Direct imaging of phase separation in ZnCdO layers

A direct correlation of structural and optical properties of MOCVD-grown ZnCdO-layers with a systematic variation of Cd-content has been achieved on a microscopic scale using highly spatially and spectrally resolved cathodoluminescence. The ZnCdO layer luminescence measured in cathodoluminescence wa...

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Bibliographic Details
Published in:Applied physics letters 2006-02, Vol.88 (6), p.061915-061915-3
Main Authors: Bertram, F., Giemsch, S., Forster, D., Christen, J., Kling, R., Kirchner, C., Waag, A.
Format: Article
Language:English
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Summary:A direct correlation of structural and optical properties of MOCVD-grown ZnCdO-layers with a systematic variation of Cd-content has been achieved on a microscopic scale using highly spatially and spectrally resolved cathodoluminescence. The ZnCdO layer luminescence measured in cathodoluminescence wavelength images reveals strong lateral fluctuations directly visualizing local band gap fluctuation as a consequence of different local Cd incorporation. We give direct evidence for a chemical phase separation into Cd-rich and Cd-poor nanodomains in ZnCdO.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2172146