Efficient blue phosphorescent organic light-emitting diodes enabled by Ag-nanoparticles-embedded hole transporting layer

Zheng Zhong, Hong Lian, Jian Wu, Xiaozhe Cheng, Hua Wang, Qingchen Dong*, Fu Rong ZHU

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

11 Citations (Scopus)

Abstract

We reported our effort to develop efficient blue phosphorescent organic light-emitting diodes (PhOLEDs) by embedding an ultrathin layer of Ag nanoparticles (NPs) in the hole transporting layer (HTL). The experimental results support the theoretical simulation in showing that the enhancement in EL performance of the PhOLEDs was attained via the coupling between the excitons and the localized surface plasmons, generated by the embedded Ag NPs in the HTL. Compared to the control device with a conventional organic HTL, the PhOLEDs with an Ag-NPs-embedded HTL have an enhanced luminous efficiency of 31.50 cd/A and a higher power efficiency of 19.08 lm/W, that were 2.5 times higher than the luminous efficiency of a control PhOLED (12.75 cd/A) and 2.4 times higher than the power efficiency of the control device (8.35 lm/W). The use of an Ag-NPs-embedded HTL also is beneficial for reducing the efficiency roll-off in blue PhOLEDs.

Original languageEnglish
Pages (from-to)31-36
Number of pages6
JournalOrganic Electronics
Volume56
DOIs
Publication statusPublished - May 2018

Scopus Subject Areas

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

User-Defined Keywords

  • Ag nanoparticles
  • Blue PhOLED
  • Localized surface plasmons
  • Optimization

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