Optical characteristics of CdSe quantum dots depending on growth conditions and surface passivation

Soon Ii Jung, Hyun Young Yeo, Ilgu Yun, Sung M. Cho, Ii Ki Han, Joo In Lee

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We investigated the effects of different growth conditions and surface passivation on the growth of CdSe quantum dots (QDs). The synthesis of CdSe QDs by pyrolysis of organometallic reagents was performed by using the hot-matrix method. In order to modify the size and quality of CdSe QDs, we controlled the growth temperature from 250 °C to 350 °C and the relative amount of trioctylphosphin (as the ligand of the Cd and Se precursors) to be injected into the coordinating solvent trioctylphosphineoxide. Moreover, an effective surface passivation of mono-disperse CdSe QDs was achieved by overcoating them with a larger band gap material, such as ZnS.

Original languageEnglish
Pages (from-to)4899-4902
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number9
DOIs
Publication statusPublished - 2008 Sep

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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