Effect of time-dependent characteristics of zno nanoparticles electron transport layer improved by intense-pulsed light post-treatment on hole-electron injection balance of quantum-dot light-emitting diodes

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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We investigated the effect of intense-pulsed light (IPL) post-treatment on the time-dependent characteristics of ZnO nanoparticles (NPs) used as an electron transport layer (ETL) of quantum-dot light-emitting diodes (QLEDs). The time-dependent characteristics of the charge injection balance in QLEDs was observed by fabrication and analysis of single carrier devices (SCDs), and it was confirmed that the time-dependent characteristics of the ZnO NPs affect the device characteristics of QLEDs. Stabilization of the ZnO NPs film properties for improvement of the charge injection balance in QLEDs was achieved by controlling the current density characteristics via filling of the oxygen vacancies by IPL post-treatment.

Original languageEnglish
Article number5041
Pages (from-to)1-11
Number of pages11
JournalMaterials
Volume13
Issue number21
DOIs
Publication statusPublished - 2020 Nov

Keywords

  • Intense-pulsed light (IPL)
  • Quantum-dot (QD)
  • Quantum-dot light-emitting diodes (QLEDs)
  • Zinc-oxide nanoparticles (ZnO NPs)

ASJC Scopus subject areas

  • Materials Science(all)

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