Quantum confinement effect in ZnO/Mg0.2Zn0.8O multishell nanorod heterostructures

Eue Soon Jang, Jun Young Bae, Jinkyoung Yoo, Won Il Park, Dong Wook Kim, Gyu Chul Yi, T. Yatsui, M. Ohtsu

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We report on photoluminescence measurements of Mg0.2 Zn0.8 OZnO Mg0.2 Zn0. 8 O multishell layers on ZnO core nanorods. Dominant excitonic emissions in the photoluminescence spectra show a blueshift depending on the ZnO shell layer thickness attributed to the quantum confinement effect in the nanorod heterostructure radial direction. Furthermore, near-field scanning optical microscopy clearly shows sharp photoluminescence peaks from the individual nanorod quantum structures, corresponding to subband levels.

Original languageEnglish
Article number023102
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number2
StatePublished - 2006

Bibliographical note

Funding Information:
This work was financially supported through the National Creative Research Initiative Project by the KOSEF and the Air Force Office of Scientific Research (FA5209-04-P-0325), USA.


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