Controlled positioning of metal nanoparticles in an organic light-emitting device for enhanced quantum efficiency

Hyangki Sung; Jongcheon Lee; Kyuhee Han; Jong Kwon Lee; Jooyoung Sung; Dongho Kim; Mansoo Choi; Changsoon Kim

doi:10.1016/j.orgel.2013.11.038

Controlled positioning of metal nanoparticles in an organic light-emitting device for enhanced quantum efficiency

Hyangki Sung, Jongcheon Lee, Kyuhee Han, Jong Kwon Lee, Jooyoung Sung, Dongho Kim, Mansoo Choi, Changsoon Kim

Department of Chemistry

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

38 Citations (Scopus)

Abstract

It is shown that there exists an optimum distance between the plane where nanoparticles (NPs) are positioned and the active layer of Au-NP-embedded organic light-emitting devices (OLEDs) for the maximum external quantum efficiency. Au NPs are precisely positioned in a specific plane in the hole-transport layer using a dry, room-temperature aerosol technique at atmospheric pressure. By controlling the position of the Au NPs and their density, we optimize the external quantum efficiency of the Au-NP-embedded OLEDs, with the maximum efficiency being 38% larger than that of the control device without Au NPs. In contrast to commonly employed methods to incorporate metal NPs in an organic layer, such as vacuum thermal evaporation or spin coating, the aerosol-deposited Au NPs do not penetrate into the underlying organic layer, not only allowing for precise control of the vertical (perpendicular to the substrate surface) position of the Au NPs, but also minimizing damage to the hole-transport organic material. Our electrical and optical characterizations show that the existence of the optimal distance occurs by the competition between the increased electron-hole recombination probability caused by the electrostatic effects of holes trapped in the Au NPs and the metal induced quenching.

Original language	English
Pages (from-to)	491-499
Number of pages	9
Journal	Organic Electronics
Volume	15
Issue number	2
DOIs	https://doi.org/10.1016/j.orgel.2013.11.038
Publication status	Published - 2014 Feb

Bibliographical note

Funding Information:
This work was supported by the Global Frontier R&D Program on Center for Multiscale Energy System (Grant Nos. 2011-0031561 and 2012M3A6A7054855) and the Engineering Research Center Program (Grant No. 2009-0093428 ), both by the National Research Foundation (NRF) under the Ministry of Science, ICT, and Future Planning, Korea. The work at Yonsei was supported by the Mid-career Researcher ( 2010-0029668 ) and World Class University ( R32-2010-000-10217 ) Programs of NRF grant funded by MEST of Korea, and AFSOR/AOARD Grant ( FA2386-10-1-4080 ) (D. K.).

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1016/j.orgel.2013.11.038

Cite this

@article{9dc0419e8ce94490b84f99c2a109bc45,

title = "Controlled positioning of metal nanoparticles in an organic light-emitting device for enhanced quantum efficiency",

abstract = "It is shown that there exists an optimum distance between the plane where nanoparticles (NPs) are positioned and the active layer of Au-NP-embedded organic light-emitting devices (OLEDs) for the maximum external quantum efficiency. Au NPs are precisely positioned in a specific plane in the hole-transport layer using a dry, room-temperature aerosol technique at atmospheric pressure. By controlling the position of the Au NPs and their density, we optimize the external quantum efficiency of the Au-NP-embedded OLEDs, with the maximum efficiency being 38% larger than that of the control device without Au NPs. In contrast to commonly employed methods to incorporate metal NPs in an organic layer, such as vacuum thermal evaporation or spin coating, the aerosol-deposited Au NPs do not penetrate into the underlying organic layer, not only allowing for precise control of the vertical (perpendicular to the substrate surface) position of the Au NPs, but also minimizing damage to the hole-transport organic material. Our electrical and optical characterizations show that the existence of the optimal distance occurs by the competition between the increased electron-hole recombination probability caused by the electrostatic effects of holes trapped in the Au NPs and the metal induced quenching.",

author = "Hyangki Sung and Jongcheon Lee and Kyuhee Han and Lee, {Jong Kwon} and Jooyoung Sung and Dongho Kim and Mansoo Choi and Changsoon Kim",

