Process for fabricating array of photovoltaic elements connected

Details Process for fabricating array of photovoltaic elements connected Process for fabricating array of photovoltaic elements connected

1996-05-15

1998-08-25

Weisstuch, Aaron

Semiconductor device manufacturing: process

Making device or circuit responsive to nonelectrical signal

Responsive to electromagnetic radiation

136244, 136290, 205656, H01L 3118, H01L 3120

Patent

active

057982848

ABSTRACT:
Disclosed is a process for fabricating an array of photovoltaic elements connected in series, which can be used as a high-efficiency solar battery, at low cost and with high reliability. The process for fabricating the array of photovoltaic elements connected in series is characterized in that a step (.alpha.) for forming insulating strips of second electrode material is carried out by immersing in a solution a substrate having a first electrode thereon, and on which the second electrode is deposited, and an opposed electrode of a concentrated electric field type positioned opposite the surface of the second electrode in the vicinity thereof and applying a voltage between the first electrode and the opposed electrode. Further, it is characterized in that a step (.beta.) for electrochemically passivating electrical defect regions in a photovoltaic layer is carried out by immersing in a solution the substrate having a first electrode thereon, and on which the second electrode is deposited, and a flat-plate-shaped opposed electrode positioned opposite the surface of the second electrode and applying a voltage between the first electrode and the opposed electrode. The process is further characterized in that the step .alpha. and the step .beta. are carried out at the same time or in succession independently of each other.

REFERENCES:
patent: 4729970 (1988-03-01), Nath et al.
patent: 5084400 (1992-01-01), Nath et al.
patent: 5320723 (1994-06-01), Kawakami

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