High efficiency red light-emitting element, light-emitting element material and new iridium complex consisting of iridium complex

摘要

PROBLEM TO BE SOLVED: To provide a red light emitting element superior in coloring characteristic and a coloring element material for realizing the red light emitting element.;SOLUTION: This system uses a light emitting element material exhibiting characteristics of external quantum efficiency not less than 5% and emission λmax not less than 590 nm and composed of a compound having a partial structure expressed by a general formula 1.;COPYRIGHT: (C)2001,JPO