High efficiency rubrene based inverted top-emission organic light emitting devices with a mixed single layer

Zhaokui Wang; Yanhui Lou; Shigeki Naka; Hiroyuki Okada

doi:10.1016/j.jlumin.2010.02.021

High efficiency rubrene based inverted top-emission organic light emitting devices with a mixed single layer

Zhaokui Wang^*, Yanhui Lou, Shigeki Naka, Hiroyuki Okada

^*Corresponding author for this work

Electric and Electronic Engineering

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

20 Scopus citations

Abstract

Inverted top-emission organic light emitting devices (TEOLEDs) with a mixed single layer by mixing of electron transport materials (PyPySPyPy and Alq₃), hole transport material (α-NPD) and dope material (rubrene) were investigated. Maximum power efficiency of 3.5 lm/W and maximum luminance of 7000 cd/m² were obtained by optimizing the mixing ratio of PyPySPyPy:Alq₃:α-NPD:rubrene=25:50:25:1. Luminance and power efficiency of mixed single layer device were two times improved compared to bi-layer heterojunction device and tri-layer heterojunction device. Lifetime test also shows that the mixed single layer device exhibits longer operational lifetimes of 343 h, which is three times longer than the 109 h for tri-layer device, and two times longer than the 158 h for bi-layer device. In addition, the maximum luminance and power efficiency were obtained at 20,000 cd/m² and 7.5 lm/W, respectively, when a TPD layer of 45 nm was capped onto the top metal electrode.

Original language	English
Pages (from-to)	1198-1202
Number of pages	5
Journal	Journal of Luminescence
Volume	130
Issue number	7
DOIs	https://doi.org/10.1016/j.jlumin.2010.02.021
State	Published - 2010/07

Keywords

Capping layer
Lifetime
Mixed single layer
Top-emission organic light emitting device (OLED)

ASJC Scopus subject areas

Biophysics
Biochemistry
General Chemistry
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.jlumin.2010.02.021

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title = "High efficiency rubrene based inverted top-emission organic light emitting devices with a mixed single layer",

abstract = "Inverted top-emission organic light emitting devices (TEOLEDs) with a mixed single layer by mixing of electron transport materials (PyPySPyPy and Alq3), hole transport material (α-NPD) and dope material (rubrene) were investigated. Maximum power efficiency of 3.5 lm/W and maximum luminance of 7000 cd/m2 were obtained by optimizing the mixing ratio of PyPySPyPy:Alq3:α-NPD:rubrene=25:50:25:1. Luminance and power efficiency of mixed single layer device were two times improved compared to bi-layer heterojunction device and tri-layer heterojunction device. Lifetime test also shows that the mixed single layer device exhibits longer operational lifetimes of 343 h, which is three times longer than the 109 h for tri-layer device, and two times longer than the 158 h for bi-layer device. In addition, the maximum luminance and power efficiency were obtained at 20,000 cd/m2 and 7.5 lm/W, respectively, when a TPD layer of 45 nm was capped onto the top metal electrode.",

keywords = "Capping layer, Lifetime, Mixed single layer, Top-emission organic light emitting device (OLED)",

author = "Zhaokui Wang and Yanhui Lou and Shigeki Naka and Hiroyuki Okada",

note = "Funding Information: This work was supported by regional innovation of R&D projects, overseen by the Ministry of Economy, Trade and Industry (METI), Japan. We also thank Kobelco Research Institute for providing AlNd and Chisso Corporation for supplying PyPySPyPy.",

year = "2010",

month = jul,

doi = "10.1016/j.jlumin.2010.02.021",

language = "英語",

volume = "130",

pages = "1198--1202",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

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T1 - High efficiency rubrene based inverted top-emission organic light emitting devices with a mixed single layer

AU - Wang, Zhaokui

AU - Lou, Yanhui

AU - Naka, Shigeki

AU - Okada, Hiroyuki

N1 - Funding Information: This work was supported by regional innovation of R&D projects, overseen by the Ministry of Economy, Trade and Industry (METI), Japan. We also thank Kobelco Research Institute for providing AlNd and Chisso Corporation for supplying PyPySPyPy.

PY - 2010/7

Y1 - 2010/7

N2 - Inverted top-emission organic light emitting devices (TEOLEDs) with a mixed single layer by mixing of electron transport materials (PyPySPyPy and Alq3), hole transport material (α-NPD) and dope material (rubrene) were investigated. Maximum power efficiency of 3.5 lm/W and maximum luminance of 7000 cd/m2 were obtained by optimizing the mixing ratio of PyPySPyPy:Alq3:α-NPD:rubrene=25:50:25:1. Luminance and power efficiency of mixed single layer device were two times improved compared to bi-layer heterojunction device and tri-layer heterojunction device. Lifetime test also shows that the mixed single layer device exhibits longer operational lifetimes of 343 h, which is three times longer than the 109 h for tri-layer device, and two times longer than the 158 h for bi-layer device. In addition, the maximum luminance and power efficiency were obtained at 20,000 cd/m2 and 7.5 lm/W, respectively, when a TPD layer of 45 nm was capped onto the top metal electrode.

AB - Inverted top-emission organic light emitting devices (TEOLEDs) with a mixed single layer by mixing of electron transport materials (PyPySPyPy and Alq3), hole transport material (α-NPD) and dope material (rubrene) were investigated. Maximum power efficiency of 3.5 lm/W and maximum luminance of 7000 cd/m2 were obtained by optimizing the mixing ratio of PyPySPyPy:Alq3:α-NPD:rubrene=25:50:25:1. Luminance and power efficiency of mixed single layer device were two times improved compared to bi-layer heterojunction device and tri-layer heterojunction device. Lifetime test also shows that the mixed single layer device exhibits longer operational lifetimes of 343 h, which is three times longer than the 109 h for tri-layer device, and two times longer than the 158 h for bi-layer device. In addition, the maximum luminance and power efficiency were obtained at 20,000 cd/m2 and 7.5 lm/W, respectively, when a TPD layer of 45 nm was capped onto the top metal electrode.

KW - Capping layer

KW - Lifetime

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KW - Top-emission organic light emitting device (OLED)

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JO - Journal of Luminescence

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High efficiency rubrene based inverted top-emission organic light emitting devices with a mixed single layer

Abstract

Keywords

ASJC Scopus subject areas

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