note = "Funding Information: This work was supported by the Global Frontier R&D Program on Center for Multiscale Energy System (Grant Nos. 2011-0031561 and 2012M3A6A7054855) and the Engineering Research Center Program (Grant No. 2009-0093428 ), both by the National Research Foundation (NRF) under the Ministry of Science, ICT, and Future Planning, Korea. The work at Yonsei was supported by the Mid-career Researcher ( 2010-0029668 ) and World Class University ( R32-2010-000-10217 ) Programs of NRF grant funded by MEST of Korea, and AFSOR/AOARD Grant ( FA2386-10-1-4080 ) (D. K.). ",

year = "2014",

month = feb,

doi = "10.1016/j.orgel.2013.11.038",

language = "English",

volume = "15",

pages = "491--499",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier",

number = "2",

}

TY - JOUR

T1 - Controlled positioning of metal nanoparticles in an organic light-emitting device for enhanced quantum efficiency

AU - Sung, Hyangki

AU - Lee, Jongcheon

AU - Han, Kyuhee

AU - Lee, Jong Kwon

AU - Sung, Jooyoung

AU - Kim, Dongho

AU - Choi, Mansoo

AU - Kim, Changsoon

N1 - Funding Information: This work was supported by the Global Frontier R&D Program on Center for Multiscale Energy System (Grant Nos. 2011-0031561 and 2012M3A6A7054855) and the Engineering Research Center Program (Grant No. 2009-0093428 ), both by the National Research Foundation (NRF) under the Ministry of Science, ICT, and Future Planning, Korea. The work at Yonsei was supported by the Mid-career Researcher ( 2010-0029668 ) and World Class University ( R32-2010-000-10217 ) Programs of NRF grant funded by MEST of Korea, and AFSOR/AOARD Grant ( FA2386-10-1-4080 ) (D. K.).

PY - 2014/2

Y1 - 2014/2

N2 - It is shown that there exists an optimum distance between the plane where nanoparticles (NPs) are positioned and the active layer of Au-NP-embedded organic light-emitting devices (OLEDs) for the maximum external quantum efficiency. Au NPs are precisely positioned in a specific plane in the hole-transport layer using a dry, room-temperature aerosol technique at atmospheric pressure. By controlling the position of the Au NPs and their density, we optimize the external quantum efficiency of the Au-NP-embedded OLEDs, with the maximum efficiency being 38% larger than that of the control device without Au NPs. In contrast to commonly employed methods to incorporate metal NPs in an organic layer, such as vacuum thermal evaporation or spin coating, the aerosol-deposited Au NPs do not penetrate into the underlying organic layer, not only allowing for precise control of the vertical (perpendicular to the substrate surface) position of the Au NPs, but also minimizing damage to the hole-transport organic material. Our electrical and optical characterizations show that the existence of the optimal distance occurs by the competition between the increased electron-hole recombination probability caused by the electrostatic effects of holes trapped in the Au NPs and the metal induced quenching.

AB - It is shown that there exists an optimum distance between the plane where nanoparticles (NPs) are positioned and the active layer of Au-NP-embedded organic light-emitting devices (OLEDs) for the maximum external quantum efficiency. Au NPs are precisely positioned in a specific plane in the hole-transport layer using a dry, room-temperature aerosol technique at atmospheric pressure. By controlling the position of the Au NPs and their density, we optimize the external quantum efficiency of the Au-NP-embedded OLEDs, with the maximum efficiency being 38% larger than that of the control device without Au NPs. In contrast to commonly employed methods to incorporate metal NPs in an organic layer, such as vacuum thermal evaporation or spin coating, the aerosol-deposited Au NPs do not penetrate into the underlying organic layer, not only allowing for precise control of the vertical (perpendicular to the substrate surface) position of the Au NPs, but also minimizing damage to the hole-transport organic material. Our electrical and optical characterizations show that the existence of the optimal distance occurs by the competition between the increased electron-hole recombination probability caused by the electrostatic effects of holes trapped in the Au NPs and the metal induced quenching.

UR - http://www.scopus.com/inward/record.url?scp=84891596372&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891596372&partnerID=8YFLogxK

U2 - 10.1016/j.orgel.2013.11.038

DO - 10.1016/j.orgel.2013.11.038

M3 - Article

AN - SCOPUS:84891596372

SN - 1566-1199

VL - 15

SP - 491

EP - 499

JO - Organic Electronics

JF - Organic Electronics

IS - 2

ER -

Controlled positioning of metal nanoparticles in an organic light-emitting device for enhanced quantum efficiency

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this