COMPOSITE MEMBRANE FOR SUPER STRAIGHT SOLAR CELL, PROCESS FOR PRODUCING THE COMPOSITE MEMBRANE FOR SUPER STRAIGHT SOLAR CELL, COMPOSITE MEMBRANE FOR SUBSTRAIGHT SOLAR CELL, AND PROCESS FOR PRODUCING THE COMPOSITE MEMBRANE FOR SUBSTRAIGHT SOLAR CELL

摘要

This invention provides a composite membrane for a super straight solar cell or for a substraight solar cell. The composite membrane comprises a transparent electroconductive film and an electroconductive reflective film. The transparent elctroconductive film is formed by coating a composition or dispersion liquid, for a transparent electrocondutive film, containing fine particles of an electroconductive oxide by a wet coating method. The electroconductive reflective film is formed by coating a composition, for en electroconductive reflective film, containing metallic nanoparticles by a wet coating method. The average diameter of pores, which appear on a photoelectric converting layer-side or transparent electroconductive film-side contact face of the electroconductive reflective film, is not more than 100 nm. The average depth at which the pores are located is not more than 100 nm. The number density of the pores is not more than 30 pores/µm2.