Patent ID: 9478762
Filing Date: 2016-10-25
CPC Classification: C09K,H01L,H05B,Y02B,Y02E

Claim Text:
1. A mixture comprising (a) a compound A which contains at least one phosphorescent emitter unit, and (b) a compound B which contains at least one emitting unit, wherein compound A is a polymer which comprises in the side chain a hole injection/hole transport unit that is triarylamine, benzidine, tetraaryl-paraphenylenediamine, triarylphosphine, phenothiazine, phenoxazine, dihydrophenazine, thianthrene, dibenzo-para-dioxin, phenoxathiyne, carbazole, azulene, thiophene, pyrrole or furan derivatives or further O-, S- or N-containing heterocycles having a high highest occupied molecular orbital (HOMO) and compound B is a low molecular weight compound having a molecular weight of less than 4000 g/mol and in which the at least one emitting unit of compound B is a phosphorescent emitter unit wherein the phosphorescence emitter units are compounds which comprise copper, molybdenum, tungsten, rhenium, ruthenium, osmium, rhodium, iridium, palladium, platinum, silver, gold or europium.