申请人:Steudel Annette
公开号:US20110186826A1
公开(公告)日:2011-08-04
An electroluminescent material comprises the following structural unit:
where X is selected from a group consisting of NR, O, S, SO, SO
2
, CR
2
, PR, POR, BR, SiR
2
; where R is a substituent group and Ar
1
and Ar
2
comprise aromatic rings; and, wherein Ar
1
or Ar
2
is fused to a further aryl system Ar
3
. An optical device comprises a first electrode for injection of positive charge carriers, a second electrode for injection of negative charge carriers and a layer located between the first and second electrode comprising the electroluminescent material.