Effect of Plasmonic Ag Nanoparticles on Emission Properties of Planar GaN Nanowires

被引：3
|
作者：
Pozina, Galia [1 ]
Hemmingsson, Carl [1 ]
Abrikossova, Natalia [1 ]
Girshova, Elizaveta I. [2 ]
Lahderanta, Erkki [2 ]
Kaliteevski, Mikhail A. [3 ]
机构：
[1] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden
[2] LUT Univ, Dept Phys, Lappeenranta 53850, Finland
[3] Univ Manchester, Natl Graphene Inst, Manchester M13 9PL, England
来源：
NANOMATERIALS | 2023年 / 13卷 / 08期
基金：
瑞典研究理事会;
关键词：
GaN planar nanowires; plasmonic silver nanoparticles; photoluminescence; Frohlich resonance; ENHANCED RAMAN-SCATTERING; NANOSTRUCTURES; RESONANCE; EXCITON;
D O I：
10.3390/nano13081421
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The combination of plasmonic nanoparticles and semiconductor substrates changes the properties of hybrid structures that can be used for various applications in optoelectronics, photonics, and sensing. Structures formed by colloidal Ag nanoparticles (NPs) with a size of 60 nm and planar GaN nanowires (NWs) have been studied by optical spectroscopy. GaN NWs have been grown using selective-area metalorganic vapor phase epitaxy. A modification of the emission spectra of hybrid structures has been observed. In the vicinity of the Ag NPs, a new emission line appears at 3.36 eV. To explain the experimental results, a model considering the Frohlich resonance approximation is suggested. The effective medium approach is used to describe the enhancement of emission features near the GaN band gap.
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页数：10
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