05247190 is referenced by 1391 patents and cites 5 patents.

An electroluminescent device comprises 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 firm (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.

Title
Electroluminescent devices
Application Number
7/634117
Publication Number
5247190
Application Date
December 28, 1990
Publication Date
September 21, 1993
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
Lynxvale
GB
Cambridge Capital Management
GB
Cambridge Research and Innovation
GB
IPC
H01L 29/29
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