Probing inhomogeneous composition in core/shell nanowires by Raman spectroscopy

被引：4

作者：

Amaduzzi, F. ^{[1
]}

Alarcon-Llado, E. ^{[1
]}

Russo-Averchi, E. ^{[1
]}

Matteini, F. ^{[1
]}

Heiss, M. ^{[1
]}

Tuetuencueoglu, G. ^{[1
]}

Conesa-Boj, S. ^{[1
]}

de la Mata, M. ^{[2
]}

Arbiol, J. ^{[2
,3
]}

Fontcuberta i Morral, A. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Mat Semicond, CH-1015 Lausanne, Switzerland

[2] CSIC, Inst Ciencia Mat Barcelona ICMAB, Bellaterra 08193, Cat, Spain

[3] ICREA, Barcelona 08019, Cat, Spain

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 18期

关键词：

CORE-SHELL NANOWIRES; GAAS NANOWIRES; EPITAXIAL-GROWTH; SOLAR-CELLS; HETEROSTRUCTURES; SILICON; SCATTERING; CATALYST; FABRICATION; PHOTONICS;

D O I：

10.1063/1.4901504

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Due to its non-destructive and its micro-spatial resolution, Raman spectroscopy is a powerful tool for a rapid structural and compositional characterization of nanoscale materials. Here, by combining the compositional dependence of the Raman peaks with the existence of photonic modes in the nanowires, we address the composition inhomogeneities of AlxGa1-xAs/GaAs core/shell structures. The experimental results are validated with complementary chemical composition maps of the nanowire cross-sections and finite-difference time-domain simulations of the photonic modes. (C) 2014 AIP Publishing LLC.

引用

页数：6

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