Semiconductor component for generation of optical radiation

US4644379A · kind A · utility

Assignee

• Asea Aktiebolag · SE

Inventors

• Tomas Hidman
• Christer Ovren

Key dates

• Filing date: Dec 4, 1984
• Grant date: Feb 17, 1987
• Expiry date: Dec 4, 2004

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/824

Abstract

A semiconductor component for electrical generation of optical radiation, for example an LED, is provided. The component includes a semiconductor body that contains a first region of material of a first conductivity, a second region of material of a second conductivity type adjacent to the first region; and a PN junction between these regions. The first region has a central part of a material with a first band gap and a peripheral part laterally surrounding the central part of the first region. The material of the peripheral part has a band gap larger than the bang gap of the central part of the first region. The material of the second region has a larger band gap than the band gap of the central part of the first region.