NOVELTY - An organic phosphorescent iridium complex compound, is new.    USE - In the organic electroluminescent device and for organic solar cell (claimed).    ADVANTAGE - The Compound has excellent luminous efficiency and surprisingly improved lifetime.    DETAILED DESCRIPTION - An organic phosphorescent iridium complex compound of formula (I), is new.    L'=organic ligand;R1-R6=H, (1-60C)alkyl, (1-60C)alkoxy, (3-60C)cycloalkyl, 5- or 6-membered heterocycloalkyl containing oxygen, nitrogen or sulfur, (6-60C) aryl, (5-60C) heteroaryl, halo, mono or di(1-6C)alkylamino, mono or di(6-60C)arylamino, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl or tri(6-60C)arylsilyl (all alkyl, alkoxy, cycloalkyl, aryl, heteroaryl optionally substituted by at least one substituent(s) selected from (1-60C)alkyl optionally halogen substituent(s), halogen, cyano, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri(6-60C)arylsilyl, (1-60C) alkoxy, (3-60C)cycloalkyl, mono or di(1-60C)alkylamino, mono or di (6-60C) arylamino, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl and (6-60C) aryl);    n=1-3.    Each of R1 through R6 is linked to another adjacent group from R1 through R6 via (3-12C)alkylene or (3-12C)alkenylene optionally fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring (where all rings optionally substituted by at least one substituent(s) selected from (1-60C)alkyl optionally halogen substituent(s), halogen, cyano, tri(1-60C)alkylsilyl, di(1-60C)alkyl(6-60C)arylsilyl, tri(6-60C)arylsilyl, (1-60C) alkoxy, (3-60C)cycloalkyl, mono or di(1-60C)alkylamino, mono or di (6-60C) arylamino, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl and (6-60C) aryl). An INDEPENDENT CLAIM is included for an organic electroluminescent device comprising of a first electrode; a second electrode; and at least one organic layer(s) interposed between the first electrode and the second electrode; where the organic layer comprises an electroluminescent region containing an organic electroluminescent compound (I), at least one host(s) selected from 1,3,5-tricarbazolylbenzene, polyvinylcarbazole, m-biscarbazolylphenyl, 4,4'4"-tri(N-carbazolyl)triphenylamine, 1,3,5-tri(2-carbazolylphenyl)benzene, 1,3,5-tris(2-carbazolyl-5-methoxyphenyl)benzene, bis(4-carbazolylphenyl)silane and at least one host(s) selected from compounds of formula (II) to (V).    R91 to R94=H, halogen, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl, 5- or 6-membered heterocycloalkyl containing at least one heteroatom(s) selected from N, O and 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, cyano, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (1-60C)alkyloxy, (1-60C)alkylthio, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl, carboxyl, nitro or hydroxyl (where alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, arylsilyl, alkylsilyl, alkylamino or arylamino optionally substituted by at least one substituent(s) selected from halogen, (1-60C)alkyl (6-60C)aryl, (4-60C)heteroaryl, a 5-or 6-membered heterocycloalkyl containing at least one heteroatom(s) selected from N, O and 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, cyano, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (1-60C)alkyloxy, (1-60C)alkylthio, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl, carboxyl, nitro and hydroxyl);    L1 and L2=group of formula (Ia) and (Ib);    M1=bivalent or trivalent metal;y=0 or 1;    Q'=(6-60C)aryloxy or tri(6-60C)arylsilyl (optionally substituted by (1-60C)alkyl or (6-60C)aryl);    X=O, S or Se;    ring A'=oxazole, thiazole, imidazole, oxadiazole, thiadiazole, benzoxazole, benzothiazole, benzimidazole, pyridine or quinoline;    ring B'=phenyl or naphthyl (optionally (1-60C)alkyl substituent(s)), or pyridine or quinoline, and optionally substituted by (1-60C)alkyl;    R101 to R104=H, halogen, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl, a 5- or 6-membered heterocycloalkyl containing at least one heteroatom(s) selected from N, O and 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, cyano, (1-60C)alkylamino (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (1-60C)alkyloxy, (1-60C)alkylthio, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl, carboxyl, nitro or hydroxyl (where the alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, arylsilyl, alkylsilyl, alkylamino or arylamino optionally substituted by at least one substituent(s) selected from halogen, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl, a 5-or 6-membered heterocycloalkyl containing at least one heteroatom(s) selected from N, O and 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, cyano, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (1-60C)alkyloxy, (1-60C)alkylthio, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl, carboxyl, nitro and hydroxyl).    Each of R91 to R94 optionally linked to an adjacent substituent via (3-60C)alkylene or (3-60C)alkenylene optionally a fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring and each of R101 to R104 optionally linked to an adjacent substituent via (3-60C)alkylene or (3-60C)alkenylene optionally a fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring (where all rings optionally substituted by at least one substituent(s) selected from halogen, (1-60C)alkyl, (6-60C)aryl, (4-60C)heteroaryl, a 5-or 6-membered heterocycloalkyl containing at least one heteroatom(s) selected from N, O and 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, cyano, (1-60C)alkylamino, (6-60C)arylamino, (6-60C)ar(1-60C)alkyl, (1-60C)alkyloxy, (1-60C)alkylthio, (6-60C)aryloxy, (6-60C)arylthio, (1-60C)alkoxycarbonyl, (1-60C)alkylcarbonyl, (6-60C)arylcarbonyl, carboxyl, nitro and hydroxyl). The pyridine or quinoline optionally form a chemical bond with R101 to form a fused ring. Provided that:    (1) when M1 is bivalent metal, then y is o; and    (2) when M1 is trivalent metal, then y is 1.