In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 56, No. 3S ( 2017-03-01), p. 03BC01-
Abstract:
We present bottom-emission, inverted, tandem phosphorescent organic light-emitting devices (PHOLEDs) using a multilayer charge generation layer (CGL) of MoO 3 /Al/MoO 3 (MAM), which exhibits a maximum external quantum efficiency of 40% and current efficiency of 120 cd/A. In this inverted tandem structure, the feature of MAM shows a high optical transmittance (approximately 90%) in visible light, an efficient charge generation property, and a relatively smooth morphology (root mean square of ∼0.336 nm) providing an efficient CGL to connect the bottom and top display units. In addition, the device structure of ITO/LiF/TAPC/MAM/BPhen:CS 2 CO 3 /BPhen/LiF/Al was proposed to capacitance characterization, and the results demonstrated that using the ultrathin Al of ∼2 nm in a MAM structure exhibited a more efficient CGL for high performance inverted tandem PHOLEDs.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.7567/JJAP.56.03BC01
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2017
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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