Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Reexamination Certificate
2011-04-12
2011-04-12
Ridley, Basia (Department: 1725)
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
C136S244000, C136S251000, C136S257000, C136S258000, C136S261000
Reexamination Certificate
active
07923625
ABSTRACT:
A back metal electrode, a bottom cell using microcrystalline silicon for a photoelectric conversion layer, a front cell using amorphous silicon for a photoelectric conversion layer, and a transparent front electrode are formed in this order on a supporting substrate. At least one of the concentration of impurities contained in the front photoelectric conversion layer and the concentration of impurities contained in the bottom photoelectric conversion layer is controlled such that the concentration of impurities in the bottom photoelectric conversion layer is higher than the concentration of impurities in the front photoelectric conversion layer. Impurities do not include a p-type dopant or an n-type dopant but are any one, two, or all of carbon, nitrogen, and oxygen.
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Ninomiya Kunimoto
Shima Masaki
NDQ&M Watchstone LLP
Ridley Basia
Sanyo Electric Co,. Ltd.
Trinh Thanh-Truc
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