COMPOUND SEMICONDUCTOR SOLAR CELL AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A compound semiconductor solar battery and a manufacturing method thereof are provided to reduce manufacturing costs of the solar battery by forming an impurity diffusion prevention film in the same chamber with a back side electrode. CONSTITUTION: An impurity diffusion prevention film(120) is provided to a substrate and is composed of one metal layer among chrome, cobalt, or copper. An alkali component is added to the impurity diffusion prevention film. The thickness of the impurity diffusion prevention film is 0.01 to 10micrometers. A back side electrode is provided to the impurity diffusion prevention film and is composed of molybdenum. A CIGS system light absorption layer(140) is provided to the back side electrode. A front side transparent electrode(160) is provided to the CIGS system light absorption layer.