Probing Quantum Confinement within Single Core鈥揗ultishell Nanowires
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- 作者：Gema Mart铆nez-Criado ; Alejandro Homs ; Benito Al茅n ; Juan A. Sans ; Jaime Segura-Ruiz ; Alejandro Molina-S谩nchez ; Jean Susini ; Jinkyoung Yoo ; Gyu-Chul Yi
- 刊名：Nano Letters
- 出版年：2012
- 出版时间：November 14, 2012
- 年：2012
- 卷：12
- 期：11
- 页码：5829-5834
- 全文大小：444K
- 年卷期：v.12,no.11(November 14, 2012)
- ISSN：1530-6992
文摘
Theoretically core鈥搈ultishell 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.