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arXiv · 1310.0271

Probing quantum confinement within single core-multishell nanowires

Gema Martínez-Criado·Alejandro Homs·Benito Alén·Juan A. Sans·Jaime Segura-Ruiz·Alejandro Molina-Sánchez·Jean Susini·Jinkyoung Yoo·Gyu-Chul Yi
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Abstract

Theoretically core-multishell nanowires under a cross-section of hexagonal geometry should exhibit peculiar confinement effects. Using a hard X-ray nanobeam, here we show experimental evidence for carrier localization phenomena at the hexagon corners by combining synchrotron excited optical luminescence with simultaneous X-ray fluorescence spectroscopy. Applied to single coaxial n-GaN/InGaN multiquantum-well/p-GaN nanowires, our experiment narrows the gap between optical microscopy and high-resolution X-ray imaging, and calls for further studies on the underlying mechanisms of optoelectronic nanodevices.

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Gema Martínez-Criado, Alejandro Homs, Benito Alén, Juan A. Sans, Jaime Segura-Ruiz, Alejandro Molina-Sánchez, Jean Susini, Jinkyoung Yoo, Gyu-Chul Yi. 2013-10-01. Probing quantum confinement within single core-multishell nanowires. https://doi.org/10.1021/nl303178u

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