer 5 .

[0170]

[0171] A synthesis example of the redox couple of the present invention will be given below, but the synthesis method is not limited thereto, and known materials and synthesis methods can be used for production.

[0172] [Redox Pairs: Synthesis of Reductants]

[0173] Dissolve 1 molar equivalent of 5-methyl-2-mercapto-1,3,4-thiadiazole and 0.5 molar equivalent of potassium carbonate in methanol, and perform ultrasonic bath treatment while stirring until the potassium carbonate dissolves and disappears until (about 2.5 hours). Thereafter, the solid was removed using filter paper, the solvent was distilled off with a rotary evaporator, and the resulting white solid was washed with dichloromethane, followed by vacuum drying to synthesize 5-methyl-2-mercapto-1. 3,4-thiadiazole potassium salt. The reaction yield was 70%.

[0174]Next, 1 molar equivalent of the synthesized compound (concentration: 1M) was dissolved in acetone, and a solution (concentration: 1M) of 1 molar