Electroluminescent arrangements
First Claim
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1. Electroluminescing arrangement comprising a hole-injecting layer comprising thiophene of the formula (I) whereinR1 and R2 denote, independently of one another, hydrogen, optionally substituted C1-C20-alkyl, CH2OH or C6-C14-aryl, or R1 and R2 together denote —
- (CH2)m—
CH2—
with m=0 to 12 or C6-C14-arylene, and n is an integer from 5 to 100, wherein the thiophene of the formula (I) is in cationic form in the presence of a polymeric sulfonic acid or a polymeric carboxylic acid as a polyanion;
an emitter layer; and
a pair of electrodes, wherein at least one of said electrodes is transparent and consists of a material selected from the group consisting of metal oxides and semi-transparent metal films and wherein said hole-injecting layer is directly located on a transparent electrode.
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Abstract
Electroluminescing arrangement containing hole-injecting and/or electron-injecting layers, the polymeric organic conductors being chosen from the group consisting of polyfurans, polypyrroles, polyanilines, polythiophenes and polypyridines.
110 Citations
8 Claims
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1. Electroluminescing arrangement comprising a hole-injecting layer comprising thiophene of the formula (I)
wherein R1 and R2 denote, independently of one another, hydrogen, optionally substituted C1-C20-alkyl, CH2OH or C6-C14-aryl, or R1 and R2 together denote — - (CH2)m—
CH2—
with m=0 to 12 or C6-C14-arylene, andn is an integer from 5 to 100, wherein the thiophene of the formula (I) is in cationic form in the presence of a polymeric sulfonic acid or a polymeric carboxylic acid as a polyanion;
an emitter layer; and
a pair of electrodes, wherein at least one of said electrodes is transparent and consists of a material selected from the group consisting of metal oxides and semi-transparent metal films and wherein said hole-injecting layer is directly located on a transparent electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
providing an electroluminescing arrangement according to claim 1, and applying a voltage to the arrangement sufficient to cause electroluminescence.
- (CH2)m—
Specification