Improvement of light out-coupling efficiency in organic light-emitting diodes with variable nanopatterns

Jeong Ho Kim; Joong Yeon Cho; Jaehoon Park; Bong Kuk Lee; Kyu Ha Baek; Heon Lee; Lee Mi Do

doi:10.1007/s13391-013-3059-5

Improvement of light out-coupling efficiency in organic light-emitting diodes with variable nanopatterns

Jeong Ho Kim, Joong Yeon Cho, Jaehoon Park, Bong Kuk Lee, Kyu Ha Baek, Heon Lee, Lee Mi Do

Department of Materials Science and Engineering

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

21 Citations (Scopus)

Abstract

We present a viable method to enhance the current efficiency of organic light-emitting diodes (OLEDs) by imprinting cylindrical nanopatterns (NPs) onto a glass substrate. Herein, OLEDs equipped with an optimum NP array having a diameter of 300 nm and a periodic distance of 500 nm show a 33.4% improvement in current efficiency compared with a device without NPs. The light extraction efficiency of OLEDs was enhanced using a nanopatterned glass substrate, without any electrical degradation owing to the formation of NPs on opposite sides of the organic layers. In addition, top-emitting OLEDs can be fabricated easily by patterning the encapsulation glass.

Original language	English
Pages (from-to)	27-29
Number of pages	3
Journal	Electronic Materials Letters
Volume	10
Issue number	1
DOIs	https://doi.org/10.1007/s13391-013-3059-5
Publication status	Published - 2014 Jan

Keywords

OLED
imprint
nanopattern
outcoupling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

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10.1007/s13391-013-3059-5

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abstract = "We present a viable method to enhance the current efficiency of organic light-emitting diodes (OLEDs) by imprinting cylindrical nanopatterns (NPs) onto a glass substrate. Herein, OLEDs equipped with an optimum NP array having a diameter of 300 nm and a periodic distance of 500 nm show a 33.4% improvement in current efficiency compared with a device without NPs. The light extraction efficiency of OLEDs was enhanced using a nanopatterned glass substrate, without any electrical degradation owing to the formation of NPs on opposite sides of the organic layers. In addition, top-emitting OLEDs can be fabricated easily by patterning the encapsulation glass.",

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AU - Cho, Joong Yeon

AU - Park, Jaehoon

AU - Lee, Bong Kuk

AU - Baek, Kyu Ha

AU - Lee, Heon

AU - Do, Lee Mi

PY - 2014/1

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N2 - We present a viable method to enhance the current efficiency of organic light-emitting diodes (OLEDs) by imprinting cylindrical nanopatterns (NPs) onto a glass substrate. Herein, OLEDs equipped with an optimum NP array having a diameter of 300 nm and a periodic distance of 500 nm show a 33.4% improvement in current efficiency compared with a device without NPs. The light extraction efficiency of OLEDs was enhanced using a nanopatterned glass substrate, without any electrical degradation owing to the formation of NPs on opposite sides of the organic layers. In addition, top-emitting OLEDs can be fabricated easily by patterning the encapsulation glass.

AB - We present a viable method to enhance the current efficiency of organic light-emitting diodes (OLEDs) by imprinting cylindrical nanopatterns (NPs) onto a glass substrate. Herein, OLEDs equipped with an optimum NP array having a diameter of 300 nm and a periodic distance of 500 nm show a 33.4% improvement in current efficiency compared with a device without NPs. The light extraction efficiency of OLEDs was enhanced using a nanopatterned glass substrate, without any electrical degradation owing to the formation of NPs on opposite sides of the organic layers. In addition, top-emitting OLEDs can be fabricated easily by patterning the encapsulation glass.

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KW - nanopattern

KW - outcoupling

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Improvement of light out-coupling efficiency in organic light-emitting diodes with variable nanopatterns

Abstract

Keywords

ASJC Scopus subject areas

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