Destabilizing Magic-Sized Clusters for Synthesis of Monodisperse and Highly Luminescent In(Zn)P/ZnSe/ZnS Quantum Dots

Joon Hee Jo, Ho Seok Heo, Chaemin Yun, Seungho Baek, Kangtaek Lee

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We report a novel synthesis of monodisperse In(Zn)P/ZnSe/ZnS quantum dots (QDs) with a high photoluminescence quantum yield and stability. The formation of metastable magic-sized clusters (MSCs) during reaction prevents separation of nucleation and growth stages and hence the synthesis of QD cores with narrow size distribution. The stability of MSCs was reduced by employing additives (i.e., tri-n-octylphosphine and zinc chloride) during the heating-up process, thereby inducing decarboxylation and ligand exchange reactions. The resulting QD cores exhibited a more uniform size distribution, and surface passivation from the additives improved their stability. The final product, In(Zn)P/ZnSe/ZnS QDs displayed a high photoluminescence quantum yield with narrow full-width at half-maximum, which could readily be used in display applications.

Original languageEnglish
Pages (from-to)6161-6167
Number of pages7
JournalChemistry of Materials
Volume35
Issue number15
DOIs
Publication statusPublished - 2023 Aug 8

Bibliographical note

Publisher Copyright:
© 2023 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Materials Chemistry

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