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

Research output: Contribution to journalConference articlepeer-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 2nd day, and the performance of the device were 34122 cd/m2 luminance, 7.3513 cd/A CE, and 1.943 % EQE.

Original languageEnglish
Pages (from-to)963-966
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume52
Issue number1
DOIs
Publication statusPublished - 2021
Event58th International Symposium on Digest of Technical Papers, ICDT 2021 - Virtual, Online
Duration: 2021 May 172021 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)

Fingerprint

Dive into the research topics of 'Control of oxygen vacancy in zno nanoparticles electron transport layer by intense pulsed-light post-treatment under fabrication of ink-jet printed qleds'. Together they form a unique fingerprint.

Cite this