Electroluminescent device with polyphenyl hydrocarbon hole transport layer

US6596415B2 · kind B2 · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Jianmin Shi · Webster, US
• Shiying Zheng · Webster, US
• Ching W. Tang · Rochester, US

Key dates

• Filing date: Apr 26, 2001
• Grant date: Jul 22, 2003
• Expiry date: May 16, 2021

Classification

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

Abstract

An organic multilayer electroluminescent device including an anode and cathode, and comprising therebetween:a hole transport layer; andan electron transport layer disposed in operative relationship with the hole transport layer;wherein:the hole transport layer includes an organic compound having the formula: wherein:Ar is an aryl moiety;n is an integer of from 1 to 6; andsubstituents R1 and R2 are each individually hydrogen, or alkyl of from 1 to 24 carbon atoms; aryl or substituted aryl of from 5 to 28 carbon atoms; or heteroaryl or substituted heteroaryl of from 5 to 28 carbon atoms; or fluorine, chlorine, bromine; or cyano group.