High-efficiency polymer light-emitting diode via Al interfacial modification using polyurethane

Sung Nien Hsieh; Tzu Yin Kuo; Ten Chin Wen; Tzung Fang Guo; Yuh Lang Lee

doi:10.1143/JJAP.45.L773

High-efficiency polymer light-emitting diode via Al interfacial modification using polyurethane

Sung Nien Hsieh, Tzu Yin Kuo, Ten Chin Wen, Tzung Fang Guo, Yuh Lang Lee

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

3 Citations (Scopus)

Abstract

An efficient polymer light-emitting diode (PLED) was fabricated by inserting polyurethane (PU) between a poly(2-methoxy-5-(2′-ethylhexyloxy)- 1,4-phenylene vinylene) layer and an Al cathode. The electroluminescence (EL) efficiency of the PU-based device can reach 1.27 cd/A, which is much higher than that of a device without PU (0.015 cd/A). The enhanced performance is attributed to both the hole-blocking capacity of the PU layer and the specific interaction between PU and the deposited Al, significantly facilitating the injection of electrons. Furthermore, the electron injection ability of PU-based devices was found to strongly depend on the thicknesses of the PU and Al layers.

Original language	English
Pages (from-to)	L773-L776
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	45
Issue number	29-32
DOIs	https://doi.org/10.1143/JJAP.45.L773
Publication status	Published - 2006 Aug 11

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

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10.1143/JJAP.45.L773

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title = "High-efficiency polymer light-emitting diode via Al interfacial modification using polyurethane",

abstract = "An efficient polymer light-emitting diode (PLED) was fabricated by inserting polyurethane (PU) between a poly(2-methoxy-5-(2′-ethylhexyloxy)- 1,4-phenylene vinylene) layer and an Al cathode. The electroluminescence (EL) efficiency of the PU-based device can reach 1.27 cd/A, which is much higher than that of a device without PU (0.015 cd/A). The enhanced performance is attributed to both the hole-blocking capacity of the PU layer and the specific interaction between PU and the deposited Al, significantly facilitating the injection of electrons. Furthermore, the electron injection ability of PU-based devices was found to strongly depend on the thicknesses of the PU and Al layers.",

author = "Hsieh, {Sung Nien} and Kuo, {Tzu Yin} and Wen, {Ten Chin} and Guo, {Tzung Fang} and Lee, {Yuh Lang}",

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T1 - High-efficiency polymer light-emitting diode via Al interfacial modification using polyurethane

AU - Hsieh, Sung Nien

AU - Kuo, Tzu Yin

AU - Wen, Ten Chin

AU - Guo, Tzung Fang

AU - Lee, Yuh Lang

PY - 2006/8/11

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AB - An efficient polymer light-emitting diode (PLED) was fabricated by inserting polyurethane (PU) between a poly(2-methoxy-5-(2′-ethylhexyloxy)- 1,4-phenylene vinylene) layer and an Al cathode. The electroluminescence (EL) efficiency of the PU-based device can reach 1.27 cd/A, which is much higher than that of a device without PU (0.015 cd/A). The enhanced performance is attributed to both the hole-blocking capacity of the PU layer and the specific interaction between PU and the deposited Al, significantly facilitating the injection of electrons. Furthermore, the electron injection ability of PU-based devices was found to strongly depend on the thicknesses of the PU and Al layers.

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