Solar cell and method of making same

Details Solar cell and method of making same Solar cell and method of making same

1992-12-22

1994-01-18

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

437 2, 437181, 437189, 437195, H01L 3106, H01L 3118, H01L 310224

Patent

active

052796825

ABSTRACT:
An improved solar cell of the type including a semiconductor substrate having a shallow p-n junction adjacent its front surface, a rear electrode affixed in adherent mechanical and electrical contact with the rear surface of the semiconductor substrate, and a front generally grid-shaped electrode including an array of narrow, elongate, parallel fingers and at least one bus bar extending at right angles to the fingers in electrical contact therewith affixed in mechanically adherent and low resistance electrical contact with the front surface of the semiconductor substrate. The improvement includes the removal of the bus bar portion of the front grid-shaped electrode from intimate mechanical and electrical contact with the front surface of the semiconductor substrate. The improvement increases the open circuit voltage and efficiency of the solar cell, and allows the bus bar portion of the grid shaped electrode to be formed of materials different from the finger portions of that electrode thereby providing cost advantages and design flexibility without detriment to solar cell efficiency. A method of making the improved solar cell also is disclosed.

REFERENCES:
patent: 4698455 (1987-10-01), Cavicchi
patent: 5084107 (1992-01-01), Deguchi et al.

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