Journal
CHEMISTRY OF MATERIALS
Volume 22, Issue 6, Pages 2138-2141Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm100100w
Keywords
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Funding
- Research Grants Council of HKSAR [CityU101508]
- National Science Founcdation of China [50773090, 50825304]
- Beijing Natural Science Foundation P. R. China [2072017]
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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.
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