The synthesis of Au-NPs by ion implantation in the crystalline GaN and characterisation of their optical properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00565828" target="_blank" >RIV/68378271:_____/22:00565828 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/22:00565828
Result on the web
<a href="https://doi.org/10.1051/epjconf/202226101003" target="_blank" >https://doi.org/10.1051/epjconf/202226101003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/202226101003" target="_blank" >10.1051/epjconf/202226101003</a>
Alternative languages
Result language
angličtina
Original language name
The synthesis of Au-NPs by ion implantation in the crystalline GaN and characterisation of their optical properties
Original language description
Nanostructured surfaces with embedded noble metal nanoparticles is an attractive way for manipulation with the optical properties of wide bandgap semiconductors applied in optoelectronics, photocatalytic processes or for Surface-Enhanced Raman spectroscopy. Ion implantation offers an effective way for nanoparticle preparation without the use of additional chemicals that offers precise control of nanoparticle depth distribution. The aim of this study is a synthesis of the gold nanoparticles in GaN by implantation of 1.85 MeV Au ions with high fluences up to 7×1016 cm-2 and study of optical properties of Au implanted GaN. Implanted crystals were annealed at 800 °C in an ammonia atmosphere for 20 min to support Au nanoparticle creation and GaN recovery. The structure characterisation has been realized by Rutherford backscattering spectroscopy in channelling mode and it showed the formation of two separated disordered regions – the surface region and buried layer. The lower implantation fluences induce damage mainly in a buried layer. However, the increase of the Au-ion fluence leads to the increase of surface disorder as well. Further, the increase of the Au-ion fluence induces the Au dopant shift to the surface and multimodal Audepth profiles. TEM analyses confirmed the formation of Au nanoparticles in the implanted samples after annealing with sizes up to 14 nm. The increase of light absorption and modification of GaN bandgap of the Au modified GaN was deduced from the change in optical transmission spectra between 370 – 1400 nm.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
EPJ Web of Conferences
ISBN
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ISSN
2100-014X
e-ISSN
2100-014X
Number of pages
8
Pages from-to
01003
Publisher name
EDP sciences
Place of publication
Les ulis
Event location
Prague
Event date
Sep 12, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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