High-performance flexible organic light-emitting diodes using amorphous indium zinc oxide anode

Jae Wook Kang; Won Ik Jeong; Jang Joo Kim; Han Ki Kim; Do Geun Kim; Gun Hwan Lee

doi:10.1149/1.2720635

High-performance flexible organic light-emitting diodes using amorphous indium zinc oxide anode

Jae Wook Kang, Won Ik Jeong, Jang Joo Kim, Han Ki Kim, Do Geun Kim, Gun Hwan Lee

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

114 Scopus citations

Abstract

We demonstrate a high-performance flexible organic light-emitting diode (OLED) employing amorphous indium zinc oxide (IZO) anode. The amorphous IZO on flexible polycarbonate (PC) substrate shows similar electrical conductivity and optical transmittance with commercial (ITO) glass, even though it was prepared at <50°C. Moreover, it exhibits little resistance change during 5000 bending cycles, demonstrating good mechanical robustness. A green phosphorescent OLED fabricated on amorphous IZO on flexible PC shows maximum external quantum efficiency of η_ext =13.7% and power efficiency of η_p =32.7 lmW, which are higher than a device fabricated on a commercial ITO on glass (η_ext =12.4% and η_p =30.1 lmW) and ITO on flexible PC (η_ext =8.5% and η_p =14.1 lmW). The mechanical robustness and low-temperature deposition of IZO combined with high OLED performance clearly manifest that the amorphous IZO is a promising anode material for flexible displays.

Original language	English
Pages (from-to)	75-78
Number of pages	4
Journal	Electrochemical and Solid-State Letters
Volume	10
Issue number	6
DOIs	https://doi.org/10.1149/1.2720635
State	Published - 2007
Externally published	Yes

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title = "High-performance flexible organic light-emitting diodes using amorphous indium zinc oxide anode",

abstract = "We demonstrate a high-performance flexible organic light-emitting diode (OLED) employing amorphous indium zinc oxide (IZO) anode. The amorphous IZO on flexible polycarbonate (PC) substrate shows similar electrical conductivity and optical transmittance with commercial (ITO) glass, even though it was prepared at <50°C. Moreover, it exhibits little resistance change during 5000 bending cycles, demonstrating good mechanical robustness. A green phosphorescent OLED fabricated on amorphous IZO on flexible PC shows maximum external quantum efficiency of ηext =13.7\% and power efficiency of ηp =32.7 lmW, which are higher than a device fabricated on a commercial ITO on glass (ηext =12.4\% and ηp =30.1 lmW) and ITO on flexible PC (ηext =8.5\% and ηp =14.1 lmW). The mechanical robustness and low-temperature deposition of IZO combined with high OLED performance clearly manifest that the amorphous IZO is a promising anode material for flexible displays.",

author = "Kang, \{Jae Wook\} and Jeong, \{Won Ik\} and Kim, \{Jang Joo\} and Kim, \{Han Ki\} and Kim, \{Do Geun\} and Lee, \{Gun Hwan\}",

year = "2007",

doi = "10.1149/1.2720635",

language = "English",

volume = "10",

pages = "75--78",

journal = "Electrochemical and Solid-State Letters",

issn = "1099-0062",

publisher = "Electrochemical Society Inc.",

number = "6",

}

TY - JOUR

T1 - High-performance flexible organic light-emitting diodes using amorphous indium zinc oxide anode

AU - Kang, Jae Wook

AU - Jeong, Won Ik

AU - Kim, Jang Joo

AU - Kim, Han Ki

AU - Kim, Do Geun

AU - Lee, Gun Hwan

PY - 2007

Y1 - 2007

N2 - We demonstrate a high-performance flexible organic light-emitting diode (OLED) employing amorphous indium zinc oxide (IZO) anode. The amorphous IZO on flexible polycarbonate (PC) substrate shows similar electrical conductivity and optical transmittance with commercial (ITO) glass, even though it was prepared at <50°C. Moreover, it exhibits little resistance change during 5000 bending cycles, demonstrating good mechanical robustness. A green phosphorescent OLED fabricated on amorphous IZO on flexible PC shows maximum external quantum efficiency of ηext =13.7% and power efficiency of ηp =32.7 lmW, which are higher than a device fabricated on a commercial ITO on glass (ηext =12.4% and ηp =30.1 lmW) and ITO on flexible PC (ηext =8.5% and ηp =14.1 lmW). The mechanical robustness and low-temperature deposition of IZO combined with high OLED performance clearly manifest that the amorphous IZO is a promising anode material for flexible displays.

AB - We demonstrate a high-performance flexible organic light-emitting diode (OLED) employing amorphous indium zinc oxide (IZO) anode. The amorphous IZO on flexible polycarbonate (PC) substrate shows similar electrical conductivity and optical transmittance with commercial (ITO) glass, even though it was prepared at <50°C. Moreover, it exhibits little resistance change during 5000 bending cycles, demonstrating good mechanical robustness. A green phosphorescent OLED fabricated on amorphous IZO on flexible PC shows maximum external quantum efficiency of ηext =13.7% and power efficiency of ηp =32.7 lmW, which are higher than a device fabricated on a commercial ITO on glass (ηext =12.4% and ηp =30.1 lmW) and ITO on flexible PC (ηext =8.5% and ηp =14.1 lmW). The mechanical robustness and low-temperature deposition of IZO combined with high OLED performance clearly manifest that the amorphous IZO is a promising anode material for flexible displays.

UR - https://www.scopus.com/pages/publications/34047255395

U2 - 10.1149/1.2720635

DO - 10.1149/1.2720635

M3 - Article

AN - SCOPUS:34047255395

SN - 1099-0062

VL - 10

SP - 75

EP - 78

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 6

ER -

High-performance flexible organic light-emitting diodes using amorphous indium zinc oxide anode

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