Structural, UV-VIS-NIR Luminescence And Decay Associated Spectral Profiles Of Sm3+ Doped Calcium Phosphate Glass

Sooraj H. Nandyala1,2*, Graham Hungerford3, J. L. Rao4, Isabel B. Leonor1,2, Ricardo Pires1,2, Rui L. Reis1,2

1ICVS/3B's, PT Government Associated Laboratory, Braga/Guimarães, Portugal

23B's Research Group – Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark, Barco, 4805015 Guimarães, Portugal

3HORIBA Jobin Yvon IBH Ltd., 133 Finnieston Street, Glasgow G3 8HB, United Kingdom

4Department of Physics, Sri Venkateswara University, Tirupati 517502, Andhra Pradesh, India

Adv. Mater. Lett., 2016, 7 (9), pp 702-707

DOI: 10.5185/amlett.2016.6244

Publication Date (Web): Jul 09, 2016

E-mail:nandyala.sooraj@gmail.com

Abstract


The present paper reports a calcium phosphate host glass doped with 2 mol% of samarium oxide (2Sm). The glass has been characterized by FTIR, SEM, EDS analysis, and X-ray mapping. Exciting in the visible, using 405 nm and 423 nm, we observed intense, sharp green, yellow, orange emission peaks (4G5/2→6H5/2, 7/2, 9/2) at 560nm, 596 nm and 643 nm respectively. A weak red emission was also observed at 704 nm. Two NIR peaks at 1134nm (4G5/2→6F11/2) and 1310 nm (4G5/2→6F9/2) are monitored by using an excitation at 1060 nm. Furthermore, by making use of time-resolved emission spectroscopy (TRES) measurements, enabled the decay associated spectra to be obtained and the kinetic parameters for the different emission bands to be determined for comparison with steady state emission spectra.

Keywords

Sm3+ glass, time resolved emission spectra, decay associated spectra, calcium phosphate glass.

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