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Infrared to visible upconversion emission in Nb2O5 modified tellurite glasses triply doped with rare earth ions       
Yazarlar
Prof. Dr. Gökhan BİLİR Prof. Dr. Gökhan BİLİR
Kafkas Üniversitesi, Türkiye
Doç. Dr. Hüseyin ERTAP Doç. Dr. Hüseyin ERTAP
Kafkas Üniversitesi, Türkiye
Lidong Ma
Türkiye
Baldassare Di Bartolo
Türkiye
Özet
We report on the up-conversion emission properties of Nb2O5 modified tellurite glasses activated with rare earth ions in the Pr-Er-Yb, Er-Tm-Yb and Tm-Ho-Yb order. Glass samples were synthesized using the traditional melt quenching method. The synthesized samples were optically characterized using the optical absorption and up-conversion emission measurements. The band gap values of the samples for direct and indirect transitions were calculated using the absorption spectra of the samples. The up-conversion luminescence spectra of the samples were measured in the 350 to 900 nm wavelength range and three primary colors (red, green and blue) were simultaneously obtained from the samples activated with Tm-Er-Yb ions under 975 nm excitation. The dependence of the emission intensities on the pumping excitation power were investigated to make an explanation for the possible mechanisms responsible for the up-conversion emission of the samples. The color quality parameters, like CIE coordinates and color temperatures, of the obtained visible emissions, were also determined.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı MATERIALS RESEARCH EXPRESS
Dergi ISSN 2053-1591
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q3
Makale Dili İngilizce
Basım Tarihi 08-2019
Cilt No 6
Sayı 8
Sayfalar 85203 / 0
Doi Numarası 10.1088/2053-1591/ab1e0e
Makale Linki http://stacks.iop.org/2053-1591/6/i=8/a=085203?key=crossref.effbec0a0a174083271a298fd3725b77