Er3+ Ions Doped Alkali Boro Bismuth Tellurite Glasses for Photonic Applications

The effect of Er3+ ions doped alkali boro bismuth tellurite glasses on down conversion properties have been investigated upon 379 nm wavelength excitation and discussed with different concentrations of Er3+ ions. The emission spectra have strong green emission peaks at 524 and 546 nm but the red emission peak at 665 nm disappears in the obtained glass system. Furthermore, the concentration quenching effect have been found beyond 1 mol% of Er3+ ions. The composition dependence of glass transition temperature obtained from the DSC curves implies the increase in the rigidity of the glass network with increasing the Er2O3 concentration up to 1 mol% and thereafter slightly decrease with increasing the Er2O3 concentration up to 2 mol%. The obtained thermally stable erbium doped glasses seem to be potential candidate for display and photonic devices applications