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US 7,070,867 B2Granted
OLEDs having n-type doping
AssigneeUniversity of Southern California
InventorsMark E. Thompson, Simona Garon
Life of this patent
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Abstract
The present invention provides an organic light emitting device comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a host material, an alkali metal or an alkaline earth metal, and a metal binding agent. In a preferred embodiment, the organic layer is an electron transport layer in which the metal binding agent may confine the alkali metal or the alkaline earth metal.
Claims19
An organic light emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer disposed between the anode and the cathode,
- wherein the organic layer comprises a host material, an alkali metal or an alkaline earth metal, and a metal binding agent;
- and wherein
- (a) the metal binding agent is electrically neutral;
- or
- (b) the metal binding agent comprises a compatibilizer;
- or
- (c) the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl;
- or
- (d) the metal binding agent is electrically neutral, and the metal binding agent comprises a compatibilizer;
- or
- (e) the metal binding agent is electrically neutral, and the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl;
- or
- (f) the metal binding agent comprises a compatibilizer, and the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl;
- or
- (g) the metal binding agent is electrically neutral, the metal binding agent comprises a compatibilizer, and the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl.
20 more elements
An organic light emitting device comprising:
- an anode;
- a cathode;
- a first organic layer disposed between the anode and the cathode, wherein
- the first organic layer is an emissive layer;
- and
- a second organic layer disposed between the first organic layer and the cathode, wherein
- the second organic layer comprises an electron transporting host material, an alkali metal, and a metal binding agent;
- and wherein
- (a) the metal binding agent is electrically neutral;
- or
- (b) the metal binding agent comprises a compatibilizer;
- or
- (c) the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl;
- or
- (d) the metal binding agent is electrically neutral, and the metal binding agent comprises a compatibilizer;
- or
- (e) the metal binding agent is electrically neutral, and the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl;
- or
- (f) the metal binding agent comprises a compatibilizer, and the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl;
- or
- (g) the metal binding agent is electrically neutral, the metal binding agent comprises a compatibilizer, and the host material is selected from a material having the formula
- wherein m is 2 to 8 and each R is independently selected from alkyl, aryl and aralkyl.
22 more elements
An organic light emitting device comprising:
- an anode;
- a cathode;
- and
- an organic layer disposed between the anode and the cathode,
- wherein the organic layer comprises a host material, an alkali metal or an alkaline earth metal, and a metal binding agent;
- and wherein the metal binding agent is electrically neutral.
3 more elements
Dependencies are inferred from the claim text.