STRUCTURAL AND PHOTOLUMINESCENCE PROPERTIES OF Dy3+ ION IN ZINC BISMUTH BORATE GLASSES
Keywords:
Structural, photoluminescence, dysprosium, glassAbstract
The zinc bismuth borate (ZBB) glasses doped with Dy3+ were prepared by the meltquenching technique and their structural and spectroscopic behavior were studied throughXRD, FTIR and photoluminescence measurements. Glasses of chemical composition (inmol%) were 59B2O3: 30Bi2O3: 10ZnO: 1Dy2O3. X-ray diffraction studies were performed in order to confirm the amorphous nature of the sample. The analysis of FTIR spectrum of the sample depicts that the glass network is built up of mainly BiO3, BO3 andBO4 units. Its detailed analysis also revealed that the glass structure depends upon the amount of ZBB in the glass matrix and hence it acts as a modifier in the glass network. The excitation spectrum registered four bands are related to transitions from the 6H15/2 ground state to the 4M7/2 + 6P7/2, 4I11/2, 4I13/2 + 4F7/2 and 4G11/2 excited states.The emission spectrum exhibited three emission bands corresponding to the 4F9/2 → 6H15/2 (483 nm; blue), 4F9/2 →6H13/2 (575 nm; yellow) and 4F9/2 → 6H11/2 (664 nm; red) transitions.
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