Mechanical activation was used as a method for modification of the structural and optical properties of commercial ZnO powder. For this purpose zinc oxide powder was mechanically treated by grinding in a high-energy vibro-mill in a continual regime in air up to 300 minutes. Starting and modified ZnO samples were characterized using XRD, BET and TEM measurements. Optical properties of these samples were investigated by Raman and photoluminescence (PL) spectroscopy. The color of commercial ZnO powder was white while mechanically activated ZnO powder was dark yellow, indicating the presence of nonstoichiometry. In the Raman spectra of non-activated sample Raman modes of bulk ZnO were observed, while the spectra of modified samples point out structural and stoichiometric changes. The PL spectra of modified samples excited by 325 and 442 nm lines of a He-Cd laser show great difference with respect to the spectra of the original sample. This study confirms that change in the defect structure... of the ZnO crystal lattice introduced by mechanical activation affects the optical properties of this material.
TY - JOUR
AU - Šćepanović, Maja
AU - Srećković, Tatjana
AU - Vojisavljević, Katarina
AU - Ristic, M. M.
PY - 2006
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/170
AB - Mechanical activation was used as a method for modification of the structural and optical properties of commercial ZnO powder. For this purpose zinc oxide powder was mechanically treated by grinding in a high-energy vibro-mill in a continual regime in air up to 300 minutes. Starting and modified ZnO samples were characterized using XRD, BET and TEM measurements. Optical properties of these samples were investigated by Raman and photoluminescence (PL) spectroscopy. The color of commercial ZnO powder was white while mechanically activated ZnO powder was dark yellow, indicating the presence of nonstoichiometry. In the Raman spectra of non-activated sample Raman modes of bulk ZnO were observed, while the spectra of modified samples point out structural and stoichiometric changes. The PL spectra of modified samples excited by 325 and 442 nm lines of a He-Cd laser show great difference with respect to the spectra of the original sample. This study confirms that change in the defect structure of the ZnO crystal lattice introduced by mechanical activation affects the optical properties of this material.
PB - Međunarodni Institut za nauku o sinterovanju, Beograd
T2 - Science of Sintering
T1 - Modification of the structural and optical properties of commercial ZnO powder by mechanical activation
EP - 175
IS - 2
SP - 169
VL - 38
DO - 10.2298/SOS0602169S
ER -
@article{
author = "Šćepanović, Maja and Srećković, Tatjana and Vojisavljević, Katarina and Ristic, M. M.",
year = "2006",
abstract = "Mechanical activation was used as a method for modification of the structural and optical properties of commercial ZnO powder. For this purpose zinc oxide powder was mechanically treated by grinding in a high-energy vibro-mill in a continual regime in air up to 300 minutes. Starting and modified ZnO samples were characterized using XRD, BET and TEM measurements. Optical properties of these samples were investigated by Raman and photoluminescence (PL) spectroscopy. The color of commercial ZnO powder was white while mechanically activated ZnO powder was dark yellow, indicating the presence of nonstoichiometry. In the Raman spectra of non-activated sample Raman modes of bulk ZnO were observed, while the spectra of modified samples point out structural and stoichiometric changes. The PL spectra of modified samples excited by 325 and 442 nm lines of a He-Cd laser show great difference with respect to the spectra of the original sample. This study confirms that change in the defect structure of the ZnO crystal lattice introduced by mechanical activation affects the optical properties of this material.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Modification of the structural and optical properties of commercial ZnO powder by mechanical activation",
pages = "175-169",
number = "2",
volume = "38",
doi = "10.2298/SOS0602169S"
}
Šćepanović, M., Srećković, T., Vojisavljević, K.,& Ristic, M. M.. (2006). Modification of the structural and optical properties of commercial ZnO powder by mechanical activation. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 38(2), 169-175.
https://doi.org/10.2298/SOS0602169S
Šćepanović M, Srećković T, Vojisavljević K, Ristic MM. Modification of the structural and optical properties of commercial ZnO powder by mechanical activation. in Science of Sintering. 2006;38(2):169-175.
doi:10.2298/SOS0602169S .
Šćepanović, Maja, Srećković, Tatjana, Vojisavljević, Katarina, Ristic, M. M., "Modification of the structural and optical properties of commercial ZnO powder by mechanical activation" in Science of Sintering, 38, no. 2 (2006):169-175,
https://doi.org/10.2298/SOS0602169S . .
