In:
Applied Physics Letters, AIP Publishing, Vol. 87, No. 22 ( 2005-11-28)
Abstract:
Single-layer high-efficiency green electrophosphorescent light-emitting diodes were fabricated by doping an iridium complex bearing pinene group—tris(5-phenyl-10,10-dimethyl-4-aza- tricycloundeca-2,4,6-triene)Iridium(III)—into a blended host of poly(vinylcarbazole) and 2-(4-biphenylyl)-5-(4-tert-butulphenyl)-1,3,4-oxadiazol. The optimized device shows a turn-on voltage below 4 V, and a very high peak luminescent efficiency of 29.0cd∕A. Comparing with the state-of-the-art electrophosphorescent devices, the present device has a much slower decrease of efficiency with increase of current density; a high efficiency of 20.7cd∕A can still be achieved at a high current density of 150mA∕cm2 (brightness=30800cd∕m2).
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2005
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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