Tetra-methyl substituted copper (II) phthalocyanine as a hole injection enhancer in organic light-emitting diodes

Yu-Long Wang; Jia-Ju Xu; Yi-Wei Lin; Qian Chen; Hai-Quan Shan; Yan Yan; V. A L Roy; Zong-Xiang Xu

doi:10.1063/1.4932633

Tetra-methyl substituted copper (II) phthalocyanine as a hole injection enhancer in organic light-emitting diodes

Yu-Long Wang, Jia-Ju Xu, Yi-Wei Lin, Qian Chen, Hai-Quan Shan, Yan Yan, V. A L Roy^*, Zong-Xiang Xu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

We have enhanced hole injection and lifetime in organic light-emitting diodes (OLEDs) by incorporating the isomeric metal phthalocyanine, CuMePc, as a hole injection enhancer. The OLED devices containing CuMePc as a hole injection layer (HIL) exhibited higher luminous efficiency and operational lifetime than those using a CuPc layer and without a HIL. The effect of CuMePc thickness on device performance was investigated. Atomic force microscope (AFM) studies revealed that the thin films were smooth and uniform because the mixture of CuMePc isomers depressed crystallization within the layer. This may have caused the observed enhanced hole injection, indicating that CuMePc is a promising HIL material for highly efficient OLEDs.

Original language	English
Article number	107205
Journal	AIP Advances
Volume	5
Issue number	10
Online published	5 Oct 2015
DOIs	https://doi.org/10.1063/1.4932633
Publication status	Published - Oct 2015

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title = "Tetra-methyl substituted copper (II) phthalocyanine as a hole injection enhancer in organic light-emitting diodes",

abstract = "We have enhanced hole injection and lifetime in organic light-emitting diodes (OLEDs) by incorporating the isomeric metal phthalocyanine, CuMePc, as a hole injection enhancer. The OLED devices containing CuMePc as a hole injection layer (HIL) exhibited higher luminous efficiency and operational lifetime than those using a CuPc layer and without a HIL. The effect of CuMePc thickness on device performance was investigated. Atomic force microscope (AFM) studies revealed that the thin films were smooth and uniform because the mixture of CuMePc isomers depressed crystallization within the layer. This may have caused the observed enhanced hole injection, indicating that CuMePc is a promising HIL material for highly efficient OLEDs.",

author = "Yu-Long Wang and Jia-Ju Xu and Yi-Wei Lin and Qian Chen and Hai-Quan Shan and Yan Yan and Roy, {V. A L} and Zong-Xiang Xu",

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T1 - Tetra-methyl substituted copper (II) phthalocyanine as a hole injection enhancer in organic light-emitting diodes

AU - Wang, Yu-Long

AU - Xu, Jia-Ju

AU - Lin, Yi-Wei

AU - Chen, Qian

AU - Shan, Hai-Quan

AU - Yan, Yan

AU - Roy, V. A L

AU - Xu, Zong-Xiang

PY - 2015/10

Y1 - 2015/10

N2 - We have enhanced hole injection and lifetime in organic light-emitting diodes (OLEDs) by incorporating the isomeric metal phthalocyanine, CuMePc, as a hole injection enhancer. The OLED devices containing CuMePc as a hole injection layer (HIL) exhibited higher luminous efficiency and operational lifetime than those using a CuPc layer and without a HIL. The effect of CuMePc thickness on device performance was investigated. Atomic force microscope (AFM) studies revealed that the thin films were smooth and uniform because the mixture of CuMePc isomers depressed crystallization within the layer. This may have caused the observed enhanced hole injection, indicating that CuMePc is a promising HIL material for highly efficient OLEDs.

AB - We have enhanced hole injection and lifetime in organic light-emitting diodes (OLEDs) by incorporating the isomeric metal phthalocyanine, CuMePc, as a hole injection enhancer. The OLED devices containing CuMePc as a hole injection layer (HIL) exhibited higher luminous efficiency and operational lifetime than those using a CuPc layer and without a HIL. The effect of CuMePc thickness on device performance was investigated. Atomic force microscope (AFM) studies revealed that the thin films were smooth and uniform because the mixture of CuMePc isomers depressed crystallization within the layer. This may have caused the observed enhanced hole injection, indicating that CuMePc is a promising HIL material for highly efficient OLEDs.

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U2 - 10.1063/1.4932633

DO - 10.1063/1.4932633

M3 - RGC 21 - Publication in refereed journal

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JO - AIP Advances

JF - AIP Advances

IS - 10

M1 - 107205

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Tetra-methyl substituted copper (II) phthalocyanine as a hole injection enhancer in organic light-emitting diodes

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