| 摘要 |
PROBLEM TO BE SOLVED: To conduct a valence electron control as well as to increase a photoelectric current by extending the excitation life of an organic molecule by a method wherein an organic thin film layer is composed of the homorgenous mixed film of an organic p-type semiconductor layer and an organic n-type semiconductor layer. SOLUTION: An organic solar battery is manufactured by forming an organic n-type semiconductor such as a triphenylmethane derivative, for example, and an organic p-type semiconductor such as a film formed by uniformly mixing a porphyrin derivative, for example, between two electrodes. At this time, the organic thin film layer, formed by uniformly mixing porphyrin derivative, is formed into a thin film using a solution formed by dissolving the organic n-type semiconductor and the p-type semiconductor in a solvent with which both semiconductors can be dissolved. The organic thin film layer, which is obtained as above-mentioned, can be continuously changed from p-type to n-type or n-type to p-type by changing mixture ratio only, namely, the organic thin film layer can be valence electron controlled. Besides, by uniformly mixing the triphenylmethane derivative and the porphyrin derivative, carrier density and photoelectric current can be increased greatly when compared with the material used indevidually. |
