OLEDs containing thermally stable glassy organic hole transporting materials
AssigneesThe Trustees of Princeton University, University of Southern California
InventorsMark E. Thompson, Loy Douglas, Diarmuid O'Brien, Bryan E. Koene, Stephen R. Forrest
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Abstract
The present invention is directed to 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 amine moieties having an unsaturated linkage between two arenes.
Claims22
An organic light emitting device comprising a heterostructure for producing electroluminescence, wherein the heterostructure comprises a hole transporting layer having a glass structure, and wherein the hole transporting layer comprises a compound having the formula:
- ##STR15## wherein A consists of one or two phenyl groups and R.sub.1 and R.sub.2 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 R.sub.1 and R.sub.2 may be bridged.
Dependencies are inferred from the claim text.