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

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

22 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 - Kim, Jeong Ho

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

Y1 - 2014/1

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 - imprint

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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