Air-stable n-type Fe-doped ZnO colloidal nanocrystals

Air-stable n-type Fe-doped ZnO colloidal nanocrystals

The synthesis of Al and Fe codoped ZnO colloidal nanocrystals (NCs) using a modified etching-regrowth-doping method is presented. We show that the spectroscopic signatures associated with Fe3+ in ZnO disappear upon introduction of Al3+ donor defects into the ZnO lattice. The presence of Al3+ is conf...

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Veröffentlicht in:The Journal of chemical physics 2019-10, Vol.151 (13), p.134702-134702
Hauptverfasser: Buz, Enes, Zhou, Dongming, Kittilstved, Kevin R.
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Colloids
Dopants
Doping
Electron paramagnetic resonance
Iron
Magnetic properties
Nanocrystals
Optical properties
Physics
Zinc oxide
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container_title The Journal of chemical physics
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creator Buz, Enes
Zhou, Dongming
Kittilstved, Kevin R.
description The synthesis of Al and Fe codoped ZnO colloidal nanocrystals (NCs) using a modified etching-regrowth-doping method is presented. We show that the spectroscopic signatures associated with Fe3+ in ZnO disappear upon introduction of Al3+ donor defects into the ZnO lattice. The presence of Al3+ is confirmed by the appearance of a localized surface plasmon resonance feature indicating excess free carriers in the codoped NCs. These spectral changes suggest that Al3+ doping results in a reduction of Fe3+ dopants to the electron paramagnetic resonance-silent Fe2+ dopants that are stable under ambient conditions. These colloidal NCs provide a potential building block for manipulating magneto-optical properties and plasmon responses in colloidal NCs and higher-order nanostructures.
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Aluminum
Colloids
Dopants
Doping
Electron paramagnetic resonance
Iron
Magnetic properties
Nanocrystals
Optical properties
Physics
Zinc oxide
title Air-stable n-type Fe-doped ZnO colloidal nanocrystals
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