title: Al2O3 influence on structural, elastic, thermal properties of Yb(3+) doped Ba-La-tellurite glass: evidence of reduction in self-radiation trapping at 1μm emission.
abstract: Ba-La-tellurite glasses doped with Yb(3+) ions have been prepared through melt quenching technique by modifying their composition with the inclusion of varied concentration of Al2O3 to elucidate its effects on glass structural, elastic, thermal properties and Yb(3+) ion NIR luminescence performance. The FTIR spectral analysis indicates Al2O3 addition is promoting the conversion of BOs from NBOs which have been generated during the process of depolymerisation of main glass forming TeO4 units. The elastic properties of the glass revealed an improved rigidity of the glass network on addition of Al2O3. In concurrence to this, differential thermal analysis showed an increase in glass transition temperature with improved thermal stability factor. Also, Yb(3+) fluorescence dynamics demonstrated that, Al2O3 inclusion helps in restraining the detrimental radiation trapping of ∼1μm emission.
authors: CSIR - Network of Institute for Solar Energy (NISE), Glass Science and Technology Section, CSIR - Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata 700 032, India. Electronic address: sbalaji@cgcri.res.in.
authors: S
authors: S
authors: Balaji
authors: CSIR - Network of Institute for Solar Energy (NISE), Glass Science and Technology Section, CSIR - Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata 700 032, India.
authors: K
authors: K
authors: Biswas
authors: CSIR - Network of Institute for Solar Energy (NISE), Glass Science and Technology Section, CSIR - Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata 700 032, India.
authors: A D
authors: AD
authors: Sontakke
authors: CSIR - Network of Institute for Solar Energy (NISE), Glass Science and Technology Section, CSIR - Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata 700 032, India.
authors: G
authors: G
authors: Gupta
authors: CSIR - Network of Institute for Solar Energy (NISE), Glass Science and Technology Section, CSIR - Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata 700 032, India.
authors: D
authors: D
authors: Ghosh
authors: CSIR - Network of Institute for Solar Energy (NISE), Glass Science and Technology Section, CSIR - Central Glass and Ceramic Research Institute, 196, Raja S.C. Mullick Road, Kolkata 700 032, India. Electronic address: annapurnak@cgcri.res.in.
authors: K
authors: K
authors: Annapurna
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D001464:Barium / Q000737:chemistry*; D004548:Elasticity; D005898:Glass / Q000737:chemistry; D007811:Lanthanum / Q000737:chemistry*; D049449:Luminescence; D011827:Radiation; D013691:Tellurium / Q000737:chemistry*; D013816:Thermodynamics; D044366:Transition Temperature; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D001464:Barium; D007811:Lanthanum; C026660:tellurous acid; D000537:Aluminum Oxide; D015018:Ytterbium; D013691:Tellurium
keywords: Al(2)O(3) effects; Elastic properties; Luminescence; Radiation trapping; Tellurite glass; Yb(3+) ion