Patent ID: 6281428
Filing Date: 2001-08-28
Classification: H01L,Y02E

Abstract:
A photovoltaic generator comprising:a substrate;an insulating layer provided on said substrate;a plurality of first impurity diffusion zones formed on said insulating layer;a plurality of second impurity diffusion zones deep enough to reach said insulating layer and of an opposite polarity to that of said first impurity diffusion zones, said second impurity diffusion zones and said first impurity diffusion zones being alternately positioned on the surface of said substrate to form a plurality of substantially vertical pn junctions;a plurality of third impurity diffusion zones provided on the surface of said first impurity diffusion zones and said second impurity diffusion zones opposite to said insulating layer and of the same polarity as that of said second impurity diffusion zones, one end of each of said third impurity diffusion zones connecting to the adjacent one of said second impurity diffusion zones while the other end connecting to the adjacent one of said first impurity diffusion zones so that the third impurity diffusion zone strides over one of said plurality of vertical pn junctions;a plurality of fourth impurity diffusion zones formed on the surface of the adjacent one of said first impurity diffusion zones and the adjacent one of said second impurity diffusion zones opposite to said insulating layer and being a heavily doped impurity diffusion zones of the same polarity as that of said first impurity diffusion zones each of said fourth impurity diffusion zones connecting to the adjacent one of said first impurity diffusion zones without contact with the adjacent one of said third impurity diffusion zones that connects to the same one of said first impurity diffusion zones and striding over at most one of said plurality of vertical pn junctions;a plurality of thin-film electrodes each connecting the adjacent one of said fourth impurity diffusion zones and the adjacent one of said second impurity diffusion zones and/or the adjacent one of said third impurity diffusion zones on the adjacent one of said second impurity diffusion zones; anda plurality of isolation zones each provided between said plurality of thin-film electrodes.