Disclosed is an organic electroluminescent device including a substrate, a
first and second electrodes, and a light-emitting layer formed between
the first electrode and the second electrode, and a hole-blocking layer
formed between the light-emitting layer and the second electrode and
using a material of a chemical formula 1. ##STR00001## In this case, at
least one of A.sub.1 and A.sub.2 is selected from a substituted or
non-substituted aromatic group, a heterocyclic group, an aliphatic group,
halogen, and hydrogen.