Enhanced light extraction efficiency of OLEDs with quasiperiodic diffraction grating layer

Tae Bin Lim; Kwan Hyun Cho; Yong Hoon Kim; Yong Cheol Jeong

doi:10.1364/OE.24.017950

Enhanced light extraction efficiency of OLEDs with quasiperiodic diffraction grating layer

Tae Bin Lim, Kwan Hyun Cho, Yong Hoon Kim, Yong Cheol Jeong

Department of Advanced Materials Science and Engineering

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

41 Scopus citations

Abstract

We presented enhanced light extraction efficiency of organic light emitting diodes (OLEDs) cells with a nano-sized diffraction grating layer. Various diffraction gratings of different morphologies including linear, cubic, hexagonal and quasiperiodic patterns were fabricated by multiplexing light interference exposure on an azobenzene thin film. The effect of diffraction grating layer on device performances including luminous properties and quantum efficiency was investigated. In contrast to periodic grating patterns, the quasiperiodic structures leading broadband light extraction resulted in improved external quantum efficiency and power efficiency by 73% and 63%, respectively, compared to conventional OLED with flat surface of glass substrate.

Original language	English
Pages (from-to)	17950-17959
Number of pages	10
Journal	Optics Express
Volume	24
Issue number	16
DOIs	https://doi.org/10.1364/OE.24.017950
State	Published - 8 Aug 2016

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title = "Enhanced light extraction efficiency of OLEDs with quasiperiodic diffraction grating layer",

abstract = "We presented enhanced light extraction efficiency of organic light emitting diodes (OLEDs) cells with a nano-sized diffraction grating layer. Various diffraction gratings of different morphologies including linear, cubic, hexagonal and quasiperiodic patterns were fabricated by multiplexing light interference exposure on an azobenzene thin film. The effect of diffraction grating layer on device performances including luminous properties and quantum efficiency was investigated. In contrast to periodic grating patterns, the quasiperiodic structures leading broadband light extraction resulted in improved external quantum efficiency and power efficiency by 73\% and 63\%, respectively, compared to conventional OLED with flat surface of glass substrate.",

author = "Lim, \{Tae Bin\} and Cho, \{Kwan Hyun\} and Kim, \{Yong Hoon\} and Jeong, \{Yong Cheol\}",

note = "Publisher Copyright: {\textcopyright}2016 Optical Society of America.",

year = "2016",

month = aug,

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doi = "10.1364/OE.24.017950",

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T1 - Enhanced light extraction efficiency of OLEDs with quasiperiodic diffraction grating layer

AU - Lim, Tae Bin

AU - Cho, Kwan Hyun

AU - Kim, Yong Hoon

AU - Jeong, Yong Cheol

PY - 2016/8/8

Y1 - 2016/8/8

N2 - We presented enhanced light extraction efficiency of organic light emitting diodes (OLEDs) cells with a nano-sized diffraction grating layer. Various diffraction gratings of different morphologies including linear, cubic, hexagonal and quasiperiodic patterns were fabricated by multiplexing light interference exposure on an azobenzene thin film. The effect of diffraction grating layer on device performances including luminous properties and quantum efficiency was investigated. In contrast to periodic grating patterns, the quasiperiodic structures leading broadband light extraction resulted in improved external quantum efficiency and power efficiency by 73% and 63%, respectively, compared to conventional OLED with flat surface of glass substrate.

AB - We presented enhanced light extraction efficiency of organic light emitting diodes (OLEDs) cells with a nano-sized diffraction grating layer. Various diffraction gratings of different morphologies including linear, cubic, hexagonal and quasiperiodic patterns were fabricated by multiplexing light interference exposure on an azobenzene thin film. The effect of diffraction grating layer on device performances including luminous properties and quantum efficiency was investigated. In contrast to periodic grating patterns, the quasiperiodic structures leading broadband light extraction resulted in improved external quantum efficiency and power efficiency by 73% and 63%, respectively, compared to conventional OLED with flat surface of glass substrate.

UR - https://www.scopus.com/pages/publications/84987622067

U2 - 10.1364/OE.24.017950

DO - 10.1364/OE.24.017950

M3 - Article

AN - SCOPUS:84987622067

SN - 1094-4087

VL - 24

SP - 17950

EP - 17959

JO - Optics Express

JF - Optics Express

IS - 16

ER -

Enhanced light extraction efficiency of OLEDs with quasiperiodic diffraction grating layer

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