Polymer light emitting diode

US6313261A · kind A · utility

Assignee

• UNIVERSITY OF DURHAM · GB

Inventors

• Ifor David William Samuel · St Andrews, GB
• Andrew Monkman · Durham, GB
• Eymard Gabriel Francois Joseph Rebourt · Saint-Louis, FR
• Stuart Dailey · Upton-upon-Severn, GB

Key dates

• Filing date: Nov 10, 1999
• Grant date: Nov 6, 2001
• Expiry date: Nov 10, 2019

Classification

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

Abstract

Device adapted for efficient light emission including a plurality of component layers of which a first outer layer is adapted for electron injection, a second opposing outer layer is adapted for hole injection, and plural intermediate layers arranged therebetween for charge semi-conduction. The intermediate layers include at least one semi-conducting polymer adapted for hole transport and/or electron blocking, and at least one semi-conducting polymer adapted for hole blocking and/or election transport. The at least one semi-conducting polymer adapted for electron transport and/or hole blocking comprises polymer selected from a nitrogen and/or sulphur containing polymer which is partially or substantially conjugated.