Characteristics of emissive bilayers in electrophosphorescent organic light-emitting diodes

Bum Jin Chang; Jong Hyeok Park; Kwang Hee Lee; Yong Chul Kim; Jae Woong Yu; Jai Kyeong Kim

doi:10.1016/j.cap.2005.04.015

Characteristics of emissive bilayers in electrophosphorescent organic light-emitting diodes

Bum Jin Chang, Jong Hyeok Park, Kwang Hee Lee, Yong Chul Kim, Jae Woong Yu, Jai Kyeong Kim

Department of Chemical and Biomolecular Engineering

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

1 Citation (Scopus)

Abstract

New electrophosphorescent organic light-emitting diodes were fabricated by polymer/Ir(ppy)₃ bilayers. Already several groups have reported polymer systems that show efficient energy transfer from a polymer host to an organometallic guest. We have fabricated a phosphorescent polymer light-emitting device with fac tris(2-phenylpyridine)iridium [Ir(ppy)₃] as a triplet emissive layer on a poly(vinylcarbazole) (PVK) layer. The emission spectrum of the bilayer device exhibited pure Ir(ppy)₃ emission, which indicates that the efficient energy transfer from PVK layer to Ir(ppy)₃ layer. Our bilayer device system shows a lower driving voltage and a higher current density than those of the general blended device.

Original language	English
Pages (from-to)	658-662
Number of pages	5
Journal	Current Applied Physics
Volume	6
Issue number	4
DOIs	https://doi.org/10.1016/j.cap.2005.04.015
Publication status	Published - 2006 Jul

Bibliographical note

Funding Information:
This research was supported by a grant (code #: 04K1501-01210) from ‘Center for Nanostructured Materials Technology’ under ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, Korea.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Physics and Astronomy(all)

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title = "Characteristics of emissive bilayers in electrophosphorescent organic light-emitting diodes",

abstract = "New electrophosphorescent organic light-emitting diodes were fabricated by polymer/Ir(ppy)3 bilayers. Already several groups have reported polymer systems that show efficient energy transfer from a polymer host to an organometallic guest. We have fabricated a phosphorescent polymer light-emitting device with fac tris(2-phenylpyridine)iridium [Ir(ppy)3] as a triplet emissive layer on a poly(vinylcarbazole) (PVK) layer. The emission spectrum of the bilayer device exhibited pure Ir(ppy)3 emission, which indicates that the efficient energy transfer from PVK layer to Ir(ppy)3 layer. Our bilayer device system shows a lower driving voltage and a higher current density than those of the general blended device.",

author = "Chang, {Bum Jin} and Park, {Jong Hyeok} and Lee, {Kwang Hee} and Kim, {Yong Chul} and Yu, {Jae Woong} and Kim, {Jai Kyeong}",

note = "Funding Information: This research was supported by a grant (code #: 04K1501-01210) from {\textquoteleft}Center for Nanostructured Materials Technology{\textquoteright} under {\textquoteleft}21st Century Frontier R&D Programs{\textquoteright} of the Ministry of Science and Technology, Korea.",

year = "2006",

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doi = "10.1016/j.cap.2005.04.015",

language = "English",

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pages = "658--662",

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AU - Chang, Bum Jin

AU - Park, Jong Hyeok

AU - Lee, Kwang Hee

AU - Kim, Yong Chul

AU - Yu, Jae Woong

AU - Kim, Jai Kyeong

N1 - Funding Information: This research was supported by a grant (code #: 04K1501-01210) from ‘Center for Nanostructured Materials Technology’ under ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, Korea.

PY - 2006/7

Y1 - 2006/7

N2 - New electrophosphorescent organic light-emitting diodes were fabricated by polymer/Ir(ppy)3 bilayers. Already several groups have reported polymer systems that show efficient energy transfer from a polymer host to an organometallic guest. We have fabricated a phosphorescent polymer light-emitting device with fac tris(2-phenylpyridine)iridium [Ir(ppy)3] as a triplet emissive layer on a poly(vinylcarbazole) (PVK) layer. The emission spectrum of the bilayer device exhibited pure Ir(ppy)3 emission, which indicates that the efficient energy transfer from PVK layer to Ir(ppy)3 layer. Our bilayer device system shows a lower driving voltage and a higher current density than those of the general blended device.

AB - New electrophosphorescent organic light-emitting diodes were fabricated by polymer/Ir(ppy)3 bilayers. Already several groups have reported polymer systems that show efficient energy transfer from a polymer host to an organometallic guest. We have fabricated a phosphorescent polymer light-emitting device with fac tris(2-phenylpyridine)iridium [Ir(ppy)3] as a triplet emissive layer on a poly(vinylcarbazole) (PVK) layer. The emission spectrum of the bilayer device exhibited pure Ir(ppy)3 emission, which indicates that the efficient energy transfer from PVK layer to Ir(ppy)3 layer. Our bilayer device system shows a lower driving voltage and a higher current density than those of the general blended device.

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JO - Current Applied Physics

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Characteristics of emissive bilayers in electrophosphorescent organic light-emitting diodes

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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