PHOSPHORESCENT HOST TRANSPORTING MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME

摘要

PURPOSE: A phosphorescent host material is provided to improve light emitting efficiency and reducing driving voltage of an organic electroluminescence device by having triplet energy over 2.8 eV. CONSTITUTION: A phosphorescent host material is indicated in chemical formula 1. In chemical formula 1, each of G1-G3 and R1-R4 is selected from a substituted or unsubstituted C4-18 aromatic compound or C4-16 heterocyclic compound. An organic electroluminescence device comprises a first electrode, a second electrode facing the first electrode, and a light-emitting material layer which is placed between the first and second electrode, and consists of red, green and blue light-emitting material patterns. At least one of the red, green and blue light-emitting material patters include the phosphorescent host material.