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| 001 | 203137 | ||
| 005 | 20210129220306.0 | ||
| 024 | 7 | _ | |a 10.1063/1.3530634 |2 doi |
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| 100 | 1 | _ | |a Limbach, F. |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Structural and optical properties of InGaN–GaN nanowire heterostructures grown by molecular beam epitaxy |
| 260 | _ | _ | |a Melville, NY |c 2011 |b American Inst. of Physics |
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| 520 | _ | _ | |a InGaN/GaN nanowire (NW) heterostructures grown by plasma assisted molecular beam epitaxy were studied in comparison to their GaN and InGaN counterparts. The InGaN/GaN heterostructure NWs are composed of a GaN NW, a thin InGaN shell, and a multifaceted InGaN cap wrapping the top part of the GaN NW. High-resolution transmission electron microscopy (HRTEM) images taken from different parts of a InGaN/GaN NW show a wurtzite structure of the GaN core and the epitaxial InGaN shell around it, while additional crystallographic domains are observed whithin the InGaN cap region. Large changes in the lattice parameter along the wire, from pure GaN to higher In concentration demonstrate the successful growth of a complex InGaN/GaN NW heterostructure. Photoluminescence (PL) spectra of these heterostructure NW ensembles show rather broad and intense emission peak at 2.1 eV. However, μ-PL spectra measured on single NWs reveal a reduced broadening of the visible luminescence. The analysis of the longitudinal optical phonon Raman peak position and its shape reveal a variation in the In content between 20% and 30%, in agreement with the values estimated by PL and HRTEM investigations. The reported studies are important for understanding of the growth and properties of NW heterostructures suitable for applications in optoelectronics and photovoltaics. |
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| 773 | _ | _ | |a 10.1063/1.3530634 |g Vol. 109, no. 1, p. 014309 - |0 PERI:(DE-600)1476463-5 |n 1 |p 014309 - |t Journal of applied physics |v 109 |y 2011 |x 0021-8979 |
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