Durch einen Aufsatz f�r Gaswaschflaschen, Spritzflaschen u. s. W. mit Abschlussvorrichtung

A New Structure of Tandem Solar Cell with Amorphous Silicon and Polysilicon

“…We use amorphous silicon as a top cell, and polysilicon as a bottom cell. H. Takakura has calculated by theory that the efficiency will exceed 30% for a-Si/ poly-Si tandem solar cell [8][9][10].…”