img
Effect of pressure and temperature on the white light produced by Ytterbium (III) doped and undoped Yttrium Silicate nanopowders excited by a laser diode       
Yazarlar
Hatun Çınkaya Yılmaz
İstanbul Teknik Üniversitesi, Türkiye
Gönül Eryürek
İstanbul Teknik Üniversitesi, Türkiye
 Gökhan BİLİR Gökhan BİLİR
Kafkas Üniversitesi, Türkiye
Murat Erdem
Marmara Üniversitesi, Türkiye
Baldassare Di Bartolo
Türkiye
Özet
In the present study, we have directed our attention to yttrium silicate nanopowders undoped and with different ytterbium (III) dopant concentrations, systems that, when illuminated by a laser diode emit white light. We have investigated the effects that two physical parameters, pressure of the ambient and temperature of the powders have on the emission of the white light. We have observed that low pressure and high temperatures enhance the intensity of the emitted white light. At high pressure, the output from the nanopowder is represented by groups of sharp lines due to ytterbium cooperative emission and unwanted erbium impurities. As the pressure decreases to 0.01 mbar, the spectrum changes to a wide band resembling the white light spectrum. High temperatures of the nanopowders enhance the emission of white light.
Anahtar Kelimeler
Pressure effect | Temperature effect | White light | Ytterbium (III) | Yttrium silicate | Sol-gel
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF LUMINESCENCE
Dergi ISSN 0022-2313
Dergi Tarandığı Indeksler SCI-Exp, SCOPUS, Curation, Current Contents Physical Chemical & Earth Sciences, Essential Science Indicators, Pdf2xml, Pdf2xml, Reference Master, Sophia
Makale Dili İngilizce
Basım Tarihi 01-2017
Cilt No 181
Sayı 1
Sayfalar 321 / 326
Doi Numarası 10.1016/j.jlumin.2016.09.044
Makale Linki http://linkinghub.elsevier.com/retrieve/pii/S0022231316307669