METHOD OF FORMING CONTACTS FOR A BACK-CONTACT SOLAR CELL

摘要

Methods of forming contacts for solar cells are described. In one embodiment, a method includes forming a silicon layer above a substrate, forming and patterning a solid-state p-type dopant source on the silicon layer, forming an n-type dopant source layer over exposed regions of the silicon layer and over a plurality of regions of the solid-state p-type dopant source, and heating the substrate to provide a plurality of n-type doped silicon regions among a plurality of p-type doped silicon regions.

主权项

1. A solar cell, comprising:
a dielectric layer formed on a substrate; a plurality of n-type dopant-containing silicon regions formed between a plurality of p-type dopant-containing silicon regions; and trenches formed in the plurality of n-type dopant-containing silicon regions and partially in the substrate, wherein the trenches are formed between the plurality of n-type dopant-containing silicon regions and the p-type dopant-containing silicon regions; and conductive contacts in contact with the plurality of n-type dopant-containing silicon regions and the p-type dopant-containing silicon regions.