Synthesis and Properties of Water-Soluble Blue-Emitting Mn-Alloyed CdTe Quantum Dots

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Olena Tynkevych
  • Volodymyr Karavan
  • Igor Vorona
  • Svitlana Filonenko
  • Yuriy Khalavka

Research units

  • Chernovtsy National University
  • The Scientific Center of Preventive Toxicology
  • National Academy of Sciences in Ukraine

Abstract

In this work, we prepared CdTe quantum dots, and series of Cd1-xMnxTe-alloyed quantum dots with narrow size distribution by an ion-exchange reaction in water solution. We found that the photoluminescence peaks are shifted to higher energies with the increasing Mn2+ content. So far, this is the first report of blue-emitting CdTe-based quantum dots. By means of cyclic voltammetry, we detected features of electrochemical activity of manganese energy levels formed inside the Cd1-xMnxTe-alloyed quantum dot band gap. This allowed us to estimate their energy position. We also demonstrate paramagnetic behavior for Cd1-xMnxTe-alloyed quantum dots which confirmed the successful ion-exchange reaction.

Details

Original languageEnglish
Article number132
Pages (from-to)1-6
JournalNanoscale Research Letters
Volume13
Publication statusPublished - 1 Jan 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • Alloying, Cadmium telluride, Manganese, Quantum dots, Thioglycolic acid

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