Improved performance of perovskite light-emitting diodes by quantum confinement effect in perovskite nanocrystals

Lung Chien Chen, Zong Liang Tseng, Dai Wei Lin, Yu Shiang Lin, Sheng Hui Chen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In this study, we demonstrate an easy and reliable solution-processed technique using an extra adductive in the perovskite precursor solution. Using this method, a dense and uniform morphology with full surface coverage and highly fluorescent films with nanoscale crystal grains can be obtained. The high exciton binding energy in the resulting films employing octylammonium bromide (OAB) adductives proved that high fluorescence originated from the quantum confinement effect. The corresponding perovskite light-emitting diodes (PeLEDs) that were based on this technique also exhibited excellent device performance.

Original languageEnglish
Article number459
JournalNanomaterials
Volume8
Issue number7
DOIs
StatePublished - Jul 2018

Keywords

  • OAB
  • PeLEDs
  • Perovskite
  • Quantum confinement effect

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