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Photoluminescence polarization in strained GaN/AlGaN core/shell nanowires.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jacopin, Gwénolé Rigutti, Lorenzo Bellei, Sara Lavenus, Pierre Julien, François Henri Davydov, Albert V. Tsvetkov, Denis V. Bertness, K. A. Sanford, Norman A. Schlager, John B. Tchernycheva, Maria |
| Copyright Year | 2012 |
| Abstract | The optical polarization properties of GaN/AlGaN core/shell nanowire (NW) heterostructures have been investigated using polarization resolved micro-photoluminescence (μ-PL) and interpreted in terms of a strain-dependent 6 × 6 k·p theoretical model. The NW heterostructures were fabricated in two steps: the Si-doped n-type c-axis GaN NW cores were grown by molecular beam epitaxy (MBE) and then epitaxially overgrown using halide vapor phase epitaxy (HVPE) to form Mg-doped AlGaN shells. The emission of the uncoated strain-free GaN NW core is found to be polarized perpendicular to the c-axis, while the GaN core compressively strained by the AlGaN shell exhibits a polarization parallel to the NW c-axis. The luminescence of the AlGaN shell is weakly polarized perpendicular to the c-axis due to the tensile axial strain in the shell. |
| Starting Page | 325701 |
| Ending Page | 325701 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1088/0957-4484/23/32/325701 |
| PubMed reference number | 22802219 |
| Journal | Medline |
| Volume Number | 23 |
| Issue Number | 32 |
| Alternate Webpage(s) | http://www.ctcms.nist.gov/~davydov/12Jaco_core-shell%20GaN%20PL_Nanotechn_23_325701.pdf |
| Alternate Webpage(s) | https://doi.org/10.1088/0957-4484%2F23%2F32%2F325701 |
| Journal | Nanotechnology |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
