TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The organic layer comprises metal(s) including organic metals of Group 1, Group 2, 41h period and 5th period transition metals, lanthanide metals or d-transition elements.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): Iridium compound (1) is prepared by mixing iridium trichloride (IrCl3) and ligand compound in a solvent (such as alcohol) at a molar ratio of 1:2-3, and the mixture is heated under reflux before isolating diiridium dimer. The isolated diiridium dimer is then heated with a primary ligand compound in organic solvent to provide an organic phosphorescent iridium compound having the ratio of primary ligand: subsidiary ligand of 1:2 as the final product. The reaction is carried out with silver trifluoromethylsulfonate (AgCF3SO3), sodium carbonate (Na2CO3) or sodium hydroxide (NaOH) mixed with organic solvent such as 2-ethoxyethanol or 2-methoxyethylether. Iridium compound (1) may be prepared by mixing IrCl3 and a primary ligand compound in a solvent (such as alcohol) at a molar ratio of 1:2-3, and the mixture is heated under reflux before isolating diiridium dimer. The isolated diiridium dimer is then heated with the subsidiary ligand compound in organic solvent to provide an organic phosphorescent iridium compound having the ratio of primary ligand: subsidiary ligand of 2:1 as the final product. The molar ratio of the primary ligand compound to the subsidiary ligand in the final product is determined by appropriate molar ratio of the reactant depending on the composition. The reaction may be carried out with AgCF3SO3, Na2CO3 or NaOH mixed with organic solvent such as 2-ethoxyethanol, 2-methoxyethylether or 1,2-dichloroethane. The iridium compound (1) is also prepared by mixing iridium complex and the primary ligand compound in glycerol at a molar ratio of 1:2-3, and the mixture is heated under reflux to obtain organic phosphorescent iridium complex coordinated with three primary ligands. Preferred Compound: Iridium compound (1) is one or more of 6 iridium compounds, i.e. compounds (2)-(6).R11-R30=R1.Preferred Component: The organic layer comprises compound(s) from arylamine compounds or styrylarylamine compounds. EXAMPLE - 3-Aminonaphthalene-2-carboxylic acid (1 g) was dissolved in tetrahydrofuran (50 ml), and the solution was lowered to 0 degrees C. The solution was slowly added with phenyllithium (11.9 ml), and stirred for 2 hours. Aqueous ammonium chloride solution was added to the reaction mixture. The resultant mixture was extracted with diethyl ether, and the extract filtered under reduced pressure. Purification via silica gel column chromatography gave amide compound (A) (0.79 g, 60%). Amide compound (A) (1.29 g), acetophenone (0.55 ml), acetic acid (7.13 ml) and sulfuric acid (0.04 ml) were charged to a reaction vessel, and stirred under reflux in the presence of argon atmosphere. When the reaction was completed, the reaction mixture was cooled to room temperature, and an excess amount of aqueous ammonium hydroxide was added. Solid precipitate was filtered, washed with distilled water, and purified via silica gel column chromatography to obtain pyrrole compound (B). Pyrrole compound (B) (0.6 g) and iridium chloride (0.25 g) were dissolved in 2-ethoxyethanol (9 ml) and distilled water (3 ml), and the solution was stirred under reflux in the presence of argon atmosphere for 24 hours. When the reaction was completed, the reaction mixture was cooled to room temperature. Solid produced was filtered and dried to obtain iridium-chloride containing compound (C) (0.37 g). Compound (C) (0.37 g), 2,4-pentanedione (0.06 ml) and sodium carbonate (0.13 g) were dissolved in 2-ethoxyethanol (10 ml), and the solution was heated for 4 hours. When the reaction was completed, the reaction mixture was cooled to room temperature. Solid precipitate was filtered and purified via silica gel column chromatography (dichloromethane (CH2Cl2):hexane=1:1). Recrystallization from CH2Cl2/hexane gave iridium organic electroluminescent iridium compound (1) (0.14 g, 37%) as red crystal.