Understanding the local environment of Sm³⁺ in doped SrZrO₃ and energy transfer mechanism using time-resolved luminescence: a combined theoretical and experimental approach

Abstract

A combined experimental and theoretical study on the photoluminescence (PL) properties of strontium zirconate (SZ) and Sm3+ doped SZ nanostructures is presented in this work.

An efficient gel-combustion synthesis of visible light emitting barium zirconate perovskite nanoceramics: Probing the photoluminescence of Sm 3+ and Eu 3+ doped BaZrO 3

“…These results is in concordant with our emission studies where we have observed that majority of Sm 3 þ ions occupying Ba 2 þ site without inversion symmetry. Such site selective luminescence of lanthanide in host such as Sr 2 SiO 4 , Zn 2 P 2 O 7 , SrZrO 3 and Sr 2 CeO 4 where multiple sites are available for occupancy has already been reported by our group [46][47][48]53]. Fig.…”

“…In case of Sm 3 þ ; 4 G 5/2 -6 H 7/2 (ΔJ ¼ 7 1) is a partly magnetic dipole (MD) and partly electric dipole(ED) emission band whereas 4 G 5/2 -6 H 5/2 is purely MD and 4 G 5/2 -6 H 9/2 is purely ED natured [48].The magnetic dipole transition (MDT) 4 G 5/2 -6 H 5/2 does not depend on chemical surroundings of the luminescent centre and its symmetry. However, the hypersensitive 4 G 5/2 -6 H 9/2 transition is magnetic-dipole forbidden and electricdipole allowed and its intensity increases as the environmental symmetry become lower.…”

“…Recently lots of research interests are focused on luminescence studies pertaining to ABO 3 type distorted perovskite oxide like SrTiO 3 [21], PbZrO 3 [22], PbTiO 3 [23], CaTiO 3 [24], MgTiO 3 [25], SrZrO 3 [26][27][28][29] etc. where local defects in the perovskite structure is mostly responsible for photoluminescence in visible region.…”

Exploring pure and RE co-doped (Eu3+, Tb3+ and Dy3+) gadolinium scandate: Luminescence behaviour and dynamics of energy transfer

“…It is probably these defect states or disorders that are instrumental behind this luminescence behaviour exhibited by GdScO 3 . There is a lot of literature on the existence of defect mediated luminescence in perovskite structure like SrTiO 3 [19], PbZrO 3 [20], BaZrO 3 [21], PbTiO 3 [22], CaTiO 3 [23], MgTiO 3 [24], SrZrO 3 [25][26][27] etc. In order to have a better understanding of the PL behaviour exhibited, the PL curves were analysed by PEAKFIT deconvolution.…”

Structural evaluations and temperature dependent photoluminescence characterizations of Eu3+-activated SrZrO3 hollow spheres for luminescence thermometry applications

“…For various optoelectronic applications, alkaline-earth perovskite structured MZrO 3 (M = Sr, Ba, Ca) are attractive candidates because of their high thermal as well as chemical stability and eco friendly nature192021. The displacement of Zr or M atoms in disordered perovskite MZrO 3 may induce some vacancy defects at the axial and planar oxygen sites of the [ZrO 6 ] octahedral19.…”