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arXiv · 2405.13299

Direct evidence for carbon incorporation on the nitrogen site in AlN

Darshana Wickramaratne·Mackenzie Siford·Md Shafiqul Islam Mollik·John L. Lyons·M. E. Zvanut
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Abstract

We use photo-electron paramagnetic resonance (EPR) measurements and first-principles calculations to identify and explain the properties of carbon in AlN. We present clear evidence for carbon substitution on the nitrogen site (C$_{\rm N}$). We also clarify the origin of a widely observed EPR spectra in AlN that, although often attributed to a deep donor defect, we demonstrate is surprisingly due to C$_{\rm N}$. Finally, we show the presence of C$_{\rm N}$ is consistent with the absorption spectra at 4.7 eV observed in AlN.

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Darshana Wickramaratne, Mackenzie Siford, Md Shafiqul Islam Mollik, John L. Lyons, M. E. Zvanut. 2024-05-22. Direct evidence for carbon incorporation on the nitrogen site in AlN. https://arxiv.org/abs/2405.13299

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