SOLAR CELL EMITTER REGION FABRICATION APPARATUS

Solar cell emitter regions fabrication is described. In an example, a species mask, e.g., a shadow mask, is provided between a plasma source and a semiconductor wafer. The species mask includes an opening pattern having several openings with respective opening widths and pitches. Species emitted by...

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Bibliographic Details
Main Authors BAI, Xiao, QIU, Taiqing
Format Patent
LanguageEnglish
Published 16.07.2020
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Summary:Solar cell emitter regions fabrication is described. In an example, a species mask, e.g., a shadow mask, is provided between a plasma source and a semiconductor wafer. The species mask includes an opening pattern having several openings with respective opening widths and pitches. Species emitted by the plasma source pass through the openings in the species mask and implant in the semiconductor wafer to form several emitter region fingers having respective finger widths and pitches. In an embodiment, the opening widths and pitches vary across the species mask and the emitter region finger widths and pitches are uniform across the semiconductor wafer.
Bibliography:Application Number: US201716342509