Transparent organic light-emitting diodes consisting of a metal oxide multilayer cathode

Seung Yoon Ryu; Joo Hyon Noh; Byoung Har Hwang; Chang Su Kim; Sung Jin Jo; Jong Tae Kim; Hyeon Seok Hwang; Hong Koo Baik; Hee Seong Jeong; Chang Ho Lee; Seung Yong Song; Seung Ho Choi; Si Young Park

doi:10.1063/1.2835044

Transparent organic light-emitting diodes consisting of a metal oxide multilayer cathode

Seung Yoon Ryu
, Joo Hyon Noh
, Byoung Har Hwang
, Chang Su Kim
, Sung Jin Jo
, Jong Tae Kim
, Hyeon Seok Hwang
, Hong Koo Baik
, Hee Seong Jeong
, Chang Ho Lee
, Seung Yong Song
, Seung Ho Choi
, Si Young Park

Department of Physics

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

117 Scopus citations

Abstract

The authors have developed a semitransparent, multilayered cathode of indium tin oxide (ITO)/Ag/tungsten oxide (W O3) for transparent organic light-emitting diodes. The device showed a weak negative differential resistance (NDR), until the operating voltage of 8 V was reached. NDR was due to the resonant tunneling by both the quantum barrier and quantum well. The silver oxide (Ag2 O) on the Ag metal was confirmed by x-ray photoelectron spectroscopy, and the energy levels of Ag2 O were quantized due to the quantum size effect and this produced the resonant tunneling channels. The device using ITOAgW O3 with a LiFAl bilayer was superior to those devices which only used ITO or W O3, mainly because the out coupling was enhanced by employing a W O3 material, which is much more transparent than ITO.

Original language	English
Article number	023306
Journal	Applied Physics Letters
Volume	92
Issue number	2
DOIs	https://doi.org/10.1063/1.2835044
State	Published - 2008

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10.1063/1.2835044

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title = "Transparent organic light-emitting diodes consisting of a metal oxide multilayer cathode",

abstract = "The authors have developed a semitransparent, multilayered cathode of indium tin oxide (ITO)/Ag/tungsten oxide (W O3) for transparent organic light-emitting diodes. The device showed a weak negative differential resistance (NDR), until the operating voltage of 8 V was reached. NDR was due to the resonant tunneling by both the quantum barrier and quantum well. The silver oxide (Ag2 O) on the Ag metal was confirmed by x-ray photoelectron spectroscopy, and the energy levels of Ag2 O were quantized due to the quantum size effect and this produced the resonant tunneling channels. The device using ITOAgW O3 with a LiFAl bilayer was superior to those devices which only used ITO or W O3, mainly because the out coupling was enhanced by employing a W O3 material, which is much more transparent than ITO.",

author = "Ryu, \{Seung Yoon\} and Noh, \{Joo Hyon\} and Hwang, \{Byoung Har\} and Kim, \{Chang Su\} and Jo, \{Sung Jin\} and Kim, \{Jong Tae\} and Hwang, \{Hyeon Seok\} and Baik, \{Hong Koo\} and Jeong, \{Hee Seong\} and Lee, \{Chang Ho\} and Song, \{Seung Yong\} and Choi, \{Seung Ho\} and Park, \{Si Young\}",

year = "2008",

doi = "10.1063/1.2835044",

language = "English",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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T1 - Transparent organic light-emitting diodes consisting of a metal oxide multilayer cathode

AU - Ryu, Seung Yoon

AU - Noh, Joo Hyon

AU - Hwang, Byoung Har

AU - Kim, Chang Su

AU - Jo, Sung Jin

AU - Kim, Jong Tae

AU - Hwang, Hyeon Seok

AU - Baik, Hong Koo

AU - Jeong, Hee Seong

AU - Lee, Chang Ho

AU - Song, Seung Yong

AU - Choi, Seung Ho

AU - Park, Si Young

PY - 2008

Y1 - 2008

N2 - The authors have developed a semitransparent, multilayered cathode of indium tin oxide (ITO)/Ag/tungsten oxide (W O3) for transparent organic light-emitting diodes. The device showed a weak negative differential resistance (NDR), until the operating voltage of 8 V was reached. NDR was due to the resonant tunneling by both the quantum barrier and quantum well. The silver oxide (Ag2 O) on the Ag metal was confirmed by x-ray photoelectron spectroscopy, and the energy levels of Ag2 O were quantized due to the quantum size effect and this produced the resonant tunneling channels. The device using ITOAgW O3 with a LiFAl bilayer was superior to those devices which only used ITO or W O3, mainly because the out coupling was enhanced by employing a W O3 material, which is much more transparent than ITO.

AB - The authors have developed a semitransparent, multilayered cathode of indium tin oxide (ITO)/Ag/tungsten oxide (W O3) for transparent organic light-emitting diodes. The device showed a weak negative differential resistance (NDR), until the operating voltage of 8 V was reached. NDR was due to the resonant tunneling by both the quantum barrier and quantum well. The silver oxide (Ag2 O) on the Ag metal was confirmed by x-ray photoelectron spectroscopy, and the energy levels of Ag2 O were quantized due to the quantum size effect and this produced the resonant tunneling channels. The device using ITOAgW O3 with a LiFAl bilayer was superior to those devices which only used ITO or W O3, mainly because the out coupling was enhanced by employing a W O3 material, which is much more transparent than ITO.

UR - https://www.scopus.com/pages/publications/38349116225

U2 - 10.1063/1.2835044

DO - 10.1063/1.2835044

M3 - Article

AN - SCOPUS:38349116225

SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 023306

ER -

Transparent organic light-emitting diodes consisting of a metal oxide multilayer cathode

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