TY - JOUR
T1 - Effect of europium concentration on the photoluminescent and thermoluminescent properties of HfO2:Eu3+ nanocrystals
AU - Montes, Eduardo
AU - Ceron, Pablo
AU - Guzmán-Mendoza, José
AU - Falcony, Ciro
AU - Vallejo, Miguel Angel
AU - Sosa, Modesto Antonio
N1 - Publisher Copyright:
© 2018 Elsevier Ltd and Techna Group S.r.l.
PY - 2018/5
Y1 - 2018/5
N2 - This work is aimed to determine the influence of the europium concentration on the photoluminescent and thermoluminescent properties of the HfO2:Eu3+ synthesized by hydrothermal method. Samples were prepared at Eu3+ contents of 0, 1, 3, 5 and 7 at%. The structural, morphological, photoluminescent and thermoluminescent characteristics of the material, as well as the kinetic parameters of the glow curve when it was exposed to UV radiation at 254 nm are presented. The maximum response for the photoluminescence and thermoluminescence properties, with an integrated signal more than six times greater than the signal obtained for the intrinsic sample, was found for the sample with 5 at% Eu3+. Nanocrystal sizes of 28 nm were obtained for the pure sample and 46 nm for the sample doped with the highest concentration of Eu3+. The microcrystals showed a preferential growth in the (022) direction.
AB - This work is aimed to determine the influence of the europium concentration on the photoluminescent and thermoluminescent properties of the HfO2:Eu3+ synthesized by hydrothermal method. Samples were prepared at Eu3+ contents of 0, 1, 3, 5 and 7 at%. The structural, morphological, photoluminescent and thermoluminescent characteristics of the material, as well as the kinetic parameters of the glow curve when it was exposed to UV radiation at 254 nm are presented. The maximum response for the photoluminescence and thermoluminescence properties, with an integrated signal more than six times greater than the signal obtained for the intrinsic sample, was found for the sample with 5 at% Eu3+. Nanocrystal sizes of 28 nm were obtained for the pure sample and 46 nm for the sample doped with the highest concentration of Eu3+. The microcrystals showed a preferential growth in the (022) direction.
KW - HfO-crystals
KW - Hydrothermal method
KW - Kinetic parameters
KW - UV radiation
UR - http://www.scopus.com/inward/record.url?scp=85041659778&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2018.01.250
DO - 10.1016/j.ceramint.2018.01.250
M3 - Artículo
SN - 0272-8842
VL - 44
SP - 8081
EP - 8086
JO - Ceramics International
JF - Ceramics International
IS - 7
ER -