A new blue emitter, 9,9-bis-(3- (9-phenyl-carbazoyl))-2,7-dipryenylfluorene (DCDPF), has been synthesized and characterized. Organic light-emitting devices (OLEDs) using DCDPF as a non-doped emitter exhibits deep-blue emission with a peak at 458 nm and CIE coordinates of (0.15, 0.15). The maximum efficiency of the device is 4.4 cd/A (3.1 lm/W). The results suggest that the introduction of carbazole units at the 9-position of fluorene provides an effective way to suppress molecular aggregation which would cause red shift in emission.
ORGANIC MOLECULES FOR USE IN OPTOELECTRONIC DEVICES
申请人:CYNORA GMBH
公开号:US20190177303A1
公开(公告)日:2019-06-13
The invention relates to an organic molecule for the use in optoelectronic devices. According to the invention, the organic molecule has
a first chemical moiety with a structure of formula I,
and
two second chemical moieties with a structure of formula II,
wherein
# represents the binding site of a single bond linking the first chemical moiety to the second chemical moiety;
V is selected from the group consisting of CN and CF
3
; and
W is the bond linking the first chemical moiety to one of the two second chemical moieties.
作者:Silu Tao、Yechun Zhou、Chun-Sing Lee、Xiaohong Zhang、Shuit-Tong Lee
DOI:10.1021/cm100100w
日期:2010.3.23
A new blue emitter, 9,9-bis-(3- (9-phenyl-carbazoyl))-2,7-dipryenylfluorene (DCDPF), has been synthesized and characterized. Organic light-emitting devices (OLEDs) using DCDPF as a non-doped emitter exhibits deep-blue emission with a peak at 458 nm and CIE coordinates of (0.15, 0.15). The maximum efficiency of the device is 4.4 cd/A (3.1 lm/W). The results suggest that the introduction of carbazole units at the 9-position of fluorene provides an effective way to suppress molecular aggregation which would cause red shift in emission.