| 摘要 |
PURPOSE:To obtain a high electromotive force and a high conversion efficiency by a method wherein a semiconductor layer provided between two electrodes is constituted by a three-layer structure composed of a first layer made of cadmium sulfide, a second layer made of perylene system pigment and a third layer made of phthalocyanine system pigment. CONSTITUTION:A first layer 3 made of cadmium sulfide is provided on the surface of a transparent electrode 2 formed on the surface of an electrode substrate 1. Perylene system pigment is deposited on the surface of the first layer 3 to form a second layer 4. Further, a third layer 5 made of phthalocyanine system pigment is formed on the surface of the second layer 4. Then a facing electrode 6 made of Au or the like is provided on the surface of the third layer 5 by vacuum deposition or the like. As a semiconductor layer in a laminate-type organic solar cell obtained as described above is constituted by a three-layer structure, carriers can be separated at the respective junction planes between the first layer 3 and the second layer 4 and between the second layer 4 and the third layer 5. With this constitution, a high energy conversion efficiency can be obtained and, moreover, short-circuits between the electrodes can be reduced. |
