Optical properties and Judd–Ofelt analysis of Nd2O3 nanocrystals embedded in polymethyl methacrylate

Sevcan Tabanli*, Gokhan Bilir, Gonul Eryurek

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20 Atıf (Scopus)


PMMA matrices were doped with nano-crystalline neodymium oxides synthesized by thermal decomposition process. X-ray diffraction and high-resolution transmission electron microscopy measurements were carried out to investigate the structure, phase, and the morphology of the Nd2O3 nanocrystals and those embedded in the PMMA matrix. The average grain sizes were estimated 35 ± 6 nm and 46 ± 4 nm for non-annealed and annealed Nd2O3 particles, respectively. The grain size distributions (GSD) were calculated from the diffraction peaks of the annealed and non-annealed Nd2O3 powders and doped PMMA samples. The mass density, refractive index, UV–Visible absorption spectra were measured and the data were analyzed using the Judd–Ofelt approach to determine the oscillator strengths, the spontaneous emission probabilities and the branching ratios as a function of the nano-crystalline Nd2O3 content in the range of 0.1 wt.%–20 wt.% of MMA. Luminescence spectra upon 808 nm diode laser excitation were carried out in the wavelength range of 850–1550 nm at room temperature. The photoluminescence study has shown that the reasonably sharp emission peaks were observed upon heat treatment at 800 °C for 24 h for all concentrations of Nd2O3 nanopowders in PMMA. The infrared laser transition of Nd3+ ions at about 1.06 μm due to the 4F3/24I11/2 transition was analyzed and discussed in Nd2O3 system for their possible applications in the photonic technology.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)170-178
Sayfa sayısı9
DergiJournal of Rare Earths
Basın numarası2
Yayın durumuYayınlandı - Şub 2018

Bibliyografik not

Publisher Copyright:
© 2018 Chinese Society of Rare Earths


Foundation item: This work was supported by Istanbul Technical University Scientific Research Projects Department (ITU BAP, project number 39283 ). The author, Sevcan Tabanli, is grateful to The Scientific and Technological Research Council of Turkey for granting a scholarship (TUBITAK, 2211C) for her Ph.D. studies.

FinansörlerFinansör numarası
ITU BAP39283
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu
Istanbul Technical University Scientific Research Projects Department

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