申请人:Kim Hyun
公开号:US20090165860A1
公开(公告)日:2009-07-02
The present invention relates to an electroluminescent device. More specifically, the electroluminescent device according to the present invention is comprised of a first electrode; a second electrode; and at least one organic layer(s) interposed between the first electrode and the second electrode; and the organic layer comprises one or more organic electroluminescent compound(s) represented by Chemical Formula (1) as host material:
L
1
L
2
M(Q)
y
Chemical Formula 1
wherein, the ligands, L
1
and L
2
are independently selected from the following structures:
wherein, M represents a divalent or trivalent metal;
y is 0 when M is a divalent metal, while y is 1 when M is a trivalent metal;
Q represents (C6-C60)aryloxy or tri(C6-C60)arylsilyl, and the aryloxy or triarylsilyl of Q may be further substituted by (C1-C60)alkyl or (C6-C60)aryl.
The electroluminescent devices according to the invention exhibit excellent color purity and luminous efficiency.