TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic electric device has primary electrode, organic layer and secondary electrode, which are sequentially laminated. The organic layer comprises at least one of light-emitting layer (405), hole injection layer, hole transport layer (404), electron injection layer and electron transport layer (406). Preferred Definitions:    Ar1,Ar2=1-50C alkyl (optionally substituted by H, deuterium, halo, 2-20C alkenyl, 1-20C alkoxy, 6-20C aryl, 6-20C aryl (substituted by deuterium), 7-20C arylalkyl, 8-20C aryl alkenyl, 2-20C heterocyclyl, acetylene or nitrile), 2-60C heterocyclyl (optionally substituted by H, deuterium, halo, 1-20C alkyl, 2-20C alkenyl, 1-20C alkoxy, 6-20C aryl amine, 6-60C aryl, 6-20C aryl (substituted by deuterium), 7-20C arylalkyl, 8-20C aryl alkenyl, 2-20C heterocyclyl, nitrile, acetylene or hetero atom chosen from O, N, S, Si or P), 2-20C alkenyl (optionally substituted by H, deuterium, halo, 1-20C alkyl, 2-20C alkenyl, 1-20C alkoxy, 6-20C aryl amine, 6-60C aryl, 6-20C aryl (substituted with deuterium), 7-20C arylalkyl, 8-20C aryl alkenyl, 2-20C heterocyclyl, nitrile or acetylene), 1-30C alkoxy (optionally substituted by H, deuterium, halo, 2-20C alkenyl, 1-20C alkoxy, 6-20C aryl, 6-20C aryl (substituted by deuterium), 7-20C arylalkyl, 8-20C aryl alkenyl, 2-20C heterocyclyl, nitrile or acetylene), 6-30C aryloxy (optionally substituted by H, deuterium, halo, 1-20C alkyl, 2-20C alkenyl, 1-20C alkoxy, 6-60C aryl, 6-20C aryl (substituted with deuterium), 7-20C arylalkyl, 8-20C aryl alkenyl, 2-20C heterocyclyl, nitrile or acetylene), 6-30C aryl silyl (optionally substituted by H, deuterium, halo, 1-20C alkyl, 2-20C alkenyl, 1-20C alkoxy, 6-60C aryl, 6-20C aryl (substituted with deuterium), 7-20C arylalkenyl, 8-20C aryl alkenyl, 2-20C heterocyclyl, nitrile or acetylene), or 6-60C aryl (optionally substituted by H, deuterium, halo, 1-20C alkyl, 1-20C alkoxy, 1-20C alkylamine, 1-20C alkyl thiophene, 6-20C aryl thiophene, 2-20C alkenyl, 2-20C alkynyl, 3-20C heterocycloalkyl, 6-20C aryl, 6-20C aryl (substituted with deuterium), 8-20C aryl alkenyl, silane, B, Ge or 2-20C heterocyclyl);    L1,L2=6-60C aryl (optionally substituted by nitro, nitrile, halo, silane, 1-20C alkyl, 1-20C alkoxy, 6-20C aryl, 2-20C heterocyclyl or amino), fluorenyl (optionally substituted by H, deuterium, halo, 2-20C alkenyl, 1-20C alkoxy, 6-20C aryl, 6-20C aryl (substituted with deuterium), 7-20C arylalkyl, 8-20C aryl alkenyl, 1-50C alkyl, 2-20C heterocyclyl, nitrile or acetylene), 3-60C heteroaryl (optionally substituted by nitro, nitrile, halo, 1-20C alkyl, 1-20C alkoxy, 6-20C aryl, 2-20C heterocyclyl or amino), or divalent (un)substituted 1-60C aliphatic hydrocarbyl;    m,n=0-4;    R',R"=1-50C alkyl (optionally substituted by H, deuterium, halo, 2-20C alkenyl, 1-20C alkoxy, 6-20C aryl, 6-20C aryl (substituted by deuterium), 7-20C arylalkyl, 8-20C aryl alkenyl, 2-20C heterocyclyl, nitrile or acetylene), or 6-60C aryl (optionally substituted by H, deuterium, halo, 1-20C alkyl, 1-20C alkoxy , 1-20C alkyl amine, 1-20C alkyl thiophene, 6-20C aryl thiophene, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 6-20C aryl (substituted by deuterium), 8-20C aryl alkenyl, silane, B, Ge or 2-20C heterocyclyl);and    R+ R?=spiro compound.    Adjacent groups of R?, R?, Ar1 and Ar2 bonded with each other to form (un)substituted, (un)saturated ring.    SPECIFIC COMPOUNDS - 166 Benzofluorene-containing compounds e.g. 1-(5,5-dimethyl-7-phenyl-5H-benzo(b)fluoren-10-yl)-4-phenylbenzene of formula (Ia), 1-(4-(5,5-dimethyl-7-phenyl-5H-benzo(b)fluoren-10-yl)phenyl)naphthalene, 2-(4-(5,5-dimethyl-7-phenyl-5H-benzo(b)fluoren-10-yl)phenyl)naphthalene, 1-(5,5-dimethyl-7-phenyl-5H-benzo(b)fluoren-10-yl)-4-methoxybenzene, and 2-(4-(5,5-dimethyl-7-phenyl-5H-benzo(b)fluoren-10-yl)phenyl)pyridine, are specifically claimed.