摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photoelectric element comprising an electron transport layer having excellent electron transport characteristics and a sufficiently large reaction interface, achieving low resistance loss, and excellent in photoelectric conversion efficiency. <P>SOLUTION: The photoelectric element comprises a first electrode 3, a second electrode 4, an electron transport layer 1 and a positive-hole transport layer 5 intervening between the first electrode 3 and the second electrode 4, an electrolytic solution, and a sensitizing dye. The electron transport layer 1 contains an organic compound having an oxidation-reduction part which can undergo repeated oxidation and reduction. The electrolytic solution has a function of stabilizing a reduction state of the oxidation-reduction part. The organic compound and the electrolytic solution form a gel layer 2. The sensitizing dye is provided in contact with the electron transport layer 1. The positive-hole transport layer 5 contains a charge transport medium made of an organic compound having a function of reducing the sensitizing dye in an oxidized form. The oxidation-reduction potential of the charge transport medium is in the range of 0.3 to 1.0 V with respect to a silver/silver chloride reference electrode. <P>COPYRIGHT: (C)2013,JPO&INPIT |