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

^*Corresponding author for this work

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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title = "Improvement of light out-coupling efficiency in organic light-emitting diodes with variable nanopatterns",

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.",

keywords = "OLED, imprint, nanopattern, outcoupling",

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T1 - Improvement of light out-coupling efficiency in organic light-emitting diodes with variable nanopatterns

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.

KW - OLED

KW - imprint

KW - nanopattern

KW - outcoupling

UR - https://www.scopus.com/pages/publications/84893396911

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DO - 10.1007/s13391-013-3059-5

M3 - Article

AN - SCOPUS:84893396911

SN - 1738-8090

VL - 10

SP - 27

EP - 29

JO - Electronic Materials Letters

JF - Electronic Materials Letters

IS - 1

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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