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Up conversion emission properties and unexpected white light emission from Er3 Yb3 doped Gd2O3 nanophosphors       
Yazarlar
 Gökhan BİLİR Gökhan BİLİR
Kafkas Üniversitesi, Türkiye
Olgun Erguzel
Türkiye
Özet
Gd2O3 nanopowders doped with Er3+ and Yb3+ were synthesized using the combustion method. X-ray diffraction and scanning electron microscopy were used to estimate the crystallite size and the morphology of the materials. Scherrer and Warren-Averbach calculations were employed to estimate the mean crystallite size and size distribution of the powders. The crystallite size was found to be <100 nm. The down-and up-conversion emission properties of the materials were studied by laser spectroscopy. Results showed that the 1.5 μmemission of the Er3+ ions broadened with an increasing amount of Yb3+ ions. An n-shape pumping power dependence of the up-conversion emission intensity was observed. Formation of new emission bands and unexpected production of white light emission with increasing excitation power were also observed. The color quality parameters of the obtained visible emission were also measured.
Anahtar Kelimeler
Gd O 2 3 | Nanophosphors | Upconversion | White light | XRD
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-Exp, SCOPUS, Curation, Current Contents Physical Chemical & Earth Sciences, Essential Science Indicators, Reference Master, Sophia
Makale Dili İngilizce
Basım Tarihi 10-2016
Cilt No 3
Sayı 10
Sayfalar 106201 / 233
Doi Numarası 10.1088/2053-1591/3/10/106201
Makale Linki http://stacks.iop.org/2053-1591/3/i=10/a=106201?key=crossref.da05055ee4191cd6e5f36e5de0980954