Solution-processible corrugated structure and scattering layer for enhanced light extraction from organic light-emitting diodes

Woo Jin Hyun; Sang Hyuk Im; O. Ok Park; Byung Doo Chin

doi:10.1080/15980316.2012.742470

Solution-processible corrugated structure and scattering layer for enhanced light extraction from organic light-emitting diodes

Woo Jin Hyun, Sang Hyuk Im, O. Ok Park, Byung Doo Chin

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

5 Scopus citations

Abstract

A simple method of fabricating out-coupling structures was demonstrated via solution-processing to enhance light extraction from organic light-emitting diodes (OLEDs). Scattering layers were easily obtained by spin-coating an SiO₂ sol solution that contained TiO₂ particles. By introducing the scattering layer and the solution-processible corrugated structure as internal and external extraction layers, the OLEDs showed increased external quantum efficiency without a change in the electroluminescence spectrum compared to conventional devices. Using these solution-processible out-coupling structures, nearly all-solution-processed OLEDs with enhanced light extraction could be fabricated. The light extraction enhancement is attributed to the suppression by the out-coupling structures of the light-trapping that arose at the interface of the glass substrate and the air.

Original language	English
Pages (from-to)	151-157
Number of pages	7
Journal	Journal of Information Display
Volume	13
Issue number	4
DOIs	https://doi.org/10.1080/15980316.2012.742470
State	Published - Dec 2012
Externally published	Yes

Keywords

corrugated structure
light extraction
organic light-emitting diodes
scattering layer
sol-gel

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10.1080/15980316.2012.742470

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title = "Solution-processible corrugated structure and scattering layer for enhanced light extraction from organic light-emitting diodes",

abstract = "A simple method of fabricating out-coupling structures was demonstrated via solution-processing to enhance light extraction from organic light-emitting diodes (OLEDs). Scattering layers were easily obtained by spin-coating an SiO2 sol solution that contained TiO2 particles. By introducing the scattering layer and the solution-processible corrugated structure as internal and external extraction layers, the OLEDs showed increased external quantum efficiency without a change in the electroluminescence spectrum compared to conventional devices. Using these solution-processible out-coupling structures, nearly all-solution-processed OLEDs with enhanced light extraction could be fabricated. The light extraction enhancement is attributed to the suppression by the out-coupling structures of the light-trapping that arose at the interface of the glass substrate and the air.",

keywords = "corrugated structure, light extraction, organic light-emitting diodes, scattering layer, sol-gel",

author = "Hyun, {Woo Jin} and Im, {Sang Hyuk} and Park, {O. Ok} and Chin, {Byung Doo}",

note = "Funding Information: This research was supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF), which is funded by the Ministry of Education, Science, and Technology (CAFDC-20120000821). This work was supported by the collaborative R&D program with technology advanced country “Development of materials and stacked device structure for next-generation solar cells, 2010-advanced-B-105” by the Ministry of Knowledge and Economy.",

year = "2012",

month = dec,

doi = "10.1080/15980316.2012.742470",

language = "英语",

volume = "13",

pages = "151--157",

journal = "Journal of Information Display",

issn = "1598-0316",

publisher = "Taylor and Francis Ltd.",

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AU - Hyun, Woo Jin

AU - Im, Sang Hyuk

AU - Park, O. Ok

AU - Chin, Byung Doo

N1 - Funding Information: This research was supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF), which is funded by the Ministry of Education, Science, and Technology (CAFDC-20120000821). This work was supported by the collaborative R&D program with technology advanced country “Development of materials and stacked device structure for next-generation solar cells, 2010-advanced-B-105” by the Ministry of Knowledge and Economy.

PY - 2012/12

Y1 - 2012/12

N2 - A simple method of fabricating out-coupling structures was demonstrated via solution-processing to enhance light extraction from organic light-emitting diodes (OLEDs). Scattering layers were easily obtained by spin-coating an SiO2 sol solution that contained TiO2 particles. By introducing the scattering layer and the solution-processible corrugated structure as internal and external extraction layers, the OLEDs showed increased external quantum efficiency without a change in the electroluminescence spectrum compared to conventional devices. Using these solution-processible out-coupling structures, nearly all-solution-processed OLEDs with enhanced light extraction could be fabricated. The light extraction enhancement is attributed to the suppression by the out-coupling structures of the light-trapping that arose at the interface of the glass substrate and the air.

AB - A simple method of fabricating out-coupling structures was demonstrated via solution-processing to enhance light extraction from organic light-emitting diodes (OLEDs). Scattering layers were easily obtained by spin-coating an SiO2 sol solution that contained TiO2 particles. By introducing the scattering layer and the solution-processible corrugated structure as internal and external extraction layers, the OLEDs showed increased external quantum efficiency without a change in the electroluminescence spectrum compared to conventional devices. Using these solution-processible out-coupling structures, nearly all-solution-processed OLEDs with enhanced light extraction could be fabricated. The light extraction enhancement is attributed to the suppression by the out-coupling structures of the light-trapping that arose at the interface of the glass substrate and the air.

KW - corrugated structure

KW - light extraction

KW - organic light-emitting diodes

KW - scattering layer

KW - sol-gel

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ER -

Solution-processible corrugated structure and scattering layer for enhanced light extraction from organic light-emitting diodes

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Keywords

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