Mixed host organic light-emitting devices with low driving voltage and long lifetime

Jiun Haw Lee; Chih I. Wu; Shun Wei Liu; Ching An Huang; Yih Chang

doi:10.1063/1.1879093

Mixed host organic light-emitting devices with low driving voltage and long lifetime

Jiun Haw Lee^*
, Chih I. Wu
, Shun Wei Liu
, Ching An Huang
, Yih Chang

^*Corresponding author for this work

Department of Mechanical Engineering

National Taiwan University
Academia Sinica - Institute of Chemistry
RiTdisplay Corp.

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

117 Scopus citations

Abstract

In this letter, we present and analyze the device performance of the mixed host (MH) organic light-emitting devices (OLEDs). The host of the emitting layer (EML) material in this device consists of a hole transport layer (HTL) and an electron transport layer (ETL) fabricated by coevaporation. The bipolar transport characteristic of the MH layer helps to reduce the driving voltage. Device lifetime is increased due to the elimination of the sharp boundary of the HTL/EML interface. Combining the MH structure with a high mobility electron ETL material, bis(10-hydroxybenzo [h] qinolinato)beryllium, the OLED has shown a brightness of 27 600 cd m2 at a driving voltage of 5 V, and a lifetime four times longer than that of a conventional OLED.

Original language	English
Article number	103506
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	10
DOIs	https://doi.org/10.1063/1.1879093
State	Published - 07 03 2005

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title = "Mixed host organic light-emitting devices with low driving voltage and long lifetime",

abstract = "In this letter, we present and analyze the device performance of the mixed host (MH) organic light-emitting devices (OLEDs). The host of the emitting layer (EML) material in this device consists of a hole transport layer (HTL) and an electron transport layer (ETL) fabricated by coevaporation. The bipolar transport characteristic of the MH layer helps to reduce the driving voltage. Device lifetime is increased due to the elimination of the sharp boundary of the HTL/EML interface. Combining the MH structure with a high mobility electron ETL material, bis(10-hydroxybenzo [h] qinolinato)beryllium, the OLED has shown a brightness of 27 600 cd m2 at a driving voltage of 5 V, and a lifetime four times longer than that of a conventional OLED.",

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T1 - Mixed host organic light-emitting devices with low driving voltage and long lifetime

AU - Lee, Jiun Haw

AU - Wu, Chih I.

AU - Liu, Shun Wei

AU - Huang, Ching An

AU - Chang, Yih

PY - 2005/3/7

Y1 - 2005/3/7

N2 - In this letter, we present and analyze the device performance of the mixed host (MH) organic light-emitting devices (OLEDs). The host of the emitting layer (EML) material in this device consists of a hole transport layer (HTL) and an electron transport layer (ETL) fabricated by coevaporation. The bipolar transport characteristic of the MH layer helps to reduce the driving voltage. Device lifetime is increased due to the elimination of the sharp boundary of the HTL/EML interface. Combining the MH structure with a high mobility electron ETL material, bis(10-hydroxybenzo [h] qinolinato)beryllium, the OLED has shown a brightness of 27 600 cd m2 at a driving voltage of 5 V, and a lifetime four times longer than that of a conventional OLED.

AB - In this letter, we present and analyze the device performance of the mixed host (MH) organic light-emitting devices (OLEDs). The host of the emitting layer (EML) material in this device consists of a hole transport layer (HTL) and an electron transport layer (ETL) fabricated by coevaporation. The bipolar transport characteristic of the MH layer helps to reduce the driving voltage. Device lifetime is increased due to the elimination of the sharp boundary of the HTL/EML interface. Combining the MH structure with a high mobility electron ETL material, bis(10-hydroxybenzo [h] qinolinato)beryllium, the OLED has shown a brightness of 27 600 cd m2 at a driving voltage of 5 V, and a lifetime four times longer than that of a conventional OLED.

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SP - 1

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 10

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ER -

Mixed host organic light-emitting devices with low driving voltage and long lifetime

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