Abstract
We demonstrated light extraction improvement by applying a scattering layer of Ag nanoparticles physically synthesized through a low-temperature annealing process to flexible organic light-emitting diodes (OLEDs). In general, increasing the size of Ag nanoparticles is preferred to increase light scattering, but a high-temperature annealing process (∼400 °C) is required to produce them. However, flexible substrates generally cannot withstand high-temperature processes. In this study, we formed Ag nanoparticles at a low temperature of ∼200 °C by inserting a poly(3,4-ethylenedioxythiophene) polystyrene sulfonate buffer layer, thus promoting Ag dewetting. As a result, the scattering layer of enlarged Ag nanoparticles formed at low temperatures increased the external quantum efficiency by 24% in a flexible OLED compared to a reference device.
| Original language | English |
|---|---|
| Pages (from-to) | 32373-32379 |
| Number of pages | 7 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 10 |
| Issue number | 38 |
| DOIs | |
| Publication status | Published - 2018 Sep 26 |
| Externally published | Yes |
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Keywords
- light extraction
- light scattering
- metal nanoparticles
- organic light-emitting diodes (OLEDs)
- plasmonics
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Light Extraction Enhancement in Flexible Organic Light-Emitting Diodes by a Light-Scattering Layer of Dewetted Ag Nanoparticles at Low Temperatures. / Choi, Junhee; Kim, Seonju; Park, Cheol Hwee; Kwack, Jin Ho; Park, Chan Hyuk; Hwang, Ha; Im, Hyeong Seop; Park, Young Wook; Ju, Byeong Kwon.
In: ACS Applied Materials and Interfaces, Vol. 10, No. 38, 26.09.2018, p. 32373-32379.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Light Extraction Enhancement in Flexible Organic Light-Emitting Diodes by a Light-Scattering Layer of Dewetted Ag Nanoparticles at Low Temperatures
AU - Choi, Junhee
AU - Kim, Seonju
AU - Park, Cheol Hwee
AU - Kwack, Jin Ho
AU - Park, Chan Hyuk
AU - Hwang, Ha
AU - Im, Hyeong Seop
AU - Park, Young Wook
AU - Ju, Byeong Kwon
PY - 2018/9/26
Y1 - 2018/9/26
N2 - We demonstrated light extraction improvement by applying a scattering layer of Ag nanoparticles physically synthesized through a low-temperature annealing process to flexible organic light-emitting diodes (OLEDs). In general, increasing the size of Ag nanoparticles is preferred to increase light scattering, but a high-temperature annealing process (∼400 °C) is required to produce them. However, flexible substrates generally cannot withstand high-temperature processes. In this study, we formed Ag nanoparticles at a low temperature of ∼200 °C by inserting a poly(3,4-ethylenedioxythiophene) polystyrene sulfonate buffer layer, thus promoting Ag dewetting. As a result, the scattering layer of enlarged Ag nanoparticles formed at low temperatures increased the external quantum efficiency by 24% in a flexible OLED compared to a reference device.
AB - We demonstrated light extraction improvement by applying a scattering layer of Ag nanoparticles physically synthesized through a low-temperature annealing process to flexible organic light-emitting diodes (OLEDs). In general, increasing the size of Ag nanoparticles is preferred to increase light scattering, but a high-temperature annealing process (∼400 °C) is required to produce them. However, flexible substrates generally cannot withstand high-temperature processes. In this study, we formed Ag nanoparticles at a low temperature of ∼200 °C by inserting a poly(3,4-ethylenedioxythiophene) polystyrene sulfonate buffer layer, thus promoting Ag dewetting. As a result, the scattering layer of enlarged Ag nanoparticles formed at low temperatures increased the external quantum efficiency by 24% in a flexible OLED compared to a reference device.
KW - light extraction
KW - light scattering
KW - metal nanoparticles
KW - organic light-emitting diodes (OLEDs)
KW - plasmonics
UR - http://www.scopus.com/inward/record.url?scp=85053630898&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85053630898&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b07026
DO - 10.1021/acsami.8b07026
M3 - Article
VL - 10
SP - 32373
EP - 32379
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 38
ER -