Organic light-emitting diodes with structured cathode

Deang Liu; Michael Fina; Zhaoyang Chen; Xiaobo Chen; Gao Liu; Steven Johnson; Samuel S. Mao

doi:10.1063/1.2776018

Organic light-emitting diodes with structured cathode

Deang Liu
, Michael Fina
, Zhaoyang Chen
, Xiaobo Chen
, Gao Liu
, Steven Johnson
, Samuel S. Mao

Mechanical & Nuclear Engineering

Lawrence Berkeley National Laboratory

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

21 Scopus citations

Abstract

Organic light-emitting diode (OLED) devices were fabricated with a structured polymer-cathode interface. The devices have a layered structure indium tin oxide/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)/poly(2-methoxy-5- [(2′ -ethylhexyl)oxy]- p -phenylenevinylene)/ Al. The light-emitting polymer layers were patterned via a stamp imprinting process, followed by vapor deposition of the cathode. Devices employing the structured cathode showed improved electron injection and increased brightness when compared to conventional flat cathode devices. Electrostatic modeling of the structured cathode geometry revealed localized increase in electric field leading to enhanced electron tunneling through the polymer-cathode interface. Thus, improved OLED performance was demonstrated from cathode microstructuring.

Original language	British English
Article number	093514
Journal	Applied Physics Letters
Volume	91
Issue number	9
DOIs	https://doi.org/10.1063/1.2776018
State	Published - 2007

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title = "Organic light-emitting diodes with structured cathode",

abstract = "Organic light-emitting diode (OLED) devices were fabricated with a structured polymer-cathode interface. The devices have a layered structure indium tin oxide/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)/poly(2-methoxy-5- [(2′ -ethylhexyl)oxy]- p -phenylenevinylene)/ Al. The light-emitting polymer layers were patterned via a stamp imprinting process, followed by vapor deposition of the cathode. Devices employing the structured cathode showed improved electron injection and increased brightness when compared to conventional flat cathode devices. Electrostatic modeling of the structured cathode geometry revealed localized increase in electric field leading to enhanced electron tunneling through the polymer-cathode interface. Thus, improved OLED performance was demonstrated from cathode microstructuring.",

author = "Deang Liu and Michael Fina and Zhaoyang Chen and Xiaobo Chen and Gao Liu and Steven Johnson and Mao, \{Samuel S.\}",

note = "Funding Information: This research has been supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, under Contract No. DE-AC02-05CH11231.",

year = "2007",

doi = "10.1063/1.2776018",

language = "British English",

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journal = "Applied Physics Letters",

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AU - Liu, Deang

AU - Fina, Michael

AU - Chen, Zhaoyang

AU - Chen, Xiaobo

AU - Liu, Gao

AU - Johnson, Steven

AU - Mao, Samuel S.

N1 - Funding Information: This research has been supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, under Contract No. DE-AC02-05CH11231.

PY - 2007

Y1 - 2007

N2 - Organic light-emitting diode (OLED) devices were fabricated with a structured polymer-cathode interface. The devices have a layered structure indium tin oxide/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)/poly(2-methoxy-5- [(2′ -ethylhexyl)oxy]- p -phenylenevinylene)/ Al. The light-emitting polymer layers were patterned via a stamp imprinting process, followed by vapor deposition of the cathode. Devices employing the structured cathode showed improved electron injection and increased brightness when compared to conventional flat cathode devices. Electrostatic modeling of the structured cathode geometry revealed localized increase in electric field leading to enhanced electron tunneling through the polymer-cathode interface. Thus, improved OLED performance was demonstrated from cathode microstructuring.

AB - Organic light-emitting diode (OLED) devices were fabricated with a structured polymer-cathode interface. The devices have a layered structure indium tin oxide/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)/poly(2-methoxy-5- [(2′ -ethylhexyl)oxy]- p -phenylenevinylene)/ Al. The light-emitting polymer layers were patterned via a stamp imprinting process, followed by vapor deposition of the cathode. Devices employing the structured cathode showed improved electron injection and increased brightness when compared to conventional flat cathode devices. Electrostatic modeling of the structured cathode geometry revealed localized increase in electric field leading to enhanced electron tunneling through the polymer-cathode interface. Thus, improved OLED performance was demonstrated from cathode microstructuring.

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JF - Applied Physics Letters

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ER -

Organic light-emitting diodes with structured cathode

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