申请人:Novaled GmbH
公开号:US20180337339A1
公开(公告)日:2018-11-22
The present invention relates to an. organic semiconductive layer which is an electron transport layer and/or an electron injection layer and/or an n-type charge generation layer, the organic semiconductive layer comprising at least one compound of formula (1) wherein R
1
and R
2
are each independently selected from C
1
to C
16
alkyl; Ar
1
is selected from C
6
to C
14
arylene or C
3
to C
12
heteroarylene; Ar
2
is independently selected from C
14
to C
40
arylene or C
8
to C
40
heteroarylene; R
3
is independently selected from H, C
1
to C
12
alkyl or C
10
to C
20
aryl; wherein each of Ar
1
, Ar
2
and R
3
may each independently be unsubstituted or substituted with at least one C
1
to C
12
alky group; n is 0 or 1; and m is 1 in case of n=0; and m is 1 or 2 in case of n=1, phosphine oxide compounds comprised therein and to organic electroluminescent devices comprising such layers and compounds.