Transparent organic light-emitting devices with LiF/Yb: Ag cathode

W. F. Xie; K. C. Lau; C. S. Lee; S. T. Lee

doi:10.1016/j.tsf.2007.02.008

Transparent organic light-emitting devices with LiF/Yb: Ag cathode

W. F. Xie, K. C. Lau, C. S. Lee, S. T. Lee

Centre of Super-Diamond and Advanced Films

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

20 Citations (Scopus)

Abstract

Highly transparent organic light-emitting devices (TOLEDs) based on LiF/Yb:Ag cathode are reported. The device with a structure of Indium tin oxide/N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biph-enyl-4, 4′-diamine (50 nm)/tris (8-hydroxyquinoline) aluminum (50 nm)/LiF(0.5 nm)/Yb:Ag (15 nm, volume ratio 1:1) shows about the same luminances and spectra from both sides. At a current density of 20 mA/cm², the luminance and electroluminescent efficiency of the top/bottom side are 165/167 cd/m² and 0.825/0.835 cd/A, respectively. We attribute the characteristics to the high transmittance and low reflectivity of Yb:Ag cathode. The results suggest that LiF/Yb:Ag electrode can be used as an effective and stable cathode in TOLEDs or top-emitting OLEDs. © 2007 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	6975-6977
Journal	Thin Solid Films
Volume	515
Issue number	17
DOIs	https://doi.org/10.1016/j.tsf.2007.02.008
Publication status	Published - Jun 2007

Research Keywords

Cathodes
Evaporation
Indium tin oxide
Ytterbium

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title = "Transparent organic light-emitting devices with LiF/Yb: Ag cathode",

abstract = "Highly transparent organic light-emitting devices (TOLEDs) based on LiF/Yb:Ag cathode are reported. The device with a structure of Indium tin oxide/N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biph-enyl-4, 4′-diamine (50 nm)/tris (8-hydroxyquinoline) aluminum (50 nm)/LiF(0.5 nm)/Yb:Ag (15 nm, volume ratio 1:1) shows about the same luminances and spectra from both sides. At a current density of 20 mA/cm2, the luminance and electroluminescent efficiency of the top/bottom side are 165/167 cd/m2 and 0.825/0.835 cd/A, respectively. We attribute the characteristics to the high transmittance and low reflectivity of Yb:Ag cathode. The results suggest that LiF/Yb:Ag electrode can be used as an effective and stable cathode in TOLEDs or top-emitting OLEDs. {\textcopyright} 2007 Elsevier B.V. All rights reserved.",

keywords = "Cathodes, Evaporation, Indium tin oxide, Ytterbium",

author = "Xie, {W. F.} and Lau, {K. C.} and Lee, {C. S.} and Lee, {S. T.}",

year = "2007",

month = jun,

doi = "10.1016/j.tsf.2007.02.008",

language = "English",

volume = "515",

pages = "6975--6977",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

number = "17",

}

TY - JOUR

T1 - Transparent organic light-emitting devices with LiF/Yb

T2 - Ag cathode

AU - Xie, W. F.

AU - Lau, K. C.

AU - Lee, C. S.

AU - Lee, S. T.

PY - 2007/6

Y1 - 2007/6

N2 - Highly transparent organic light-emitting devices (TOLEDs) based on LiF/Yb:Ag cathode are reported. The device with a structure of Indium tin oxide/N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biph-enyl-4, 4′-diamine (50 nm)/tris (8-hydroxyquinoline) aluminum (50 nm)/LiF(0.5 nm)/Yb:Ag (15 nm, volume ratio 1:1) shows about the same luminances and spectra from both sides. At a current density of 20 mA/cm2, the luminance and electroluminescent efficiency of the top/bottom side are 165/167 cd/m2 and 0.825/0.835 cd/A, respectively. We attribute the characteristics to the high transmittance and low reflectivity of Yb:Ag cathode. The results suggest that LiF/Yb:Ag electrode can be used as an effective and stable cathode in TOLEDs or top-emitting OLEDs. © 2007 Elsevier B.V. All rights reserved.

AB - Highly transparent organic light-emitting devices (TOLEDs) based on LiF/Yb:Ag cathode are reported. The device with a structure of Indium tin oxide/N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biph-enyl-4, 4′-diamine (50 nm)/tris (8-hydroxyquinoline) aluminum (50 nm)/LiF(0.5 nm)/Yb:Ag (15 nm, volume ratio 1:1) shows about the same luminances and spectra from both sides. At a current density of 20 mA/cm2, the luminance and electroluminescent efficiency of the top/bottom side are 165/167 cd/m2 and 0.825/0.835 cd/A, respectively. We attribute the characteristics to the high transmittance and low reflectivity of Yb:Ag cathode. The results suggest that LiF/Yb:Ag electrode can be used as an effective and stable cathode in TOLEDs or top-emitting OLEDs. © 2007 Elsevier B.V. All rights reserved.

KW - Cathodes

KW - Evaporation

KW - Indium tin oxide

KW - Ytterbium

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U2 - 10.1016/j.tsf.2007.02.008

DO - 10.1016/j.tsf.2007.02.008

M3 - RGC 21 - Publication in refereed journal

SN - 0040-6090

VL - 515

SP - 6975

EP - 6977

JO - Thin Solid Films

JF - Thin Solid Films

IS - 17

ER -

Transparent organic light-emitting devices with LiF/Yb: Ag cathode

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Research Keywords

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