Fine yttrium oxide powders doped with Yb3+ and co-doped either with Tm3+ or Ho3+ were synthesized via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Synthesized powders were additionally thermally treated at 1100 °C for 24 h. The characterization was done through X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and photoluminescent measurements (PL). Generation of cubic bixbyte-structure with space group Ia-3 is confirmed in all samples. Spherical particles with the mean size of ∼400 nm, generated through volume precipitation of much smaller nanograins, expose certain degree of porosity which alters particle morphology during additional thermal treatment. Powders optical characterizations include measurement of up-conversion emission spectra after excitation at 978 nm, as well as determination of emission lifetimes and up-converted emission intensity dependence on excitation power. Dominant green (5F4, 5S2 → 5I8) and blue (1G4 → 3H6) emission is found for H...o3+ and Tm3+ samples, respectively. The amplified emission intensities and enhanced lifetime in thermally treated samples are correlated with the powders morphological and structural changes.
TY - JOUR
AU - Lojpur, Vesna
AU - Nikolić, M.
AU - Mančić, Lidija
AU - Milošević, Olivera
AU - Dramićanin, Miroslav
PY - 2012
UR - https://dais.sanu.ac.rs/123456789/474
AB - Fine yttrium oxide powders doped with Yb3+ and co-doped either with Tm3+ or Ho3+ were synthesized via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Synthesized powders were additionally thermally treated at 1100 °C for 24 h. The characterization was done through X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and photoluminescent measurements (PL). Generation of cubic bixbyte-structure with space group Ia-3 is confirmed in all samples. Spherical particles with the mean size of ∼400 nm, generated through volume precipitation of much smaller nanograins, expose certain degree of porosity which alters particle morphology during additional thermal treatment. Powders optical characterizations include measurement of up-conversion emission spectra after excitation at 978 nm, as well as determination of emission lifetimes and up-converted emission intensity dependence on excitation power. Dominant green (5F4, 5S2 → 5I8) and blue (1G4 → 3H6) emission is found for Ho3+ and Tm3+ samples, respectively. The amplified emission intensities and enhanced lifetime in thermally treated samples are correlated with the powders morphological and structural changes.
PB - Elsevier
T2 - Optical Materials
T1 - Up-conversion luminescence in Ho3+ and Tm3+ co-doped Y2O3:Yb3+ fine powders obtained through aerosol decomposition
SP - 38
EP - 44
VL - 35
IS - 1
DO - 10.1016/j.optmat.2012.06.019
UR - https://hdl.handle.net/21.15107/rcub_dais_474
ER -
@article{
author = "Lojpur, Vesna and Nikolić, M. and Mančić, Lidija and Milošević, Olivera and Dramićanin, Miroslav",
year = "2012",
abstract = "Fine yttrium oxide powders doped with Yb3+ and co-doped either with Tm3+ or Ho3+ were synthesized via spray pyrolysis at 900 °C using 0.1 M nitrate precursor. Synthesized powders were additionally thermally treated at 1100 °C for 24 h. The characterization was done through X-ray powder diffraction (XRPD), scanning electron microscopy (SEM) and photoluminescent measurements (PL). Generation of cubic bixbyte-structure with space group Ia-3 is confirmed in all samples. Spherical particles with the mean size of ∼400 nm, generated through volume precipitation of much smaller nanograins, expose certain degree of porosity which alters particle morphology during additional thermal treatment. Powders optical characterizations include measurement of up-conversion emission spectra after excitation at 978 nm, as well as determination of emission lifetimes and up-converted emission intensity dependence on excitation power. Dominant green (5F4, 5S2 → 5I8) and blue (1G4 → 3H6) emission is found for Ho3+ and Tm3+ samples, respectively. The amplified emission intensities and enhanced lifetime in thermally treated samples are correlated with the powders morphological and structural changes.",
publisher = "Elsevier",
journal = "Optical Materials",
title = "Up-conversion luminescence in Ho3+ and Tm3+ co-doped Y2O3:Yb3+ fine powders obtained through aerosol decomposition",
pages = "38-44",
volume = "35",
number = "1",
doi = "10.1016/j.optmat.2012.06.019",
url = "https://hdl.handle.net/21.15107/rcub_dais_474"
}
Lojpur, V., Nikolić, M., Mančić, L., Milošević, O.,& Dramićanin, M.. (2012). Up-conversion luminescence in Ho3+ and Tm3+ co-doped Y2O3:Yb3+ fine powders obtained through aerosol decomposition. in Optical Materials
Elsevier., 35(1), 38-44.
https://doi.org/10.1016/j.optmat.2012.06.019
https://hdl.handle.net/21.15107/rcub_dais_474
Lojpur V, Nikolić M, Mančić L, Milošević O, Dramićanin M. Up-conversion luminescence in Ho3+ and Tm3+ co-doped Y2O3:Yb3+ fine powders obtained through aerosol decomposition. in Optical Materials. 2012;35(1):38-44.
doi:10.1016/j.optmat.2012.06.019
https://hdl.handle.net/21.15107/rcub_dais_474 .
Lojpur, Vesna, Nikolić, M., Mančić, Lidija, Milošević, Olivera, Dramićanin, Miroslav, "Up-conversion luminescence in Ho3+ and Tm3+ co-doped Y2O3:Yb3+ fine powders obtained through aerosol decomposition" in Optical Materials, 35, no. 1 (2012):38-44,
https://doi.org/10.1016/j.optmat.2012.06.019 .,
https://hdl.handle.net/21.15107/rcub_dais_474 .
