Organic light emitting device containing a hole injection enhancement layer

US5998803A · kind A · utility

Assignees

• THE TRUSTEES OF PRINCETON UNIVERSITY · US
• University of Southern California · US

Inventors

• Stephen R. Forrest · Ann Arbor, US
• Paul E. Burrows · Chattaroy, US
• Mark E. Thompson · Villa Park, US
• Vladimir Bulovic · Lexington, US

Key dates

• Filing date: May 29, 1997
• Grant date: Dec 7, 1999
• Expiry date: May 29, 2017

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/321
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

The present invention is directed to organic light emitting devices comprised of a heterostructure for producing electroluminescence, wherein the heterostructure includes a hole injection enhancement layer between a hole transporting layer and an indium tin oxide anode layer. The hole injection enhancement layer may be comprised of 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA), bis(1,2,5-thiadiazolo)-p-quinobis(1,3-dithiole) (BTQBT), or other suitable, rigid organic materials. The present invention is further directed to methods of fabricating such devices.