A Simple Sol–Gel Route for the Synthesis and Characterization of Tm-Doped CaAl2O4 Nanophosphor
Parole chiave:
XRD, SEM, PL, sol-gel methodAbstract
Calcium Aluminate nanophosphor doped with Thulium (CaAl2O4: Tm) was synthesized by simple sol–gel route. The obtained nanophosphor was characterized by X-ray diffraction technique (XRD). The surface morphology was determined by scanning electron microscopy (SEM). Also photoluminescence spectra (PL), and thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) characterization were done. The XRD revealed the formation of monoclinic structure and the particle size was determined by Scherrer formula. It showed that the particles were of somewhat round shape and interlinked with each other, leading to the formation of bigger particles. Also it was found that some irregular aggregations were formed in the image. It was found that PL emission was obtained at 390 nm, 520 nm, 790 nm corresponding to blue, green and IR region of the spectrum, respectively for 360 nm excitation. Also, PL emission was obtained at 395 nm, 535 nm, 805 nm for 800 nm excitation. When comparing up-conversion luminescence with down-conversion, the up-conversion luminescence spectra were red shifted. Keywords: XRD, SEM, PL, sol–gel method, calcium aluminate nanophosphor Cite this Article Freeda M, Suresh G. A Simple Sol–Gel Route for the Synthesis and Characterization of Tm-Doped CaAl2O4 Nanophosphor. Journal of Nanoscience, Nanoengineering and Applications. 2016; 6(1): 6–10p.
File supplementari
Pubblicato
Fascicolo
Sezione
Licenza
Declaration and Copyright Transfer Form
(to be completed by authors)
I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.
· I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
· I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
· I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
· I/We also agree to the authorship of the article in the following order:
Author’s name
1. ________________
2. ________________
3. ________________
4. _______________
We Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal. |
