Effect of pressure and temperature on the white light produced by Ytterbium (III) doped and undoped Yttrium Silicate nanopowders excited by a laser diode

Hatun Cinkaya*, Gonul Eryurek, Gokhan Bilir, Murat Erdem, Baldassare Di Bartolo

*Bu çalışma için yazışmadan sorumlu yazar

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10 Atıf (Scopus)

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.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)321-326
Sayfa sayısı6
DergiJournal of Luminescence
Hacim181
DOI'lar
Yayın durumuYayınlandı - 1 Oca 2017

Bibliyografik not

Publisher Copyright:
© 2016 Elsevier B.V.

Finansman

The study was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) and The Scientific Research Projects Unit (BAP) of Istanbul Technical University with Project no. 38542 . We also acknowledge Prof. Dr. Ahmet Gul and Dr. Barbaros Akkurt from Istanbul Technical University-Department of Chemistry for FTIR measurements.

FinansörlerFinansör numarası
Scientific Research Projects Unit
TUBITAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu
Istanbul Teknik Üniversitesi38542

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