Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 40, Issue 7, Pages 1896-1901Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/40/7/009
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We report conjugated dendrimers that can be used to fabricate efficient (<= 1.0 lm W-1 at similar to 100 cd m(-2)) deep-blue emission (1931 CIE (x, y) = (0.15, 0.10)) and high luminance (<= 6000 cd m(-2)) organic light emitting diodes (OLEDs). Slab waveguide structures of these materials show low amplified spontaneous emission (ASE) thresholds (>= 50 nJ for 390 nm, 10 ns, 10 Hz, pulsed excitation). In addition, we report OLEDs based on binary blends of the dendrimers with the green light emitting polymer poly(9,9-dioctylfluorene-co-benzothiadiazole): these have low turn on voltages (>= 2.2 V) and produce high efficiency (18.2 lm W-1 at similar to 100 cd m(-2)) green electroluminescence.
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