ORGANIC ELECTRIC-FIELD LIGHT-EMITTING DEVICE MATERIAL, ORGANIC ELECTRIC-FIELD LIGHT-EMITTING DEVICE FORMED OF SAME, AND METHOD FOR MANUFACTURING ORGANIC ELECTRIC-FIELD LIGHT-EMITTING DEVICE

摘要

A material for organic electroluminescence element, including: a phosphorescent compound; and a discotic liquid-crystalline host compound, wherein the phosphorescent compound has an aspect ratio of molecule core diameter to molecule core thickness (molecule core diameter / molecule core thickness) of at least 3, and wherein a size ratio of the molecular radius of the phosphorescent compound to the molecular radius of the discotic liquid-crystalline host compound (molecular radius of the phosphorescent compound / molecular radius of the discotic liquid-crystalline host compound) is 0.8 to 1.2.