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Electron trapping on Fe sites in photodoped ZnO colloidal nanocrystals

Chemical Communications, ISSN: 1364-548X, Vol: 52, Issue: 58, Page: 9101-9104
2016
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Article Description

The effects of photodoping on the electronic structure of Fe-doped ZnO colloidal nanocrystals are presented. We observe disappearance of the spectroscopic signatures attributed to both substitutional Fe and interstitial Fe in the ZnO host as a function of photodoping time, which precede the appearance of the well-known localized surface plasmon resonance from conduction band electrons in ZnO nanocrystals. These results suggest that the oxidation state of Fe defects can be reversibly switched in ZnO nanocrystals.

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