Upconversion luminescence properties of Y2O3: Yb3+/Er3+/Tm3+ nanocrystal doped PMMA nanocomposites

Sevcan Tabanli*, Gonul Eryurek

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11 Atıf (Scopus)

Özet

Y2O3 nanocrystals triply doped with Yb3+, Er3+, Tm3+ ions were synthesized via alginic acid-assisted gelation using thermal decomposition method and annealed at 800 °C for 24 h. Nanopowders were embedded into PMMA matrix via free-radical polymerization in an ultrasonic bath. X-ray diffraction and transmission electron microscopy measurements have shown that the crystal grain sizes decreased significantly with the narrow size distributions of the nanocrystals in PMMA matrix. A diode laser at 975 nm was used to measure the upconversion luminescence of the annealed nanopowders and those embedded in PMMA between the 400–850 nm wavelength region. The Er3+ concentration and the excitation power density dependencies of the relative intensities for red, green and blue upconversion luminescence in the nanopowder and PMMA nanocomposites are found to be different. The measured CIE-1931 color coordinates of the upconversion luminescence in PMMA nanocomposites show appreciable color stability under different excitation power densities, which is required for potential applications in the field of photonics.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)43-51
Sayfa sayısı9
DergiJournal of Non-Crystalline Solids
Hacim505
DOI'lar
Yayın durumuYayınlandı - 1 Şub 2019

Bibliyografik not

Publisher Copyright:
© 2018 Elsevier B.V.

Finansman

This work was supported by project no. 39283 from Istanbul Technical University Scientific Research Projects Department (ITU BAP). The author, Sevcan Tabanli, would like to thank the Scientific and Technological Research Council of Turkey (TUBITAK) for the Priority Research Areas Doctoral Scholarship (2211-C).

FinansörlerFinansör numarası
ITU BAP
Istanbul Technical University Scientific Research Projects Department
Priority Research Areas Doctoral Scholarship2211-C
TUBITAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

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