Implementation of anti-reflection coating to enhance light out-coupling in organic light-emitting devices
We report significant enhancement of light out-coupling in organic light-emitting devices (OLEDs) by means of anti-reflection coating of magnesium fluoride (MgF 2) on the backside of glass substrate. OLEDs were fabricated by employing the green electrophosphorescent material fac tris-(2-phenylpyridi...
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Published in | Journal of luminescence Vol. 128; no. 3; pp. 525 - 530 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.03.2008
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | We report significant enhancement of light out-coupling in organic light-emitting devices (OLEDs) by means of anti-reflection coating of magnesium fluoride (MgF
2) on the backside of glass substrate. OLEDs were fabricated by employing the green electrophosphorescent material
fac tris-(2-phenylpyridine) iridium [Ir(ppy)
3
] doped in 4,4′,8-
N,
N-8-dicarbazole-biphenyl (CBP) and 0.4
wt% tetrafluorotetracyano-quinodimethane (F4-TCNQ)-doped naphthylphenylbiphenyl diamine (α-NPD) as hole transport layer (HTL). Single-layer MgF
2 with the thickness of
λ/4 was then vacuum deposited on the backside of glass substrate of OLED. About two-fold enhancement in luminance with anti-reflection coating of MgF
2 has been observed. |
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ISSN: | 0022-2313 1872-7883 |
DOI: | 10.1016/j.jlumin.2007.09.028 |