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Type-II behavior in wurtzite InP/InAs/InP core-multishell nanowires
| Title: | Type-II behavior in wurtzite InP/InAs/InP core-multishell nanowires |
| Authors: | Pal, B. Browse this author | | Goto, K. Browse this author | | Ikezawa, M. Browse this author | | Masumoto, Y. Browse this author | | Mohan, P. Browse this author | | Motohisa, J. Browse this author →KAKEN DB | | Fukui, T. Browse this author |
| Issue Date: | Aug-2008 |
| Publisher: | American Institute of Physics |
| Journal Title: | Applied Physics Letters |
| Volume: | 93 |
| Issue: | 7 |
| Start Page: | 073105 |
| Publisher DOI: | 10.1063/1.2966343 |
| Abstract: | We study optical transitions from a periodic array of InP/InAs/InP core-multishell nanowires (CMNs) having a wurtzite crystal structure by using photoluminescence (PL) and PL excitation (PLE) spectroscopy. Observing a large Stokes shift between PL and PLE spectra, a blueshift of the PL peak with a cube-root dependence on the excitation power and a slow and nonexponential decay of PL with an effective decay time of 16 ns suggest a type-II band alignment. Band-offset calculation based on the "model-solid theory" of Van de Walle [Phys. Rev. B 39, 1871 (1989)] supports type-II band lineup if the InAs layer in the wurtzite CMNs is assumed to sustain compressive strain in all directions. |
| Rights: | Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/35016 |
| Appears in Collections: | 量子集積エレクトロニクス研究センター (Research Center for Integrated Quantum Electronics) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 福井 孝志
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