Solar cell having silicon nano-particle emitter

Patent metadata

Field	Value
Publication number	US-9224902-B2
Application number	US-201414229609-A
Country	US
Kind code	B2
Filing date	Mar 28, 2014
Priority date	Nov 27, 2006
Publication date	Dec 29, 2015
Grant date	Dec 29, 2015

Abstract

A silicon solar cell having a silicon substrate includes p-type and n-type emitters on a surface of the substrate, the emitters being doped nano-particles of silicon. To reduce high interface recombination at the substrate surface, the nano-particle emitters are preferably formed over a thin interfacial tunnel oxide layer on the surface of the substrate.

First claim

What is claimed is:

1. A method of fabricating a silicon solar cell having nano-particle silicon emitters comprising the steps of:
providing a silicon substrate having first and second opposing major surfaces;
forming a thin interfacial passivation layer on one of the first and second opposing major surfaces, wherein forming the thin interfacial passivation layer comprises forming a tunnel oxide layer;
forming a first plurality of p-doped emitters formed using silicon nano-par…

Assignees

• Sunpower Corp

Inventors

• Swanson Richard M

Classifications

• H10F77/1433 Primary

  Electricity · mapped topic

• H10F77/147

  Electricity · mapped topic

• H10F77/122

  Electricity · mapped topic

• H10F10/164

  Electricity · mapped topic

• H10F10/11

  Electricity · mapped topic