OLEDS containing thermally stable glassy organic hole transporting materials
AssigneesThe Trustees of Princeton University, University of Southern California
InventorsMark E. Thompson, Loy Douglas, Stephen R. Forrest, Bryan E. Koene, Diarmuid O'Brien
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Abstract
Organic light emitting devices comprising a heterostructure for producing electroluminescence having a hole transporting layer with a glass structure. The hole transporting layer comprises a compound having a symmetric molecular structure. The end groups of the symmetric molecule are hole transporting diaryl amine moieties.
Claims32
An organic light emitting device comprising a heterostructure for producing electroluminescence, wherein the heterostructure comprises
- a substrate;
- an anode layer;
- a hole transporting layer having a glass structure, and wherein the hole transporting layer comprises a compound of the formula:
- wherein Ar1 and Ar2 are substituted or unsubstituted arene moieties, with the proviso that Ar1 and Ar2 are different and at least one of Ar1 and Ar2 is unsubstituted, or
- wherein R1 and R2 are, independently of one another, selected from the group consisting of hydrogen, an alkyl group, a phenyl group, a substituted alkyl group and a substituted phenyl group, and wherein R1 and R2 may be bridged;
- an electron transporting layer;
- and
- a cathode layer.
An organic light emitting device comprising a heterostructure for producing electroluminescence, wherein the heterostructure comprises
- a substrate;
- an anode layer;
- a hole transporting layer having a glass structure, wherein the hole transporting layer comprises a compound of the formula:
- an electron transporting layer;
- and
- a cathode layer.
A compound of the formula:
- wherein R1 and R2 are, independently of one another, selected from the group consisting of hydrogen, an alkyl group, a phenyl group, a substituted alkyl group and a substituted phenyl group, and wherein R1 and R2 may be bridged.
A compound of the formula:
A compound of the formula:
Dependencies are inferred from the claim text.