Control of oxygen vacancy in zno nanoparticles electron transport layer by intense pulsed-light post-treatment under fabrication of ink-jet printed qleds

Young Joon Han; Jun Yeob Lee; Kyung Tae Kang; Byeong Kwon Ju; Kwan Hyun Cho

doi:10.1002/sdtp.14849

Control of oxygen vacancy in zno nanoparticles electron transport layer by intense pulsed-light post-treatment under fabrication of ink-jet printed qleds

Young Joon Han, Jun Yeob Lee, Kyung Tae Kang, Byeong Kwon Ju, Kwan Hyun Cho

School of Electrical Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

Previously, we reported that the charge injection balance in spin-coated quantum-dot light-emitting diodes (QLED) was achieved by controlling the current density characteristics via filling of the oxygen vacancies in Zinc oxide (ZnO) nanoparticles (NPs) through intense-pulsed light (IPL) posttreatment [1]. In this work, we investigated the IPL postedtreatment induced charge balance and stability of device performance prepared by the ink-jet printed QLED. Oxygen vacancies (VO) in the ZnO wurtzite structure were filled with oxygen by IPL post-treatment process in the air atmosphere, and the ink-jet printed QLED performance remained stable during the 8 day measurement period. The current efficiency (CE) and external quantum efficiency (EQE) characteristics of ink-jet printed QLED showed a tendency to stabilize from the 2^nd day, and the performance of the device were 34122 cd/m² luminance, 7.3513 cd/A CE, and 1.943 % EQE.

Original language	English
Pages (from-to)	963-966
Number of pages	4
Journal	Digest of Technical Papers - SID International Symposium
Volume	52
Issue number	1
DOIs	https://doi.org/10.1002/sdtp.14849
Publication status	Published - 2021
Event	58th International Symposium on Digest of Technical Papers, ICDT 2021 - Virtual, Online Duration: 2021 May 17 → 2021 May 21

Keywords

Ink-jet printing
Intense-pulsed light (IPL)
Quantum-dot light emitting diodes (QLED)
ZnO nanoparticles (NPs)

ASJC Scopus subject areas

Engineering(all)

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10.1002/sdtp.14849

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Control of oxygen vacancy in zno nanoparticles electron transport layer by intense pulsed-light post-treatment under fabrication of ink-jet printed qleds. / Han, Young Joon; Lee, Jun Yeob; Kang, Kyung Tae; Ju, Byeong Kwon; Cho, Kwan Hyun.

In: Digest of Technical Papers - SID International Symposium, Vol. 52, No. 1, 2021, p. 963-966.

Research output: Contribution to journal › Conference article › peer-review

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title = "Control of oxygen vacancy in zno nanoparticles electron transport layer by intense pulsed-light post-treatment under fabrication of ink-jet printed qleds",

abstract = "Previously, we reported that the charge injection balance in spin-coated quantum-dot light-emitting diodes (QLED) was achieved by controlling the current density characteristics via filling of the oxygen vacancies in Zinc oxide (ZnO) nanoparticles (NPs) through intense-pulsed light (IPL) posttreatment [1]. In this work, we investigated the IPL postedtreatment induced charge balance and stability of device performance prepared by the ink-jet printed QLED. Oxygen vacancies (VO) in the ZnO wurtzite structure were filled with oxygen by IPL post-treatment process in the air atmosphere, and the ink-jet printed QLED performance remained stable during the 8 day measurement period. The current efficiency (CE) and external quantum efficiency (EQE) characteristics of ink-jet printed QLED showed a tendency to stabilize from the 2nd day, and the performance of the device were 34122 cd/m2 luminance, 7.3513 cd/A CE, and 1.943 % EQE.",

keywords = "Ink-jet printing, Intense-pulsed light (IPL), Quantum-dot light emitting diodes (QLED), ZnO nanoparticles (NPs)",

author = "Han, {Young Joon} and Lee, {Jun Yeob} and Kang, {Kyung Tae} and Ju, {Byeong Kwon} and Cho, {Kwan Hyun}",

note = "Funding Information: This study was supported by Ministry of Trade, Industry & Energy (MOTIE, No. 10077471). Publisher Copyright: {\textcopyright} 2021 SID.; 58th International Symposium on Digest of Technical Papers, ICDT 2021 ; Conference date: 17-05-2021 Through 21-05-2021",

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AU - Cho, Kwan Hyun

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AB - Previously, we reported that the charge injection balance in spin-coated quantum-dot light-emitting diodes (QLED) was achieved by controlling the current density characteristics via filling of the oxygen vacancies in Zinc oxide (ZnO) nanoparticles (NPs) through intense-pulsed light (IPL) posttreatment [1]. In this work, we investigated the IPL postedtreatment induced charge balance and stability of device performance prepared by the ink-jet printed QLED. Oxygen vacancies (VO) in the ZnO wurtzite structure were filled with oxygen by IPL post-treatment process in the air atmosphere, and the ink-jet printed QLED performance remained stable during the 8 day measurement period. The current efficiency (CE) and external quantum efficiency (EQE) characteristics of ink-jet printed QLED showed a tendency to stabilize from the 2nd day, and the performance of the device were 34122 cd/m2 luminance, 7.3513 cd/A CE, and 1.943 % EQE.

KW - Ink-jet printing

KW - Intense-pulsed light (IPL)

KW - Quantum-dot light emitting diodes (QLED)

KW - ZnO nanoparticles (NPs)

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Control of oxygen vacancy in zno nanoparticles electron transport layer by intense pulsed-light post-treatment under fabrication of ink-jet printed qleds

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