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Unconventional Production of Bright White Light Emission by Nd Doped and Nominally Un Doped inline formula tex math notation TeX hbox Y 2 hbox O 3 tex math inline formula Nano Powders       
Yazarlar (5)
Prof. Dr. Gökhan BİLİR Prof. Dr. Gökhan BİLİR
Kafkas Üniversitesi, Türkiye
Gönül Eryürek
İstanbul Teknik Üniversitesi, Türkiye
J Collins
Türkiye
M Cesaria
Türkiye
B Di Bartolo
Türkiye
Devamını Göster
Özet
We report the production of a broad band (ranging from 400 to 900 nm) white light following the monochromatic infrared light (803.5 and 975 nm) excitation of both nominally un-doped and Nd3+-doped Y2O3 nano-powders, even up to 20% of Nd3+ content. Experimental results indicate that such emission feature is a nano-scale phenomenon, cannot be ascribed to an overlap of sharp emission bands in the un-doped case and, even if assisted by the Nd34 presence, is a host matrix-related process. The measured white light emission is strongly dependent on either environment pressure (a pressure threshold occurs) or pumping power. The rising patterns of the white light emission were found to increase faster for either increasing Nd3+ content and pumping power or decreasing particle size. Notably, high correlated color temperature (2756 K), color rendering index (99), and efficiency (864 lx/W) values were measured for the un-doped sample under 803.5 nm exciting wavelength.
Anahtar Kelimeler
laser diode | laser spectroscopy | white light emission | Y O 2 3
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı IEEE Photonics Journal
Dergi ISSN 1943-0655 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Exp, SCOPUS, Curation, Current Contents Engineering Computing & Technology, Current Contents Physical Chemical & Earth Sciences, Electronics & Telecommunications Collection, Essential Science Indicators, Reference Master, Sophia
Makale Dili İngilizce
Basım Tarihi 08-2014
Cilt No 6
Sayı 4
Sayfalar 1 / 17
Doi Numarası 10.1109/JPHOT.2014.2339312
Makale Linki http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6857366