Ion track template technique for fabrication of ZnSe2O5 nanocrystals

Abstract

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 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.

Free‐Volume Extended Defects in Structurally Modified Ge–Ga–S/Se Glasses

“…The approach considered in this work can be particularly useful for analyzing extended defect structures formed in the near-surface region of crystalline samples irradiated with fast heavy ions [43][44][45][46][47] or electrochemical etching. [48]…”

Formation of zinc selenite nanostructures in SiO2/Si track templates with the use of two kinds of electrolytes

“…The matrix synthesis was performed according to the method of templating synthesis with the use of two kinds of electrolytes. Synthesis methods are described in [9][10][11], where synthesis modes are described in detail. In our case, new complex crystals based on zinc selenide (ternary compounds) on zinc electrodes at voltages from 1 to 2 V were produced by template-based synthesis.…”

Ion-Track Template Synthesis and Characterization of ZnSeO3 Nanocrystals

“…From the point of view of obtaining new promising materials for optoelectronics, nanoelectronics, and sensorics, a detailed study of nanomaterials based on other complex zinc-based oxides obtained in SiO 2 /Si templates is of undoubted interest. Therefore, a logical continuation of the work in [40,41], where the results of the synthesis of ZnSe 2 O 5 were reported, is the synthesis and characterization of similar but simpler nanocrystals of ZnSeO 3 , also obtained in SiO 2 /Si templates. Note that although in recent years several successful attempts have been made to synthesize various types of thin films and nanostructures based on ZnSeO 3 [61][62][63], this work is the first demonstration of the possibility of their synthesis in SiO 2 /Si templates.…”

“…The PL spectra of ZnSeO3/SiO2/Si present a wide band from 400 to 600 nm, as in the case of ED synthesized ZnSe2O5/SiO2/Si [40]. The luminescence of ZnSe2O3 can be ex- The photoluminescence (PL) spectra were recorded, using an Agilent Technologies spectrofluorimeter (Cary Eclipse Fluorescence Spectrophotometer), in the spectral range from 300 to 800 nm at room temperature at 300 nm excitation.…”