Abstract
This work is extremely important not only from nuclear technology and phosphor industry perspective but equally important for understanding fundamental materials aspects of actinide doped perovskite. In this work we have synthesized both SrHfO3 (SHO) and SrHfO3:U (SHOU) perovskite. SHO demonstrated oxygen vacancy induced visible photoluminescence on UV irradiation. Uranium ion stabilizes as UO22+ ion in SrHfO3 perovskite which resulted in the formation of abundance of strontium vacancies. Such defects act as a trap centre and leads to intense thermoluminescent peaks in SHOU. Lifetime Spectroscopy suggested the distribution of UO22+ ion at both SrO8 and HfO6 polyhedra with predominant occupancy at former. Here in this work a very challenging aspect of actinide doping in perovskite is probed with intention to understand the formation of defect, its local structure and luminescence properties.
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