Dual pattern for enhancing light extraction efficiency of white organic light-emitting diodes

Kwan Kim; Kyoung Hoon Han; Yang Doo Kim; Daihong Huh; Yoonjay Han; Heon Lee; Jang Joo Kim

doi:10.1016/j.orgel.2018.03.011

Dual pattern for enhancing light extraction efficiency of white organic light-emitting diodes

Kwan Kim, Kyoung Hoon Han, Yang Doo Kim, Daihong Huh, Yoonjay Han, Heon Lee, Jang Joo Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

Nano and micro-patterns (dual patterns) were introduced on a glass substrate as an extraction layer to enhance the light extraction efficiency of white organic light-emitting diodes (WOLEDs). The dual-patterned glass was fabricated by thermal evaporation, direct printing, and reactive ion etching. The combination of nano- and micro-structures imparted highest current density and luminance to the dual-patterned WOLED without electrical degradation. Additionally, the dual-patterned WOLED exhibited higher current and power efficiencies compared to that of the nano- and micro-patterned WOLEDs, which increased by 21% and 27% at 1 mA/cm², respectively, as compared to that of the reference.

Original language	English
Pages (from-to)	201-205
Number of pages	5
Journal	Organic Electronics: physics, materials, applications
Volume	57
DOIs	https://doi.org/10.1016/j.orgel.2018.03.011
Publication status	Published - 2018 Jun 1

Keywords

3-D structure
External scattering layer
Light extraction efficiency
Nano and micro pattern
Nanoimprint lithography
OLED

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Chemistry(all)
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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Kim, K., Han, K. H., Kim, Y. D., Huh, D., Han, Y., Lee, H., & Kim, J. J. (2018). Dual pattern for enhancing light extraction efficiency of white organic light-emitting diodes. Organic Electronics: physics, materials, applications, 57, 201-205. https://doi.org/10.1016/j.orgel.2018.03.011

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abstract = "Nano and micro-patterns (dual patterns) were introduced on a glass substrate as an extraction layer to enhance the light extraction efficiency of white organic light-emitting diodes (WOLEDs). The dual-patterned glass was fabricated by thermal evaporation, direct printing, and reactive ion etching. The combination of nano- and micro-structures imparted highest current density and luminance to the dual-patterned WOLED without electrical degradation. Additionally, the dual-patterned WOLED exhibited higher current and power efficiencies compared to that of the nano- and micro-patterned WOLEDs, which increased by 21% and 27% at 1 mA/cm2, respectively, as compared to that of the reference.",

keywords = "3-D structure, External scattering layer, Light extraction efficiency, Nano and micro pattern, Nanoimprint lithography, OLED",

author = "Kwan Kim and Han, {Kyoung Hoon} and Kim, {Yang Doo} and Daihong Huh and Yoonjay Han and Heon Lee and Kim, {Jang Joo}",

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AU - Kim, Kwan

AU - Han, Kyoung Hoon

AU - Kim, Yang Doo

AU - Huh, Daihong

AU - Han, Yoonjay

AU - Lee, Heon

AU - Kim, Jang Joo

PY - 2018/6/1

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AB - Nano and micro-patterns (dual patterns) were introduced on a glass substrate as an extraction layer to enhance the light extraction efficiency of white organic light-emitting diodes (WOLEDs). The dual-patterned glass was fabricated by thermal evaporation, direct printing, and reactive ion etching. The combination of nano- and micro-structures imparted highest current density and luminance to the dual-patterned WOLED without electrical degradation. Additionally, the dual-patterned WOLED exhibited higher current and power efficiencies compared to that of the nano- and micro-patterned WOLEDs, which increased by 21% and 27% at 1 mA/cm2, respectively, as compared to that of the reference.

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KW - Nanoimprint lithography

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