Air void optical scattering structure for high-brightness organic light emitting diodes

Young Hoon Sung; Kyung Hoon Han; Yang Doo Kim; Yoonjay Han; Jang Joo Kim; Heon Lee

doi:10.1016/j.ceramint.2017.05.187

Air void optical scattering structure for high-brightness organic light emitting diodes

Young Hoon Sung, Kyung Hoon Han, Yang Doo Kim, Yoonjay Han, Jang Joo Kim, Heon Lee

Department of Materials Science and Engineering

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

5 Citations (Scopus)

Abstract

In order to increase the outcoupling efficiency of organic light emitting diodes (OLEDs), a hexagonal array of air void optical scattering structures was formed on a glass substrate. The air void structure was fabricated by first depositing a monolayer of polystyrene (PS) spheres having a diameter of 820 nm on the substrate. A layer of hydrogen silsesquioxane (HSQ) was then coated on the resulting monolayer and finally, annealing was carried out to burn out the PS spheres and to cure the HSQ layer. The air void optical scattering structure on the glass substrate interacted with the generated photons and suppressed the total internal reflection of light at the surface of the glass. As a result, the OLED fabricated on this glass exhibited a 10% increase in the optical output.

Original language	English
Pages (from-to)	S455-S459
Journal	Ceramics International
Volume	43
DOIs	https://doi.org/10.1016/j.ceramint.2017.05.187
Publication status	Published - 2017 Aug

Keywords

Air void structure
OLED
Outcoupling efficiency
Polystyrene sphere
SiO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2017.05.187

Cite this

@article{c49574f031154a3ea88caedcad4851b3,

title = "Air void optical scattering structure for high-brightness organic light emitting diodes",

abstract = "In order to increase the outcoupling efficiency of organic light emitting diodes (OLEDs), a hexagonal array of air void optical scattering structures was formed on a glass substrate. The air void structure was fabricated by first depositing a monolayer of polystyrene (PS) spheres having a diameter of 820 nm on the substrate. A layer of hydrogen silsesquioxane (HSQ) was then coated on the resulting monolayer and finally, annealing was carried out to burn out the PS spheres and to cure the HSQ layer. The air void optical scattering structure on the glass substrate interacted with the generated photons and suppressed the total internal reflection of light at the surface of the glass. As a result, the OLED fabricated on this glass exhibited a 10% increase in the optical output.",

keywords = "Air void structure, OLED, Outcoupling efficiency, Polystyrene sphere, SiO",

author = "Sung, {Young Hoon} and Han, {Kyung Hoon} and Kim, {Yang Doo} and Yoonjay Han and Kim, {Jang Joo} and Heon Lee",

note = "Funding Information: This research was supported by the Pioneer Research Center Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning (NRF-2013M3C1A3063597). This research was supported by the LG Innotek–Korea University Nano-Photonics Program. This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (2016R1A2B3015400). Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd and Techna Group S.r.l.",

year = "2017",

month = aug,

doi = "10.1016/j.ceramint.2017.05.187",

language = "English",

volume = "43",

pages = "S455--S459",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Air void optical scattering structure for high-brightness organic light emitting diodes

AU - Sung, Young Hoon

AU - Han, Kyung Hoon

AU - Kim, Yang Doo

AU - Han, Yoonjay

AU - Kim, Jang Joo

AU - Lee, Heon

N1 - Funding Information: This research was supported by the Pioneer Research Center Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning (NRF-2013M3C1A3063597). This research was supported by the LG Innotek–Korea University Nano-Photonics Program. This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIP) (2016R1A2B3015400). Publisher Copyright: © 2017 Elsevier Ltd and Techna Group S.r.l.

PY - 2017/8

Y1 - 2017/8

N2 - In order to increase the outcoupling efficiency of organic light emitting diodes (OLEDs), a hexagonal array of air void optical scattering structures was formed on a glass substrate. The air void structure was fabricated by first depositing a monolayer of polystyrene (PS) spheres having a diameter of 820 nm on the substrate. A layer of hydrogen silsesquioxane (HSQ) was then coated on the resulting monolayer and finally, annealing was carried out to burn out the PS spheres and to cure the HSQ layer. The air void optical scattering structure on the glass substrate interacted with the generated photons and suppressed the total internal reflection of light at the surface of the glass. As a result, the OLED fabricated on this glass exhibited a 10% increase in the optical output.

AB - In order to increase the outcoupling efficiency of organic light emitting diodes (OLEDs), a hexagonal array of air void optical scattering structures was formed on a glass substrate. The air void structure was fabricated by first depositing a monolayer of polystyrene (PS) spheres having a diameter of 820 nm on the substrate. A layer of hydrogen silsesquioxane (HSQ) was then coated on the resulting monolayer and finally, annealing was carried out to burn out the PS spheres and to cure the HSQ layer. The air void optical scattering structure on the glass substrate interacted with the generated photons and suppressed the total internal reflection of light at the surface of the glass. As a result, the OLED fabricated on this glass exhibited a 10% increase in the optical output.

KW - Air void structure

KW - OLED

KW - Outcoupling efficiency

KW - Polystyrene sphere

KW - SiO

UR - http://www.scopus.com/inward/record.url?scp=85020411297&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2017.05.187

DO - 10.1016/j.ceramint.2017.05.187

M3 - Article

AN - SCOPUS:85020411297

SN - 0272-8842

VL - 43

SP - S455-S459

JO - Ceramics International

JF - Ceramics International

ER -

Air void optical scattering structure for high-brightness organic light emitting diodes

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this