Electro-luminescent material, solid state electro-luminescent device and process for fabrication thereof

US5667905A · kind A · utility

Assignee

• Consorzio Per La Ricerca Sulla Microelettronica Nel Mezzogiorno · IT

Inventors

• Salvatore Ugo Campisano · Catania, IT
• Salvatore Lombardo · Catania, IT
• Giuseppe Ferla · Catania, IT
• Albert Polman · Amsterdam, NL
• Gerard Nicolaas Van Den Hoven · Maria Hoop, NL

Key dates

• Filing date: Oct 17, 1995
• Grant date: Sep 16, 1997
• Expiry date: Oct 17, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/917

Abstract

An electro-luminescent material and solid state electro-luminescent device comprising a mixed material layer formed of a mixture of silicon and silicon oxide doped with rare earth ions so as to show intense room-temperature photo- and electro-luminescence is described. The luminescence is due to internal transitions of the rare earth ions. The mixed material layer has an oxygen content ranging from 1 to 65 atomic % and is produced by vapor deposition and rare earth ions implant. A separated implant with elements of the V or III column of the periodic table of elements gives rise to a PN junction. The so obtained structure is then subjected to thermal treatment in the range 400.degree.-1100.degree. C.