Patent ID: 8415032

Claim:
A material for an organic electroluminescence device, comprising: a phosphorescent metal complex represented by the following formula (A10): in formula (A10), each of R 1a to R 1h independently represents a hydrogen atom, a fluorine atom, a methyl group, an ethyl group, an isopropyl group, an n-butyl group, an isobutyl group, a neopentyl group, an n-hexyl group, a phenyl group or a naphthyl group, each of which may be substituted with a methyl group, an isopropyl group or a neopentyl group, a methyl group, an ethyl group, an isopropyl group, an n-butyl group, an isobutyl group, a neopentyl group or an n-hexyl group, each of which is substituted with 1 or more and not more than 10 fluorine atoms, or a phenyl group or a naphthyl group, each of which may be substituted with a methyl group, an isopropyl group or a neopentyl group, each of which is substituted with 1 or more and not more than 10 fluorine atoms; R 1a to R 1h may be bonded to each other to form a ring; X-Y represents a monoanionic bidentate ligand represented by the following I-1, I-4 or I-5; and n represents 2 or 3: wherein each of Rx, Ry and Rz independently represents a hydrogen atom, a fluorine atom, an alkyl group having not more than 6 carbon atoms, a phenyl group, an alkyl group having not more than 6 carbon atoms and substituted with one or more fluorine atoms, or a phenyl group substituted with one or more fluorine atoms, provided that a content of a fluorine atom in the phosphorescent metal complex is 7% by mass or more.