Bilayer passivation structure for photovoltaic cells

US6150603A · kind A · utility

Assignee

• HUGHES ELECTRONICS LIMITED · US

Inventors

• Nasser H. Karam · Tustin, US
• James H. Ermer · Burbank, US
• Richard R. King · Thousand Oaks, US
• Moran Haddad · Calabasas, US
• Bruce T. Cavicchi · Burbank, US

Key dates

• Filing date: Apr 23, 1999
• Grant date: Nov 21, 2000
• Expiry date: Apr 23, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/547

Abstract

An improved photovoltaic cell, according to one embodiment, includes a base layer; a primary window layer having a first type of doping, with the primary window layer being disposed over the base layer; and a secondary window layer having the first type of doping, with the secondary window layer being disposed over the primary window layer. In another embodiment, the improved photovoltaic cell has a multilayer back-surface field structure; a base layer disposed over the back-surface field structure; and a primary window layer disposed over the base layer. In yet another embodiment, the photovoltaic cell includes a base layer; and a primary window layer disposed over the base layer, with the primary window layer having a thickness of at least about 1000 Angstroms.