Characteristics in bilayer organic light-emitting diodes with variation of the film thickness

Kwang Jik Lee; Jae Woong Yu; Jai Kyeong Kim; Young Chul Kim; Jong Hyeok Park; O. Ok Park

doi:10.1080/15421400490506081

Characteristics in bilayer organic light-emitting diodes with variation of the film thickness

Kwang Jik Lee, Jae Woong Yu, Jai Kyeong Kim, Young Chul Kim, Jong Hyeok Park, O. Ok Park

Department of Chemical and Biomolecular Engineering

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

Abstract

We fabricated bilayer polymer light-emitting diodes (PLED) with Poly(9,9′-diyhexylfluorene-2, 7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) (PDHFMPPV) and poly(N-vinylcarbazole) (PVK) as an emmitting layer and a hole transport layer, respectively. The thickness of each layer was varied, while the total thickness was controlled to be constant as 110nm. We observed electroluminescence, photoluminescence and current-voltage-luminescence characteristics of these bilayer devices and a single layer device with PDHFMPPV polymer as a light emitting layer for comparison. The quantum efficiencies of the bilayer devices were enhanced up to two about orders magnitude compared with the single-layer device.

Original language	English
Pages (from-to)	147-152
Number of pages	6
Journal	Molecular Crystals and Liquid Crystals
Volume	424
DOIs	https://doi.org/10.1080/15421400490506081
Publication status	Published - 2004

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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title = "Characteristics in bilayer organic light-emitting diodes with variation of the film thickness",

abstract = "We fabricated bilayer polymer light-emitting diodes (PLED) with Poly(9,9′-diyhexylfluorene-2, 7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) (PDHFMPPV) and poly(N-vinylcarbazole) (PVK) as an emmitting layer and a hole transport layer, respectively. The thickness of each layer was varied, while the total thickness was controlled to be constant as 110nm. We observed electroluminescence, photoluminescence and current-voltage-luminescence characteristics of these bilayer devices and a single layer device with PDHFMPPV polymer as a light emitting layer for comparison. The quantum efficiencies of the bilayer devices were enhanced up to two about orders magnitude compared with the single-layer device.",

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AU - Lee, Kwang Jik

AU - Yu, Jae Woong

AU - Kim, Jai Kyeong

AU - Kim, Young Chul

AU - Park, Jong Hyeok

AU - Park, O. Ok

PY - 2004

Y1 - 2004

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AB - We fabricated bilayer polymer light-emitting diodes (PLED) with Poly(9,9′-diyhexylfluorene-2, 7-divinylene-m-phenylenevinylene-stat-p-phenylenevinylene) (PDHFMPPV) and poly(N-vinylcarbazole) (PVK) as an emmitting layer and a hole transport layer, respectively. The thickness of each layer was varied, while the total thickness was controlled to be constant as 110nm. We observed electroluminescence, photoluminescence and current-voltage-luminescence characteristics of these bilayer devices and a single layer device with PDHFMPPV polymer as a light emitting layer for comparison. The quantum efficiencies of the bilayer devices were enhanced up to two about orders magnitude compared with the single-layer device.

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Characteristics in bilayer organic light-emitting diodes with variation of the film thickness

Abstract

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