Patent ID: 9219242
Filing Date: 2015-12-22
Classification: C09B,C09K,H01L

Abstract:
1. An organic electroluminescence devices, comprising: a pair of electrodes, and an organic compound layer in-between the pair of electrodes, wherein the organic compound layer comprises an emitting layer comprising: a first material; a second material; and a third material, singlet energy EgS(H1) of the first material, singlet energy EgS(H2) of the second material, and singlet energy EgS(D) of the third material satisfy formulae (1) and (2) below, a difference ΔST(H1) between the singlet energy EgS(H1) of the first material and an energy gap Eg the second material is a compound comprising a fused aromatic hydrocarbon group comprising 10 to 30 ring carbon atoms or a fused aromatic heterocyclic group comprising 8 to 30 ring atoms, and the third material is a fluorescent material: