Ion track template technique for fabrication of ZnSe2O5 nanocrystals

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:476

Article

Akilbekov, A.¹  Akylbekova, A.¹  Usseinov, A.¹  Kozlovskyi, A.^1,2  Baymukhanov, Z.¹  Giniyatova, Sh¹  Popov, A., I³  Dauletbekova, A.¹ 

[1] LN Gumilyov Eurasian Natl Univ, Nur Sultan, Kazakhstan

[2] Inst Nucl Phys, Nur Sultan, Kazakhstan

[3] Univ Latvia, Inst Solid State Phys, Riga, Latvia

关键词: Ion track;    ZnSe2O5;    Track template;    Luminescence;    Ab initio;   

DOI  :  10.1016/j.nimb.2020.04.039

来源: Elsevier

【 摘 要 】

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 10(7) ions/cm(2). 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 G-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.

【 授权许可】

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