The crucial role of surface ligands on the properties of thin CdSe/ZnS/CdS/ZnS QD-films for QDLEDs

Mariya A. Zvaigzne, Alexey E. Alexandrov, Pavel S. Samokhvalov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report on the effects of surface organic ligands on the properties of CdSe/ZnS/CdS/ZnS quantum dot (QD) solutions and condensed films. Hexadecylamine, octylamine, hexadecanethiol, octanethiol, thiophenol and inorganic ZnCl2 were used as the QD surface ligands affecting their properties. Here, we analyze optical and electrical properties as well as surface quality of thin films fabricated from the QDs bearing different ligands on their surfaces. We have found that the use of thiol ligands results in QD-films with a uniform surface, sufficient quantum yield and resistance, thus approving their relevance for the use as electroluminescent layers in light emitting diodes.

Original languageEnglish
Title of host publicationFourth International Conference on Applications of Optics and Photonics
EditorsManuel F. M. Costa
PublisherSPIE
ISBN (Electronic)9781510631632
DOIs
Publication statusPublished - 1 Jan 2019
Externally publishedYes
Event4th International Conference on Applications of Optics and Photonics, AOP 2019 - Lisbon, Portugal
Duration: 31 May 20194 Jun 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11207
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference4th International Conference on Applications of Optics and Photonics, AOP 2019
Country/TerritoryPortugal
CityLisbon
Period31/05/194/06/19

Keywords

  • core/shell nanocrystals
  • quantum dot
  • solid QD-films
  • surface ligands

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