TY - JOUR
T1 - Effect of TiO 2 on the thermal and optical properties of Er 3+ /Yb 3+ co-doped tellurite glasses for optical sensor
AU - Leal, J. J.
AU - Narro-García, R.
AU - Flores-De los Ríos, J. P.
AU - Gutierrez-Mendez, N.
AU - Ramos-Sánchez, Víctor H.
AU - González-Castillo, J. R.
AU - Rodríguez, E.
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/4
Y1 - 2019/4
N2 - Er 3+ /Yb 3+ co-doped tellurite glasses (83-x)TeO 2 –10Nb 2 O 5 –5Al 2 O 3 –xTiO 2 –1Er 2 O 3 –1Yb 2 O 3 where x=0, 2.5, 5, 7.5 and 10 mol% were fabricated by the conventional melt quenching technique. The structural, thermal and optical properties of the tellurite glasses were studied in dependence of the TiO 2 concentration. All samples exhibit an amorphous structure which was modified by the introduction of TiO 2 according to the X-Ray Diffraction (XRD) and Raman spectroscopy results. Differential scanning calorimetry (DSC) shows that the glass transition temperature and thermal stability increases with the addition of TiO 2 . The highest value of glass transition temperature (T g ) was 722 K which is one of the highest values found in the literature. On the other hand, the thermometric properties of two representative samples were studied by the fluorescence intensity ratio (FIR) technique. The maximum sensor sensitivity was 4.48 x 10 – 3 *K – 1 at the 490 K temperature for sample with 5 mol% of TiO 2 and 5.94 x 10 – 3 *K – 1 at the 480 K temperature for sample with 7.5 mol% of TiO 2 corresponding to 32% increase in the maximum sensor sensitivity by increasing TiO 2 concentration. These results suggest that the presented host matrix is a good candidate for high temperature sensing applications.
AB - Er 3+ /Yb 3+ co-doped tellurite glasses (83-x)TeO 2 –10Nb 2 O 5 –5Al 2 O 3 –xTiO 2 –1Er 2 O 3 –1Yb 2 O 3 where x=0, 2.5, 5, 7.5 and 10 mol% were fabricated by the conventional melt quenching technique. The structural, thermal and optical properties of the tellurite glasses were studied in dependence of the TiO 2 concentration. All samples exhibit an amorphous structure which was modified by the introduction of TiO 2 according to the X-Ray Diffraction (XRD) and Raman spectroscopy results. Differential scanning calorimetry (DSC) shows that the glass transition temperature and thermal stability increases with the addition of TiO 2 . The highest value of glass transition temperature (T g ) was 722 K which is one of the highest values found in the literature. On the other hand, the thermometric properties of two representative samples were studied by the fluorescence intensity ratio (FIR) technique. The maximum sensor sensitivity was 4.48 x 10 – 3 *K – 1 at the 490 K temperature for sample with 5 mol% of TiO 2 and 5.94 x 10 – 3 *K – 1 at the 480 K temperature for sample with 7.5 mol% of TiO 2 corresponding to 32% increase in the maximum sensor sensitivity by increasing TiO 2 concentration. These results suggest that the presented host matrix is a good candidate for high temperature sensing applications.
KW - Optical sensor
KW - Tellurite glasses
KW - Thermal properties
UR - http://www.scopus.com/inward/record.url?scp=85059822747&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2019.01.004
DO - 10.1016/j.jlumin.2019.01.004
M3 - Artículo
AN - SCOPUS:85059822747
SN - 0022-2313
VL - 208
SP - 342
EP - 349
JO - Journal of Luminescence
JF - Journal of Luminescence
ER -