TY  - JOUR
AU  - Mitrić, Jelena
AU  - Paunović, Novica M.
AU  - Mitrić, Miodrag
AU  - Ćirković, Jovana
AU  - Gilić, Martina D.
AU  - Romčević, Maja J.
AU  - Romčević, Nebojša Ž.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9904
AB  - In this paper two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top – down approach) and Solution Combustion Synthesis (bottom – up approach). For starting structural characterization, X – Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV–Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far – Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi – phonon processes which alter the reflection spectra of bulk YVO4. The influence of Eu ions is reflected through multi – phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.
T2  - Physica E: Low-dimensional Systems and Nanostructures
T1  - Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders
VL  - 134
SP  - 114923
DO  - 10.1016/j.physe.2021.114923
ER  - 

@article{
author = "Mitrić, Jelena and Paunović, Novica M. and Mitrić, Miodrag and Ćirković, Jovana and Gilić, Martina D. and Romčević, Maja J. and Romčević, Nebojša Ž.",
year = "2021",
abstract = "In this paper two methods of preparation of yttrium orthovanadate nanopowders were presented: Solid State Reaction (top – down approach) and Solution Combustion Synthesis (bottom – up approach). For starting structural characterization, X – Ray Powder Diffraction (XPRD) and Field Emission Scanning Electron Microscopy (FESEM) were used. We report the change in reflection spectra in europium doped YVO4 nanopowders with comparison to its bulk analog. In UV–Vis reflection spectra we consider the change in values of band gap in these structures, after resizing it from bulk to nanomaterial. In Far – Infrared (FIR) reflection spectra, we registered the existence of Surface Optical Phonon (SOP) and different multi – phonon processes which alter the reflection spectra of bulk YVO4. The influence of Eu ions is reflected through multi – phonon processes that occur and are connected with energy transfer from YVO4 lattice to Eu ions. All IR spectra were modeled using classical oscillator model with Drude part added which takes into account the free carrier contribution. Since our samples are distinctively inhomogeneous materials, we use Effective Medium theory in Maxwell Garnett approximation to model its effective dieletric function.",
journal = "Physica E: Low-dimensional Systems and Nanostructures",
title = "Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders",
volume = "134",
pages = "114923",
doi = "10.1016/j.physe.2021.114923"
}

Mitrić, J., Paunović, N. M., Mitrić, M., Ćirković, J., Gilić, M. D., Romčević, M. J.,& Romčević, N. Ž.. (2021). Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders. in Physica E: Low-dimensional Systems and Nanostructures, 134, 114923.
https://doi.org/10.1016/j.physe.2021.114923

Mitrić J, Paunović NM, Mitrić M, Ćirković J, Gilić MD, Romčević MJ, Romčević NŽ. Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders. in Physica E: Low-dimensional Systems and Nanostructures. 2021;134:114923.
doi:10.1016/j.physe.2021.114923 .

Mitrić, Jelena, Paunović, Novica M., Mitrić, Miodrag, Ćirković, Jovana, Gilić, Martina D., Romčević, Maja J., Romčević, Nebojša Ž., "Surface optical phonon and multi – phonon transitions in YVO4:Eu3+ nanopowders" in Physica E: Low-dimensional Systems and Nanostructures, 134 (2021):114923,
https://doi.org/10.1016/j.physe.2021.114923 . .

TY  - CONF
AU  - Gilić, Martina
AU  - Ćurčić, Milica
AU  - Ćirković, Jovana
AU  - Ralević, Uroš
AU  - Mitrić, Miodrag
AU  - Barudžija, Tanja
AU  - Savić-Šević, Svetlana
AU  - Romčević, Nebojša Ž.
AU  - Yahia, Ibrahim
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10888
AB  - Thin films of Se-CuSe2  of three different thicknesses have been prepared by vacuum evaporation method on a glass substrate at room temperature. Surface morphology was investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The structural characterization of thin film was investigated using Xray diffraction pattern (XRD). The presence of twophase system is observed. One is the solid solution of Cu in Se and the other is lowpressure modification of CuSe2 . The optical properties of the films were investigated by photoluminescence spectroscopy and UV-VIS spectroscopy. CuSe2  exhibits both direct and indirect transitions. According to UV-VIS measurements, the band gap for direct transition is found to be in the range of 2.72–2.75 eV and that for indirect transition is in the range of 1.71–1.75 eV. On the other hand, selenium exhibits direct band gap in the range 2.33-2.36 eV. All estimated band gaps slightly decrease with the increase of the film thickness. Photoluminescence spectra of thin films show emission peaks at about 1.6 and 2.3 eV nm at room temperature, with no observed shift with decreasing temperature. A model is proposed for explaining such anomaly
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade
T1  - Optical and structural characterization of Se – CuSe2  thin films
SP  - 65
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10888
ER  - 

@conference{
author = "Gilić, Martina and Ćurčić, Milica and Ćirković, Jovana and Ralević, Uroš and Mitrić, Miodrag and Barudžija, Tanja and Savić-Šević, Svetlana and Romčević, Nebojša Ž. and Yahia, Ibrahim",
year = "2017",
abstract = "Thin films of Se-CuSe2  of three different thicknesses have been prepared by vacuum evaporation method on a glass substrate at room temperature. Surface morphology was investigated by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The structural characterization of thin film was investigated using Xray diffraction pattern (XRD). The presence of twophase system is observed. One is the solid solution of Cu in Se and the other is lowpressure modification of CuSe2 . The optical properties of the films were investigated by photoluminescence spectroscopy and UV-VIS spectroscopy. CuSe2  exhibits both direct and indirect transitions. According to UV-VIS measurements, the band gap for direct transition is found to be in the range of 2.72–2.75 eV and that for indirect transition is in the range of 1.71–1.75 eV. On the other hand, selenium exhibits direct band gap in the range 2.33-2.36 eV. All estimated band gaps slightly decrease with the increase of the film thickness. Photoluminescence spectra of thin films show emission peaks at about 1.6 and 2.3 eV nm at room temperature, with no observed shift with decreasing temperature. A model is proposed for explaining such anomaly",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade",
title = "Optical and structural characterization of Se – CuSe2  thin films",
pages = "65",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10888"
}

Gilić, M., Ćurčić, M., Ćirković, J., Ralević, U., Mitrić, M., Barudžija, T., Savić-Šević, S., Romčević, N. Ž.,& Yahia, I.. (2017). Optical and structural characterization of Se – CuSe2  thin films. in Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade
Belgrade : Serbian Ceramic Society., 65.
https://hdl.handle.net/21.15107/rcub_vinar_10888

Gilić M, Ćurčić M, Ćirković J, Ralević U, Mitrić M, Barudžija T, Savić-Šević S, Romčević NŽ, Yahia I. Optical and structural characterization of Se – CuSe2  thin films. in Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade. 2017;:65.
https://hdl.handle.net/21.15107/rcub_vinar_10888 .

Gilić, Martina, Ćurčić, Milica, Ćirković, Jovana, Ralević, Uroš, Mitrić, Miodrag, Barudžija, Tanja, Savić-Šević, Svetlana, Romčević, Nebojša Ž., Yahia, Ibrahim, "Optical and structural characterization of Se – CuSe2  thin films" in Advanced Ceramics and Application : 5th Serbian Ceramic Society Conference : program and the book of abstracts; September 21-23, 2016; Belgrade (2017):65,
https://hdl.handle.net/21.15107/rcub_vinar_10888 .