Optical properties of cerium doped oxyfluoroborate glass

• Cerium doped oxyfluorobarate glass shows strong absorption in ultraviolet region.
• Optical band gap decreases with increase in concentration of cerium ion.
• The red shift of absorption and emission bands has been observed on increasing the concentration of cerium.
• Two different emission centers of Ce3+ ion have been observed in these glasses.

Cerium doped oxyfluoroborate glasses have been prepared and its spectroscopic properties have been discussed. It is found that the absorption edge shifts towards the lower energy side for the higher concentration of cerium dopant. Optical band gap for these glasses have been calculated and it is found that the number of non-bridging oxygen increases with cerium content. The emission spectra of these glasses have been recorded using UV laser radiations (266 and 355 nm) and it is observed that these glasses show bright blue emission. On the basis of excitation and emission spectra we have reported the existence of at least two different emission centers of Ce3+ions.

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