Photoluminescence Studies on Lithium- Calcium Borophosphate Glasses doped with Transition Metal Ions

Abstract

The mixed alkali borophosphate 25Li2CO3:25Ca2O3:30B2O3:20P2O5 glasses doped with 1 mol% of different transition metal ions were prepared and studied using photoluminescence techniques. The transition metal ions used included chromium, manganese and iron. Chromium doped glass exhibits a violet emission band at ̴ 316 nm and this band has been assigned to the transition of z6Dᵒ1/2 → a4P5/2. While manganese doped glass show a violet emission band at ̴ 408 nm which is assigned to z7Pᵒ4 → a5D4 and a red emission band at ̴ 632 nm which is assigned to the transition of z5Pᵒ3 → a5G6. Lastly, for the iron doped glass shows many emission bands along the visible range.

Luminescence properties of rare earth and transition metal ions doped potassium lead borophosphate glass

“…The codoped Fe 2+ and Ti 2+ ions samples emission peak increases compare to the single doped with other dopants in the results obtained. Hyperfine structure of glasses contributed to the splitting of energy levels [14]. Comparison among samples, Y 2+ ions doping is weaker than other activators.…”

“…Ti 4+ with D o configuration show strong absorption in the ultraviolet region and shifts the emission bands to the ultraviolet and blue-green spectral band depending on host glass composition [13]. Many researches have been carried out by a great number of researchers for understanding luminescence properties of rare earth and transition metal ions doped glasses but there still less information [14]. We have used single doped and codoped method to examine the luminescence properties of rare earth and transition metal ions doped potassium lead borophosphate glass in UV or visible band region.…”