Organic light emitting devices

US6740429B2 · kind B2 · utility

Assignee

• Xerox Corporation · US

Inventors

• Hany Aziz · Burlington, CA
• Cuong Vong · Hamilton, CA
• Nan-Xing Hu · Oakville, CA
• Zoran D. Popovic · Täby, SE
• Ah-Mee Hor · Mississauga, CA

Key dates

• Filing date: Nov 8, 2001
• Grant date: May 25, 2004
• Expiry date: May 31, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/26

Abstract

An organic light emitting device containing(i) an anode or a first electrode;(ii) a hole transport layer containing, for example, a mixture of a porphyrin and a hole transport material(iii) a mixed region containing a mixture of (1) a hole transport material, and (2) an electron transport material;(iv) a cathode or second electrode, and wherein the organic light emitting device may further contain at least one of(v) an electron transport region interposed between the mixed region and the cathode; and(vi) a thermal protective element coated on one of the anode and cathode.