Substrate for use in preparing solar cells

US8828791B2 · kind B2 · utility

Assignee

• Mossey Creek Solar, LLC · US

Inventor

• John Carberry · Jefferson City, US

Key dates

• Filing date: Jul 20, 2012
• Grant date: Sep 9, 2014
• Expiry date: Feb 28, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50

Abstract

Conductive material is combined with other substances to form a composite material for use as a conductive back face substrate for a thin silicon wafer solar cell. In at least one embodiment, a conductive composite substrate material is fabricated by filling granular conductive material with a mineral or ceramic or other small particulate with a low CTE; the composite is cast and fired so that it has an electrically conductive continuous phase and a discontinuous phase that will control and match the CTE of the substrate to be equal to or close to that of silicon, thereby diminishing the effects of bowing from CTE-mismatch.