In:
Journal of Physics D: Applied Physics, IOP Publishing, Vol. 43, No. 20 ( 2010-05-26), p. 205102-
Abstract:
A chromatic-stable and easily fabricated white organic light-emitting diode with a colour conversion hole injection layer (CC-HIL) has been investigated. The emission layer (EML) was composed of the fluorescent dye p -bis( p − N , N -diphenyl-aminostyryl)benzene doped into the host 2-( t -butyl)-9,10-di(2-naphthyl)anthracene. A red fluorescent polymer poly(2-methoxy-5-[2′-ethylhexyloxy]- p -phenylenevinylene) (MEH-PPV) with hole transport characteristics and relatively high absorbance to blue electroluminescence was used as the CC-HIL. The CIE colour coordinates at (0.33, 0.35) almost remained unchanged under driving current densities from 20 mA cm −2 to 400 mA cm −2 while the current efficiencies reached 3.5 cd A −1 and 4.65 cd A −1 at 20 mA cm −2 and 400 mA cm −2 , respectively. The improved performance was attributed mainly to an enhanced out-coupling efficiency and better carrier balance in the EML.
Type of Medium:
Online Resource
ISSN:
0022-3727
,
1361-6463
DOI:
10.1088/0022-3727/43/20/205102
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2010
detail.hit.zdb_id:
209221-9
detail.hit.zdb_id:
1472948-9
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