Probing quantum confinement within single core-multishell nanowires
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 luminesc...
| Autores: | , , , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/62295 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/62295 |
| Access Level: | acceso abierto |
| Palavra-chave: | X-ray nanoprobe Carrier localization Hard X ray Multiquantum wells Optoelectronic nanodevices Underlying mechanism X ray fluorescence spectroscopy Xray imaging Gallium nitride Light emitting diodes Nanostructured materials Optical microscopy |
| Resumo: | 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. © 2012 American Chemical Society. |
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