High-brightness top-emissive polymer light-emitting diodes utilizing organic oxide/Al/Ag composite cathode

Tzung Fang Guo; Fuh Shun Yang; Zen Jay Tsai; Guan Weng Feng; Ten Chin Wen; Sung Nien Hsieh; Chia Tin Chung; Ching In Wu

doi:10.1063/1.2234317

High-brightness top-emissive polymer light-emitting diodes utilizing organic oxide/Al/Ag composite cathode

Tzung Fang Guo, Fuh Shun Yang, Zen Jay Tsai, Guan Weng Feng, Ten Chin Wen, Sung Nien Hsieh, Chia Tin Chung, Ching In Wu

研究成果: Article › 同行評審

13 引文斯高帕斯（Scopus）

摘要

This work presents the fabrication of high-brightness (over 30 000 cd/m²) top-emissive polymer light-emitting diodes (PLEDs) using a hybrid semitransparent cathode capable of efficient injection of electrons. The composite cathode is comprised of the organic oxide/Al complex as the injection buffer layer covered by a thin Ag overlayer. The anode is made of Ag: Ag ₂O coated on the glass substrate. The electroluminescence (EL) efficiency of 8.9 cd/A for phenyl-substituted poly(para-phenylene vinylene) copolymer based top-emissive PLED markedly exceeds that of 4.3 cd/A for the control device with the bottom-emissive configuration. The high performance is attributed to the balanced injection of charge carriers and the effective extraction of EL emission from the top cathode. The optical microcavity effect significantly promotes the EL emission in the direction along the surface normal.

原文	English
文章編號	051103
期刊	Applied Physics Letters
卷	89
發行號	5
DOIs	https://doi.org/10.1063/1.2234317
出版狀態	Published - 2006

All Science Journal Classification (ASJC) codes

物理與天文學（雜項）

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title = "High-brightness top-emissive polymer light-emitting diodes utilizing organic oxide/Al/Ag composite cathode",

abstract = "This work presents the fabrication of high-brightness (over 30 000 cd/m2) top-emissive polymer light-emitting diodes (PLEDs) using a hybrid semitransparent cathode capable of efficient injection of electrons. The composite cathode is comprised of the organic oxide/Al complex as the injection buffer layer covered by a thin Ag overlayer. The anode is made of Ag: Ag 2O coated on the glass substrate. The electroluminescence (EL) efficiency of 8.9 cd/A for phenyl-substituted poly(para-phenylene vinylene) copolymer based top-emissive PLED markedly exceeds that of 4.3 cd/A for the control device with the bottom-emissive configuration. The high performance is attributed to the balanced injection of charge carriers and the effective extraction of EL emission from the top cathode. The optical microcavity effect significantly promotes the EL emission in the direction along the surface normal.",

author = "Guo, {Tzung Fang} and Yang, {Fuh Shun} and Tsai, {Zen Jay} and Feng, {Guan Weng} and Wen, {Ten Chin} and Hsieh, {Sung Nien} and Chung, {Chia Tin} and Wu, {Ching In}",

note = "Funding Information: The authors would like to thank the National Science Council (NSC) of Taiwan (NSC94-2113-M-006-007 and NSC95-ET-7-006-001-ET) and the Asian Office of Aerospace Research and Development (AOARD-06-4076) for financially supporting this research. Dr. Ruei-Tang Chen from Eternal Chemical Co., Ltd. is appreciated for providing the HY-PPV polymer.",

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AU - Guo, Tzung Fang

AU - Yang, Fuh Shun

AU - Tsai, Zen Jay

AU - Feng, Guan Weng

AU - Wen, Ten Chin

AU - Hsieh, Sung Nien

AU - Chung, Chia Tin

AU - Wu, Ching In

N1 - Funding Information: The authors would like to thank the National Science Council (NSC) of Taiwan (NSC94-2113-M-006-007 and NSC95-ET-7-006-001-ET) and the Asian Office of Aerospace Research and Development (AOARD-06-4076) for financially supporting this research. Dr. Ruei-Tang Chen from Eternal Chemical Co., Ltd. is appreciated for providing the HY-PPV polymer.

PY - 2006

Y1 - 2006

N2 - This work presents the fabrication of high-brightness (over 30 000 cd/m2) top-emissive polymer light-emitting diodes (PLEDs) using a hybrid semitransparent cathode capable of efficient injection of electrons. The composite cathode is comprised of the organic oxide/Al complex as the injection buffer layer covered by a thin Ag overlayer. The anode is made of Ag: Ag 2O coated on the glass substrate. The electroluminescence (EL) efficiency of 8.9 cd/A for phenyl-substituted poly(para-phenylene vinylene) copolymer based top-emissive PLED markedly exceeds that of 4.3 cd/A for the control device with the bottom-emissive configuration. The high performance is attributed to the balanced injection of charge carriers and the effective extraction of EL emission from the top cathode. The optical microcavity effect significantly promotes the EL emission in the direction along the surface normal.

AB - This work presents the fabrication of high-brightness (over 30 000 cd/m2) top-emissive polymer light-emitting diodes (PLEDs) using a hybrid semitransparent cathode capable of efficient injection of electrons. The composite cathode is comprised of the organic oxide/Al complex as the injection buffer layer covered by a thin Ag overlayer. The anode is made of Ag: Ag 2O coated on the glass substrate. The electroluminescence (EL) efficiency of 8.9 cd/A for phenyl-substituted poly(para-phenylene vinylene) copolymer based top-emissive PLED markedly exceeds that of 4.3 cd/A for the control device with the bottom-emissive configuration. The high performance is attributed to the balanced injection of charge carriers and the effective extraction of EL emission from the top cathode. The optical microcavity effect significantly promotes the EL emission in the direction along the surface normal.

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High-brightness top-emissive polymer light-emitting diodes utilizing organic oxide/Al/Ag composite cathode

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