Method of producing photovoltaic element

Details Method of producing photovoltaic element Method of producing photovoltaic element

2005-06-07

2005-06-07

Nhu, David (Department: 2818)

Semiconductor device manufacturing: process

Making device or circuit responsive to nonelectrical signal

Responsive to electromagnetic radiation

C438S488000

Reexamination Certificate

active

06902948

ABSTRACT:
A method of producing a photovoltaic element is provided which comprises the steps of immersing in an electrolytic solution a photovoltaic element including a back surface reflecting layer, a semiconductor layer and a transparent electrode layer successively stacked on a substrate, applying a forward voltage to the photovoltaic element to effect an electrolytic treatment to reduce the transparent electrode layer in a short-circuit portion of the photovoltaic element, thereby selectively removing a short-circuit current path in the photovoltaic element due to a defect, wherein a voltage gradient when the forward voltage applied to the photovoltaic element is lowered to 0 V or a such forward voltage as to effect no reduction reaction of the transparent electrode layer is controlled to be −15 V/s to −0.1 V/s, whereby a shunt portion is selectively removed with reliability without increasing a shunt path.

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