TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The phosphorescence luminosity material is iridium (Ir), osmium (Os), or ortho metalation complex of platinum (Pt) metal.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (disclosed): The aromatic compound is prepared by putting dihydronaphthalene derivative, 3-biphenylyl boronic acid, sodium carbonate aqueous solution, 1,2-dimethoxyethane, toluene and tetrakis (triphenylphosphine) palladium into three necked flask, refluxing for 10 hours under argon atmosphere, extracting solution with toluene after completion of reaction, filtering, drying, concentrating with magnesium sulfate, and obtaining aromatic compound. Preferred Component: The organic electronic device material is organic electroluminescent element material. The aromatic compound is formula (1-a), (1-b), (1-c), (2-a), (2-b), or (2-c). The light emitting layer contains organic electronic device material as host material. The light emitting layer contains host material and phosphorescent luminosity material. The organic electroluminescent element has electron injection layer between light emitting layer and cathode. The electron injection layer contains nitrogen-containing ring derivative. The organic electroluminescent element has electron carrying layer between light emitting layer and cathode. The electron carrying layer contains organic electronic device material. The organic electroluminescent element has electron carrying layer between light emitting layer and cathode. The electron carrying layer and light emitting layer contain organic electronic device material. The organic electroluminescent element has positive hole transport layer between light emitting layer and anode. The positive hole transport layer contains organic electronic device material. The organic electroluminescent element has reducing dopant to interface area of cathode and organic thin film layer. Preferred Definitions:    Ar1-Ar3=benzene ring structure;    p1,p2=1;    A1,A2=substituted or unsubstituted ring-formed 6-24C monovalent aromatic hydrocarbon or substituted or unsubstituted ring-formed 3-24 atoms monovalent aromatic heterocyclic; and    L1,L2=single bond, substituted or unsubstituted ring-formed 6-24C bivalent aromatic hydrocarbon, or substituted or unsubstituted ring-formed 3-24 atoms bivalent aromatic heterocyclic.    SPECIFIC COMPOUNDS - 264 Compounds (1 or 2) are specifically disclosed e.g. group of formulae (1-1), (1-2), (1-3), (1-4) or (1-5).