Upconversion Emission Properties of Nb2O5 Modified Tellurite-Based Glasses Activated with Rare Earth Ions

Year 2019, Volume: 6 , 122 - 125, 25.07.2019

Huseyin Ertap Gokhan Bılır Lidong Ma Baldassare Dı Bartolo

Abstract

The
upconversion emission properties of Nb₂O₅ modified
tellurite-based glasses activated with Er³⁺, Tm³⁺, Ho³⁺,
and Yb³⁺ ions were studied. The glass samples wer obtained using
melt-quenching method. The optical absorption spectra of the samples were
collected in the 400-1100 nm wavelenth range at room temperature. The forbidden
gap of the glasses were determined using the absorption spectra of the samples.
The upconversion emission of samples were obtained under the 975 nm laser
excitation and recorded in the 350-900 nm wavelength range. Three primary
colors were simultaneously obtained from the samples under the 975 nm
excitation. The CIE-1931 coordinates and the correlated color temperaatures of
obtained upconversion emissions were also determined using the upconversion
emission spectra.

Keywords

Tellurite glasses , Nb2O5 , Rare earth ions , Upconversion

References

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