Top-emitting organic light-emitting diodes using Cs/Al/Ag cathodes

Jong Tae Lim; Chang Hyun Jeong; Mi Suk Kim; June Hee Lee; Jung Woon Bae; Geun Young Yeom

doi:10.1143/JJAP.46.4296

Top-emitting organic light-emitting diodes using Cs/Al/Ag cathodes

Jong Tae Lim, Chang Hyun Jeong, Mi Suk Kim, June Hee Lee, Jung Woon Bae, Geun Young Yeom

Department of Advanced Materials Science and Engineering

Sungkyunkwan University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A semi-transparent cathode composed of Cs (0.5 nm)/Al (2.0nm)/Ag (20 nm) at the wavelength of 515nm exhibited the transmittance of 52% and the reflectance of 46%, respectively. The top-emitting device with the glass/Ag (100 nm)/tin-doped indium oxide (ITO, 125nm)/4,4′,4″-tris[2- naphthylphenyl-l-phenylamino]triphenylamine (2-TNATA, 30nm)/4,4′-bis[N-(1- napthyl)-N-phenyl-amino]-biphenyl (NPB, 15nm)/tris(8-quinolinolato) aluminum(III) (Alq₃, 55nm)/Cs (0.5nm)/Al (2nm)/ Ag (20nm)/Alq ₃ (52 nm) structure showed the maximum luminance of 77,200 cd/m ². Also, the external quantum efficiency and the power efficiency at about 1,000 cd/m² were 1.9% and 2.5 lm/W, respectively. It shows about 2 times higher luminous efficiency, compared to the same device structure having lithium fluoride instead of cesium.

Original language	English
Pages (from-to)	4296-4299
Number of pages	4
Journal	Japanese Journal of Applied Physics
Volume	46
Issue number	7 A
DOIs	https://doi.org/10.1143/JJAP.46.4296
State	Published - 4 Jul 2007

Keywords

Aperture ratio
Cesium
TEOLED
Top emission
Transparent cathode

Access to Document

10.1143/JJAP.46.4296

Cite this

@article{cb9dc077f8b64698942610b478bb7a46,

title = "Top-emitting organic light-emitting diodes using Cs/Al/Ag cathodes",

abstract = "A semi-transparent cathode composed of Cs (0.5 nm)/Al (2.0nm)/Ag (20 nm) at the wavelength of 515nm exhibited the transmittance of 52\% and the reflectance of 46\%, respectively. The top-emitting device with the glass/Ag (100 nm)/tin-doped indium oxide (ITO, 125nm)/4,4′,4″-tris[2- naphthylphenyl-l-phenylamino]triphenylamine (2-TNATA, 30nm)/4,4′-bis[N-(1- napthyl)-N-phenyl-amino]-biphenyl (NPB, 15nm)/tris(8-quinolinolato) aluminum(III) (Alq3, 55nm)/Cs (0.5nm)/Al (2nm)/ Ag (20nm)/Alq 3 (52 nm) structure showed the maximum luminance of 77,200 cd/m 2. Also, the external quantum efficiency and the power efficiency at about 1,000 cd/m2 were 1.9\% and 2.5 lm/W, respectively. It shows about 2 times higher luminous efficiency, compared to the same device structure having lithium fluoride instead of cesium.",

keywords = "Aperture ratio, Cesium, TEOLED, Top emission, Transparent cathode",

author = "Lim, \{Jong Tae\} and Jeong, \{Chang Hyun\} and Kim, \{Mi Suk\} and Lee, \{June Hee\} and Bae, \{Jung Woon\} and Yeom, \{Geun Young\}",

year = "2007",

month = jul,

day = "4",

doi = "10.1143/JJAP.46.4296",

language = "English",

volume = "46",

pages = "4296--4299",

journal = "Japanese Journal of Applied Physics",

issn = "0021-4922",

publisher = "Institute of Physics",

number = "7 A",

}

TY - JOUR

T1 - Top-emitting organic light-emitting diodes using Cs/Al/Ag cathodes

AU - Lim, Jong Tae

AU - Jeong, Chang Hyun

AU - Kim, Mi Suk

AU - Lee, June Hee

AU - Bae, Jung Woon

AU - Yeom, Geun Young

PY - 2007/7/4

Y1 - 2007/7/4

N2 - A semi-transparent cathode composed of Cs (0.5 nm)/Al (2.0nm)/Ag (20 nm) at the wavelength of 515nm exhibited the transmittance of 52% and the reflectance of 46%, respectively. The top-emitting device with the glass/Ag (100 nm)/tin-doped indium oxide (ITO, 125nm)/4,4′,4″-tris[2- naphthylphenyl-l-phenylamino]triphenylamine (2-TNATA, 30nm)/4,4′-bis[N-(1- napthyl)-N-phenyl-amino]-biphenyl (NPB, 15nm)/tris(8-quinolinolato) aluminum(III) (Alq3, 55nm)/Cs (0.5nm)/Al (2nm)/ Ag (20nm)/Alq 3 (52 nm) structure showed the maximum luminance of 77,200 cd/m 2. Also, the external quantum efficiency and the power efficiency at about 1,000 cd/m2 were 1.9% and 2.5 lm/W, respectively. It shows about 2 times higher luminous efficiency, compared to the same device structure having lithium fluoride instead of cesium.

AB - A semi-transparent cathode composed of Cs (0.5 nm)/Al (2.0nm)/Ag (20 nm) at the wavelength of 515nm exhibited the transmittance of 52% and the reflectance of 46%, respectively. The top-emitting device with the glass/Ag (100 nm)/tin-doped indium oxide (ITO, 125nm)/4,4′,4″-tris[2- naphthylphenyl-l-phenylamino]triphenylamine (2-TNATA, 30nm)/4,4′-bis[N-(1- napthyl)-N-phenyl-amino]-biphenyl (NPB, 15nm)/tris(8-quinolinolato) aluminum(III) (Alq3, 55nm)/Cs (0.5nm)/Al (2nm)/ Ag (20nm)/Alq 3 (52 nm) structure showed the maximum luminance of 77,200 cd/m 2. Also, the external quantum efficiency and the power efficiency at about 1,000 cd/m2 were 1.9% and 2.5 lm/W, respectively. It shows about 2 times higher luminous efficiency, compared to the same device structure having lithium fluoride instead of cesium.

KW - Aperture ratio

KW - Cesium

KW - TEOLED

KW - Top emission

KW - Transparent cathode

UR - https://www.scopus.com/pages/publications/34547828916

U2 - 10.1143/JJAP.46.4296

DO - 10.1143/JJAP.46.4296

M3 - Article

AN - SCOPUS:34547828916

SN - 0021-4922

VL - 46

SP - 4296

EP - 4299

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 7 A

ER -

Top-emitting organic light-emitting diodes using Cs/Al/Ag cathodes

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this