05399502 is referenced by 506 patents and cites 7 patents.

An electroluminescent device includes a semiconductor layer (4) in the form of a thin dense polymer film comprising at least one conjugated polymer, a first contact layer (5) in contact with a first surface of the semiconductor layer, and a second contact layer (3) in contact with a second surface of the semiconductor layer. The polymer film (4) of the semiconductor layer has a sufficiently low concentration of extrinsic charge carriers that on applying an electric field between the first and second contact layers across the semiconductor layer so as to render the second contact layer positive relative to the first contact layer charge carriers are injected into the semiconductor layer and radiation is emitted from the semiconductor layer. The polymer film can be poly (p-phenyenevinylene) [PPV] of formula (I) wherein the phenylene ring may optionally carry one or more substituents each independently selected from alkyl (preferably methyl), alkoxy (preferably methoxy or ethoxy), halogen (preferably chlorine or bromine) or nitro. A method of manufacture of an electroluminescent device includes steps of depositing a thin layer of a precursor polymer onto a substrate and then heating the precursor polymer to a high temperature to form the conjugated polymer.

Title
Method of manufacturing of electrolumineschent devices
Application Number
634117
Publication Number
5399502
Application Date
May 5, 1993
Publication Date
March 21, 1995
Inventor
Donal D Bradley
Cambridge
GB
Jeremy H Burroughes
New York
NY, US
Richard H Friend
Cambridge
GB
Agent
Merchant & Gould Smith Edell Welter & Schmidt
Assignee
Cambridge Display Technology
GB
IPC
H01L 21/44
View Original Source