Ion track template technique for fabrication of ZnSe2O5 nanocrystals
| Autor: | Anatoli I. Popov, Z. Baymukhanov, A. Kozlovskyi, A. Akylbekova, A. B. Usseinov, Sh. Giniyatova, Alma Dauletbekova, Abdirash Akilbekov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Nuclear and High Energy Physics
Luminescence Photoluminescence Materials science Physics::Optics 02 engineering and technology 01 natural sciences Molecular physics Fluence Ion Ion track Condensed Matter::Materials Science 0103 physical sciences NATURAL SCIENCES:Physics [Research Subject Categories] Instrumentation 010302 applied physics 021001 nanoscience & nanotechnology ZnSe2O5 Track template Excited state Ab initio Direct and indirect band gaps Orthorhombic crystal system 0210 nano-technology |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2020.04.039 |
| Popis: | The work was performed under the grant of the Ministry of Education and Science of the Republic of Kazakhstan AP05134367 and Latvian grant lzp ZnSe2O5 nanocrystals with an orthorhombic structure were synthesized by electrochemical deposition into a-SiO2/n-Si ion track template formed by 200 MeV Xe ion irradiation with the fluence of 107 ions/cm2. The lattice parameters determined by the X-ray diffraction and calculated by the CRYSTAL computer program package are very close to each other. It was shown that ZnSe2O5 has a direct band gap of 2.8 eV at the Γ-point. In addition, the calculated charge distribution and chemical bonds show that the crystal has an ion-covalent nature. The photoluminescence excited by photons at 300 nm has a low intensity arising mainly due to zinc and oxygen vacancies. Ministry of Education and Science of the Republic of Kazakhstan AP05134367; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART² |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect