Bilayer passivation structure for photovoltaic cells

US6255580A · kind A · utility

Assignee

• The Boeing Company · 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 20, 2000
• Grant date: Jul 3, 2001
• Expiry date: Apr 20, 2020

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.