Patent ID: 9118022
Filing Date: 2015-08-25
Classification: C09K,H01L,H05B

Abstract:
1. An organic electroluminescent device comprising at least one compound of the formula (1) or formula (2), where the following applies to the symbols and indices used: X is on each occurrence, identically or differently, CR or N, with the proviso that a maximum of two groups X which are bonded directly to one another stand for N; R is selected on each occurrence, identically or differently, from the group consisting of H, D, F, Cl, Br, I, CN, NO R Ar R Ar is on each occurrence, identically or differently, an aromatic or heteroaromatic ring system having 5-30 aromatic ring atoms, which may be substituted by one or more non-aromatic radicals R R q is on each occurrence, identically or differently, 0, 1, 2 or 3; and wherein the compound of the formula (1) or formula (2) is employed as matrix material for a fluorescent or phosphorescent compound in an emitting layer and/or in that the compound of the formula (1) or formula (2) is employed as electron-transport material in an electron-transport or electron-injection layer and/or in that the compound of the formula (1) or formula (2) is employed in a hole-blocking layer and/or in that the compound of the formula (1) or formula (2) is employed in a hole-transport layer or in a hole-injection layer or in an electron-blocking layer or exciton-blocking layer.