NOVELTY - Organic electroluminescent compound having anthracene-diamine structures (A) are new.    USE - (A) is useful in organic electroluminescent device (preferably white electroluminescent device) and organic solar cell (all claimed).    ADVANTAGE - (A) provides the organic electroluminescent devices with excellent color purity and luminous efficiency with very good device life.    DETAILED DESCRIPTION - Organic electroluminescent compound having anthracene-diamine structures (A) of formula (I) or (II) are new.    R1, R2 = 6-60C aryl or 5-60C heteroaryl (both further substituted by one or more substituents of halo, 1-60C alkyl, 6-60C aryl, 4-60C heteroaryl, halo-1-30C alkyl, halo-1-30C alkoxy, 1-30C alkyl-6-30C aryl, 6-30C ar(1-30C)alkyl, 6-30C ar(1-30C)alkoxy, 5- or 6-membered heterocycloalkyl containing one or more heteroatom(s) of N, O or S, (3-60C)cycloalkyl, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri-(6- 60C)arylsilyl, adamantyl, (7-60C)bicycloalkyl, (2-60C)alkenyl, (2-60C)alkynyl, (1-60C)alkoxy, CN, (1-60C)alkylamino, 6-60C arylamino, 6-60C ar(1-60C)alkyl, (6-60C)aryloxy, (6-60C)arylthio, 1-60C alkoxycarbonyl, carboxyl, nitro or hydroxyl, provided that the total number of carbons in R1 or R2 is 21-60); and    Ar1-Ar4 = 1-60C alkyl, 6-60C aryl, 4-60C heteroaryl, 3-60C cycloalkyl, tri-1-60C alkylsilyl, di(1-60C)alkyl-(6-60C)arylsilyl, tri(6-60C)arylsilyl, 1-60C alkylamino, or 6-60C arylamino (all optionally substituted by halo, 1-60C alkyl, 6-60C aryl, 4-60C heteroaryl, 5- or 6- membered heterocycloalkyl containing one or more heteroatom(s) of N, O or S, (3-60C) cycloalkyl, tri(1-60C) alkylsilyl, di(1-60C) alkyl(6-60C) arylsilyl, tri(6-60C) arylsilyl, adamantyl, (7-60C) bicycloalkyl, (2-60C) alkenyl, (2-60C) alkynyl, (1-60C) alkoxy, CN, (1-60C) alkylamino, (6-60C) arylamino, (6-60C)ar(1-60C) alkyl, (6-60C)aryloxy, (6-60C)arylthio, (1-60C) alkoxycarbonyl, carboxyl, nitro or hydroxyl), 5- or 6-membered heterocycloalkyl containing one or more heteroatom(s) of N, O or S, H, halo, adamantyl, (7-60C)bicycloalkyl, 1-60C alkoxy, CN, 6-60C ar(1-60C)alkyl, 6-60C aryloxy, 6-60C arylthio, 1-60C alkoxycarbonyl, carboxyl, nitro or hydroxyl.    An INDEPENDENT CLAIM is included for an organic electroluminescent device comprising: a first electrode; a second electrode; and at least one organic layer interposed between the first electrode and the second electrode, where the organic layer comprises an electroluminescent layer (5) comprising (A), an anthracene compound of formula (III) or (IV), and a benzo(a)anthracene compound of formula (V).    R61, R62 = (6-60C)aryl or (4-60C)heteroaryl (both optionally substituted by one or more substituents of 1-60C alkyl, halo-1-60C alkyl, 1-60C alkoxy, 3-60C cycloalkyl, 6-60C aryl, 4-60C heteroaryl, halo, CN, tri-1-60C alkylsilyl, di-1-60C alkyl(6-60C)arylsilyl or tri-6-60C arylsilyl), or 5- or 6-membered heterocycloalkyl containing one or more heteroatoms comprising N, O or S, or (3-60C)cycloalkyl;    R63-R66 = H, 1-60C alkyl, 1-60C alkoxy, halo, 4-60C heteroaryl, 5-60C cycloalkyl or 6-60C aryl, where the heteroaryl, cycloalkyl or aryl may be further substituted by one or more substituents of 1-60C alkyl with optionally halo substituents, 1-60C alkoxy, 3-60C cycloalkyl, halo, CN, tri(1-60C)alkylsilyl, di-1-60C alkyl(6-60C) arylsilyl or tri(6-60C)arylsilyl;    E, F1 = chemical bond, or 6-60C arylene optionally substituted by 1-60C alkyl, 1-60C alkoxy, 6-60C aryl, 4-60C heteroaryl or halo;    Ar21, Ar23 = 9H-fluorene group of formula (aa), 1H-indene group of formula (bb), benzene, naphthalene, triphenylene, phenanthrene, chrysene, pyrene or 4-60C heteroaryl (all substituted by one or more substituents of 1-60C alkyl, 1-60C alkoxy, 6-60C aryl or 4-60C heteroaryl);    Ar22 = 6-60C arylene or 4-60C heteroarylene (both optionally substituted by one or more substituents of 1-60C alkyl, 1-60C alkoxy, 6-60C aryl, 4-60C heteroaryl, or halo) or dihydro-indeno(1,2-b)fluorene group of formula (cc); and    R71-R74 = H, 1-60C alkyl, or 6-60C aryl (all optionally linked to an adjacent substituent via 3-60C alkylene or 3-60C alkenylene with or without a fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring); and    R81-R84 = H, 1-60C alkyl, 1-60C alkoxy, 6-60C aryl, 4-60C heteroaryl or halo (all optionally linked to an adjacent substituent via 3-60C alkylene or 3-60C alkenylene with or without a fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring).    DESCRIPTION OF DRAWING(S) - The figure shows the cross-sectional view of an organic light emitting diode.    Glass (1)    Transparent electrode (2)    Hole injecting layer (3)    Hole transport layer (4)    Electroluminescent layer (5)    Electron transport layer. (6)