Enhancement of hole injection using ozone treated Ag nanodots dispersed on indium tin oxide anode for organic light emitting diodes

Jong Min Moon; Jung Hyeok Bae; Jin A. Jeong; Soon Wook Jeong; No Jin Park; Han Ki Kim; Jae Wook Kang; Jang Joo Kim; Min Su Yi

doi:10.1063/1.2719153

Enhancement of hole injection using ozone treated Ag nanodots dispersed on indium tin oxide anode for organic light emitting diodes

Jong Min Moon
, Jung Hyeok Bae
, Jin A. Jeong
, Soon Wook Jeong
, No Jin Park
, Han Ki Kim^*
, Jae Wook Kang
, Jang Joo Kim
, Min Su Yi

^*Corresponding author for this work

Department of Flexible and Printable Electronics

Kumoh National Institute of Technology
Seoul National University
Kyungpook National University

Research output: Contribution to journal › Journal article › peer-review

44 Scopus citations

Abstract

The authors report the enhancement of hole injection using an indium tin oxide (ITO) anode covered with ultraviolet (UV) ozone-treated Ag nanodots for fac tris (2-phenylpyridine) iridium Ir(ppy)₃-doped phosphorescent organic light-emitting diodes (OLEDs). X-ray photoelectron spectroscopy and UV-visible spectrometer analysis exhibit that UV-ozone treatment of the Ag nanodots dispersed on the ITO anode leads to formation of Ag₂O nanodots with high work function and high transparency. Phosphorescent OLEDs fabricated on the Ag₂O nanodot-dispersed ITO anode showed a lower turn-on voltage and higher luminescence than those of OLEDs prepared with a commercial ITO anode. It was thought that, as Ag nanodots changed to Ag ₂O nanodots by UV-ozone treatment, the decrease of the energy barrier height led to the enhancement of hole injection in the phosphorescent OLEDs.

Original language	English
Article number	163516
Journal	Applied Physics Letters
Volume	90
Issue number	16
DOIs	https://doi.org/10.1063/1.2719153
State	Published - 2007

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10.1063/1.2719153

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@article{0b9ffe9378184df6a8e896bc589e9ff6,

title = "Enhancement of hole injection using ozone treated Ag nanodots dispersed on indium tin oxide anode for organic light emitting diodes",

abstract = "The authors report the enhancement of hole injection using an indium tin oxide (ITO) anode covered with ultraviolet (UV) ozone-treated Ag nanodots for fac tris (2-phenylpyridine) iridium Ir(ppy)3-doped phosphorescent organic light-emitting diodes (OLEDs). X-ray photoelectron spectroscopy and UV-visible spectrometer analysis exhibit that UV-ozone treatment of the Ag nanodots dispersed on the ITO anode leads to formation of Ag2O nanodots with high work function and high transparency. Phosphorescent OLEDs fabricated on the Ag2O nanodot-dispersed ITO anode showed a lower turn-on voltage and higher luminescence than those of OLEDs prepared with a commercial ITO anode. It was thought that, as Ag nanodots changed to Ag 2O nanodots by UV-ozone treatment, the decrease of the energy barrier height led to the enhancement of hole injection in the phosphorescent OLEDs.",

author = "Moon, \{Jong Min\} and Bae, \{Jung Hyeok\} and Jeong, \{Jin A.\} and Jeong, \{Soon Wook\} and Park, \{No Jin\} and Kim, \{Han Ki\} and Kang, \{Jae Wook\} and Kim, \{Jang Joo\} and Yi, \{Min Su\}",

year = "2007",

doi = "10.1063/1.2719153",

language = "English",

volume = "90",

journal = "Applied Physics Letters",

issn = "0003-6951",

number = "16",

}

TY - JOUR

T1 - Enhancement of hole injection using ozone treated Ag nanodots dispersed on indium tin oxide anode for organic light emitting diodes

AU - Moon, Jong Min

AU - Bae, Jung Hyeok

AU - Jeong, Jin A.

AU - Jeong, Soon Wook

AU - Park, No Jin

AU - Kim, Han Ki

AU - Kang, Jae Wook

AU - Kim, Jang Joo

AU - Yi, Min Su

PY - 2007

Y1 - 2007

N2 - The authors report the enhancement of hole injection using an indium tin oxide (ITO) anode covered with ultraviolet (UV) ozone-treated Ag nanodots for fac tris (2-phenylpyridine) iridium Ir(ppy)3-doped phosphorescent organic light-emitting diodes (OLEDs). X-ray photoelectron spectroscopy and UV-visible spectrometer analysis exhibit that UV-ozone treatment of the Ag nanodots dispersed on the ITO anode leads to formation of Ag2O nanodots with high work function and high transparency. Phosphorescent OLEDs fabricated on the Ag2O nanodot-dispersed ITO anode showed a lower turn-on voltage and higher luminescence than those of OLEDs prepared with a commercial ITO anode. It was thought that, as Ag nanodots changed to Ag 2O nanodots by UV-ozone treatment, the decrease of the energy barrier height led to the enhancement of hole injection in the phosphorescent OLEDs.

AB - The authors report the enhancement of hole injection using an indium tin oxide (ITO) anode covered with ultraviolet (UV) ozone-treated Ag nanodots for fac tris (2-phenylpyridine) iridium Ir(ppy)3-doped phosphorescent organic light-emitting diodes (OLEDs). X-ray photoelectron spectroscopy and UV-visible spectrometer analysis exhibit that UV-ozone treatment of the Ag nanodots dispersed on the ITO anode leads to formation of Ag2O nanodots with high work function and high transparency. Phosphorescent OLEDs fabricated on the Ag2O nanodot-dispersed ITO anode showed a lower turn-on voltage and higher luminescence than those of OLEDs prepared with a commercial ITO anode. It was thought that, as Ag nanodots changed to Ag 2O nanodots by UV-ozone treatment, the decrease of the energy barrier height led to the enhancement of hole injection in the phosphorescent OLEDs.

UR - https://www.scopus.com/pages/publications/34247335469

U2 - 10.1063/1.2719153

DO - 10.1063/1.2719153

M3 - Journal article

AN - SCOPUS:34247335469

SN - 0003-6951

VL - 90

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

M1 - 163516

ER -

Enhancement of hole injection using ozone treated Ag nanodots dispersed on indium tin oxide anode for organic light emitting diodes

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