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Highly luminescent (Zn,Cd)Te/CdSe colloidal heteronanowires with tunable electron-hole overlap.

Authors
  • Groeneveld, Esther
  • van Berkum, Susanne
  • van Schooneveld, Matti M
  • Gloter, Alexandre
  • Meeldijk, Johannes D
  • van den Heuvel, Dave J
  • Gerritsen, Hans C
  • de Mello Donega, Celso
Type
Published Article
Journal
Nano Letters
Publisher
American Chemical Society
Publication Date
Feb 08, 2012
Volume
12
Issue
2
Pages
749–757
Identifiers
DOI: 10.1021/nl203695m
PMID: 22214477
Source
Medline
License
Unknown

Abstract

We report the synthesis of ultranarrow (Zn,Cd)Te/CdSe colloidal heteronanowires, using ZnTe magic size clusters as seeds. The wire formation starts with a partial Zn for Cd cation exchange, followed by self-organization into segmented heteronanowires. Further growth occurs by inclusion of CdSe. The heteronanowires emit in the 530 to 760 nm range with high quantum yields. The electron-hole overlap decreases with increasing CdSe volume fraction, allowing the optical properties to be controlled by adjusting the heteronanowire composition.

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