机构:
Bhabha Atom Res Ctr, TPPED, Crystal Technol Lab, Bombay 400085, Maharashtra, IndiaBhabha Atom Res Ctr, TPPED, Crystal Technol Lab, Bombay 400085, Maharashtra, India
Tyagi, Mohit
[1
]
Sangeeta
论文数: 0引用数: 0
h-index: 0
机构:
Bhabha Atom Res Ctr, TPPED, Crystal Technol Lab, Bombay 400085, Maharashtra, IndiaBhabha Atom Res Ctr, TPPED, Crystal Technol Lab, Bombay 400085, Maharashtra, India
Sangeeta
[1
]
Sabharwal, S. C.
论文数: 0引用数: 0
h-index: 0
机构:
Bhabha Atom Res Ctr, TPPED, Crystal Technol Lab, Bombay 400085, Maharashtra, IndiaBhabha Atom Res Ctr, TPPED, Crystal Technol Lab, Bombay 400085, Maharashtra, India
Sabharwal, S. C.
[1
]
机构:
[1] Bhabha Atom Res Ctr, TPPED, Crystal Technol Lab, Bombay 400085, Maharashtra, India
UV excited photoluminescence from BaWO4 (BWO) single crystals has been investigated in the temperature range of 77-300 K. The presence of two emission bands in the UV and blue spectral regions is observed under excitation by 230 nm at room temperature. The observation of UV emission band at room temperature is a novel result. The thermal treatment at elevated temperatures under air or vacuum is observed to influence the optical and luminescence properties of the crystal. The changes brought about by annealing in air are found to be reversible. However, in vacuum annealed samples the UV. emission is completely quenched. (c) 2008 Elsevier B.V. All rights reserved.