Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent
1996-10-04
1999-07-27
Chapman, Mark
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
136256, H01L 3100
Patent
active
059284382
ABSTRACT:
A solar cell having self-aligned metal electrodes and underlying relatively deep emitter regions joined by relatively shallow emitter regions under the surface not covered by the electrodes is formed in a semiconductive substrate by forming relatively shallow p+ and n+ diffusion regions on the front and back surfaces, respectively, of a silicon semiconductive substrate, screen printing aluminum onto the front surface of the substrate in a desired electrode pattern, heat treating the developing cell to form the relatively deep p+ type emitter regions underneath the electrode pattern, while growing an oxide passivation layer over the uncovered portions of the substrate surface, applying an antireflective coating to the front surface in the regions not covered by the electrodes, and screen printing silver over the electrodes on the front surface and over the back surface of the solar cell.
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Kochka Edgar L
Meier Daniel L
Salami Jalal
Shibata Akio
Chapman Mark
Ebara Solar, Inc.
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