Solar cell and a production method therefor

US4997491A · kind A · utility

Assignee

• Mitsubishi Electric Corporation · JP

Inventors

• Shigeru Hokuyo · Itami, JP
• Takao Oda · Osaka, JP
• Hideo Matsumoto · Moriyama, JP

Key dates

• Filing date: Nov 15, 1989
• Grant date: Mar 5, 1991
• Expiry date: Nov 15, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S438/933

Abstract

A solar cell includes a first conductivity type semiconductor substrate having two opposed surfaces, a second conductivity type first semiconductor layer disposed in the substrate at the first surface of the semiconductor substrate, a second conductivity type second semiconductor layer deposited on the first surface of the semiconductor substrate except for the first semiconductor layer production region, producing a pn junction with the semiconductor substrate having no reverse direction voltage blocking capability, a first conductivity type third semiconductor layer deposited on the second semiconductor layer, a first electrode covering the first semiconductor layer and connecting the third semiconductor layer with the first semiconductor layer, and a second electrode disposed at a second surface of the semiconductor substrate.