System and method for eliminating short circuit current paths in

Details System and method for eliminating short circuit current paths in System and method for eliminating short circuit current paths in

1982-10-21

1984-06-05

Weisstuch, Aaron

Metal working

Method of mechanical manufacture

Assembling or joining

29572, 29584, 156627, 136258, 2041292, H01L 3118

Patent

active

044519702

ABSTRACT:
Systems and methods for detecting and eliminating short circuit current paths through photovoltaic devices of the type including at least one semiconductor region overlying a substrate and a layer of conductive light transmissive material overlying the at least one semiconductor region are disclosed. The short circuit current paths which are eliminated extend through the at least one semiconductor region from the substrate to the layer of conductive light transmissive material. The resistivity of the short circuit current path is increased substantially at the interface between the conductive light transmissive material and the semiconductor region by isolating electrically the conductive light transmissive material from the short circuit current path.
The isolation can be provided by removing the transparent conductive material from electrical contact or connection with the short circuit current path. The isolation also can be provided by depositing a body of insulating material onto the semiconductor region over an area including a short circuit current path prior to the deposition of the conductive light transmissive material. Further, the short circuit current path can be detected and located by applying a voltage to discrete areas of the device through a conductive solution which path then can be eliminated as described above.

REFERENCES:
patent: 4385971 (1983-05-01), Swartz

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