Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer

Byoung Ho Kang; Do Eok Kim; Se Hyuk Yeom; Kyu Jin Kim; Jun Seon Seo; Jae Hyun Kim; Seong Ho Kong; Jung Hee Lee; Dae Hyuk Kwon; Shin Won Kang

doi:10.1109/NEMS.2010.5592227

Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer

Byoung Ho Kang, Do Eok Kim, Se Hyuk Yeom, Kyu Jin Kim, Jun Seon Seo, Jae Hyun Kim, Seong Ho Kong, Jung Hee Lee, Dae Hyuk Kwon, Shin Won Kang

School of Electronics Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

Recently, researches on nanocrystal quantum dot-based LEDs (NQD-based LEDs) have dramatically increased due to their characteristics resulting in pure and saturated colors with a narrow bandwidth. More importantly, colors can be easily tuned by varying the size or the composition of NQDs, and high quantum yields (QY) of NQDs can increase the efficiency greatly. In spite of high fluorescence QY of NQDs, the reported efficiency of QD-LEDs is still low because the carrier transport is not efficient in the fabricated device. We report efficient electroluminescence in quantum dot-based LEDs by enhancing the electronic coupling of NQDs. 2D array of NQDs formed by spin-coating showed enhanced electrical conductivity. They are incorporated into the light emitting device as an active layer. Current-voltage characteristic and electroluminescent spectra of the device are measured. Electroluminescence efficiency of the device is improved, resulting from the facilitated carrier transport between layers by electronic coupling of NQDs.

Original language	English
Title of host publication	2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010
Pages	832-835
Number of pages	4
DOIs	https://doi.org/10.1109/NEMS.2010.5592227
State	Published - 2010
Event	5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010 - Xiamen, China Duration: 20 Jan 2010 → 23 Jan 2010

Publication series

Name	2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010

Conference

Conference	5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010
Country/Territory	China
City	Xiamen
Period	20/01/10 → 23/01/10

Keywords

Component
LED
Nanocrystal
Quantum dots

Access to Document

10.1109/NEMS.2010.5592227

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Kang, B. H., Kim, D. E., Yeom, S. H., Kim, K. J., Seo, J. S., Kim, J. H., Kong, S. H., Lee, J. H., Kwon, D. H., & Kang, S. W. (2010). Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer. In 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010 (pp. 832-835). Article 5592227 (2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010). https://doi.org/10.1109/NEMS.2010.5592227

@inproceedings{263e108b4d294c7c9da60d630024c3d7,

title = "Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer",

abstract = "Recently, researches on nanocrystal quantum dot-based LEDs (NQD-based LEDs) have dramatically increased due to their characteristics resulting in pure and saturated colors with a narrow bandwidth. More importantly, colors can be easily tuned by varying the size or the composition of NQDs, and high quantum yields (QY) of NQDs can increase the efficiency greatly. In spite of high fluorescence QY of NQDs, the reported efficiency of QD-LEDs is still low because the carrier transport is not efficient in the fabricated device. We report efficient electroluminescence in quantum dot-based LEDs by enhancing the electronic coupling of NQDs. 2D array of NQDs formed by spin-coating showed enhanced electrical conductivity. They are incorporated into the light emitting device as an active layer. Current-voltage characteristic and electroluminescent spectra of the device are measured. Electroluminescence efficiency of the device is improved, resulting from the facilitated carrier transport between layers by electronic coupling of NQDs.",

keywords = "Component, LED, Nanocrystal, Quantum dots",

author = "Kang, {Byoung Ho} and Kim, {Do Eok} and Yeom, {Se Hyuk} and Kim, {Kyu Jin} and Seo, {Jun Seon} and Kim, {Jae Hyun} and Kong, {Seong Ho} and Lee, {Jung Hee} and Kwon, {Dae Hyuk} and Kang, {Shin Won}",

year = "2010",

doi = "10.1109/NEMS.2010.5592227",

language = "English",

isbn = "9781424465439",

series = "2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010",

pages = "832--835",

booktitle = "2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010",

note = "5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010 ; Conference date: 20-01-2010 Through 23-01-2010",

}

Kang, BH, Kim, DE, Yeom, SH, Kim, KJ, Seo, JS, Kim, JH, Kong, SH, Lee, JH, Kwon, DH & Kang, SW 2010, Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer. in 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010., 5592227, 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010, pp. 832-835, 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010, Xiamen, China, 20/01/10. https://doi.org/10.1109/NEMS.2010.5592227

Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer. / Kang, Byoung Ho; Kim, Do Eok; Yeom, Se Hyuk et al.
2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010. 2010. p. 832-835 5592227 (2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer

AU - Kang, Byoung Ho

AU - Kim, Do Eok

AU - Yeom, Se Hyuk

AU - Kim, Kyu Jin

AU - Seo, Jun Seon

AU - Kim, Jae Hyun

AU - Kong, Seong Ho

AU - Lee, Jung Hee

AU - Kwon, Dae Hyuk

AU - Kang, Shin Won

PY - 2010

Y1 - 2010

N2 - Recently, researches on nanocrystal quantum dot-based LEDs (NQD-based LEDs) have dramatically increased due to their characteristics resulting in pure and saturated colors with a narrow bandwidth. More importantly, colors can be easily tuned by varying the size or the composition of NQDs, and high quantum yields (QY) of NQDs can increase the efficiency greatly. In spite of high fluorescence QY of NQDs, the reported efficiency of QD-LEDs is still low because the carrier transport is not efficient in the fabricated device. We report efficient electroluminescence in quantum dot-based LEDs by enhancing the electronic coupling of NQDs. 2D array of NQDs formed by spin-coating showed enhanced electrical conductivity. They are incorporated into the light emitting device as an active layer. Current-voltage characteristic and electroluminescent spectra of the device are measured. Electroluminescence efficiency of the device is improved, resulting from the facilitated carrier transport between layers by electronic coupling of NQDs.

AB - Recently, researches on nanocrystal quantum dot-based LEDs (NQD-based LEDs) have dramatically increased due to their characteristics resulting in pure and saturated colors with a narrow bandwidth. More importantly, colors can be easily tuned by varying the size or the composition of NQDs, and high quantum yields (QY) of NQDs can increase the efficiency greatly. In spite of high fluorescence QY of NQDs, the reported efficiency of QD-LEDs is still low because the carrier transport is not efficient in the fabricated device. We report efficient electroluminescence in quantum dot-based LEDs by enhancing the electronic coupling of NQDs. 2D array of NQDs formed by spin-coating showed enhanced electrical conductivity. They are incorporated into the light emitting device as an active layer. Current-voltage characteristic and electroluminescent spectra of the device are measured. Electroluminescence efficiency of the device is improved, resulting from the facilitated carrier transport between layers by electronic coupling of NQDs.

KW - Component

KW - LED

KW - Nanocrystal

KW - Quantum dots

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U2 - 10.1109/NEMS.2010.5592227

DO - 10.1109/NEMS.2010.5592227

M3 - Conference contribution

AN - SCOPUS:78649314088

SN - 9781424465439

T3 - 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010

SP - 832

EP - 835

BT - 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010

T2 - 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010

Y2 - 20 January 2010 through 23 January 2010

ER -

Kang BH, Kim DE, Yeom SH, Kim KJ, Seo JS, Kim JH et al. Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer. In 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010. 2010. p. 832-835. 5592227. (2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010). doi: 10.1109/NEMS.2010.5592227

Fabrication of organic/inorganic LED device using nanocrystal quantum dots as active layer

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