ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
申请人:ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
公开号:US20190312218A1
公开(公告)日:2019-10-10
The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the organic electroluminescent compound of the present disclosure, it is possible to provide an organic electroluminescent device having low driving voltage and/or high luminous efficiency properties while exhibiting deep red color compared to a conventional organic electroluminescent device.
As a novel substance having a novel skeleton, an organometallic complex having high emission efficiency and improved color purity is provided. The color purity is improved by reducing the half width of an emission spectrum. The organometallic complex is represented by General Formula (G1). In General Formula (G1), at least one of R
1
to R
4
represents a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms, and the others each independently represent hydrogen or a substituted or unsubstituted alkyl group having 1 to 4 carbon atoms. Note that the case where all of R
1
to R
4
represent alkyl groups each having 1 carbon atom is excluded. Further, R
5
to R
9
each independently represent hydrogen or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.