Effects of swift heavy ion irradiation on the InAs and Zn-based nanoparticles ion-beam synthesized in silica

被引：3
|
作者：
Vlasukova, L. [1 ]
Komarov, F. [2 ]
Makhavikou, M. [2 ]
van Vuuren, A. [3 ]
Skuratov, V [4 ]
Dauletbekova, A. [5 ]
Neethling, J. [3 ]
Wendler, E. [6 ]
Zuk, J. [7 ]
Parkhomenko, I [1 ]
Milchanin, O. [2 ]
机构：
[1] Belarusian State Univ, Nezavisimosty Ave 4, Minsk 220030, BELARUS
[2] AN Sevchenko Inst Appl Phys Problems, Kurchatova Str 7, Minsk 220045, BELARUS
[3] Nelson Mandela Univ, Ctr High Resolut Transmiss Electron Microscopy, Bldg 124,Bushbuck Rd,South Campus, ZA-6001 Port Elizabeth, South Africa
[4] Joint Inst Nucl Res, Flerov Lab Nucl React, Dubna 141980, Russia
[5] LN Gumilyov Eurasian Natl Univ, Munaitpasov Str 5, Astana 010008, Kazakhstan
[6] Friedrich Schiller Univ Jena, Max Wien Pl 1, D-07743 Jena, Germany
[7] Marie Curie Sklodowska Univ, Pl M Curie Sklodowskiej 1, PL-20031 Lublin, Poland
来源：
VACUUM | 2023年 / 208卷
关键词：
SiO2; InAs nanocrystals; Zn-based nanoparticles; Swift heavy ions; Ion-shaping; sputtering; NANOCRYSTALS; SHAPE; PHOTOLUMINESCENCE; SIO2-FILMS; CENTERS;
D O I：
10.1016/j.vacuum.2022.111697
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Till now, a shape elongation effect under swift heavy ions (SHI) irradiation was observed predominantly for metal nanoparticles (NPs). We report this effect for InAs and Zn(core)/ZnO(shell) NPs embedded in silica matrix. In case of InAs NPs, SHI irradiation results in the formation of nanorods. A diversity of elongated features is observed for Zn-based NPs: chains of small ZnO clusters, elongated (Zn)core/(ZnO)shell structures and drop-like elongated Zn particles. The intense silica sputtering due to electronic excitations has been found for the "SiO2 + Zn-based NPs" composite. Photoluminescence (PL) spectroscopy reveals an emission in the visible range for both nanocomposites before SHI irradiation. This emission is attributed to the oxygen excess-related defect (NBOHC) as well as to the oxygen deficiency-related centres created in silica matrix during the implantation of clusterforming ions (In + As or Zn). An intensive band in the spectral region of 2.8-3.1 eV is observed in PL spectrum of annealed "SiO2 + InAs NPs" composite. SHI irradiation results in its quenching and formation of an asymmetrical band centred at 1.9 eV. In case of "SiO2 + Zn-based NPs", SHIs irradiation results in substantial increase of PL in orange spectral range.
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页数：8
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