Array of small contacts for solar cell fabrication

Details Array of small contacts for solar cell fabrication Array of small contacts for solar cell fabrication

2007-05-29

2010-11-23

Cleveland, Michael (Department: 1712)

Coating processes

Electrical product produced

Photoelectric

C427S466000

Reexamination Certificate

active

07838062

ABSTRACT:
Fabrication of a solar cell using a printed contact mask. The contact mask may include dots formed by inkjet printing. The dots may be formed in openings between dielectric layers (e.g., polyimide). Intersections of overlapping dots may form gaps that define contact regions. The spacing of the gaps may be dictated by the alignment of nozzles that dispense the dots. Using the dots as a contact mask, an underlying dielectric layer may be etched to form the contact regions through the underlying dielectric layer. Metal contact fingers may be formed over the wafer to form electrical connections to corresponding diffusion regions through the contact regions.

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