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Results on nanosized CaTiO3:Pr3+ phosphor

C. GHEORGHIES1,* , P. BOUTINAUD2, M. LOÏC2, VALERIU O. ATANASIU3

Affiliation

  1. Dunarea de Jos University of Galati, Faculty of Science, str. Domneasca no.47, Romania
  2. a Blaise-Pascal University, Ecole Nationale Supérieure de Chimie de Clermont-Ferrand, Ensemble Scientifique des Cézeaux - B.P. 187-63174 Aubière Cedex , France
  3. Dunarea Secondary School, Galati, Romania

Abstract

Luminescent films of Pr3+-doped Ca TiO3, being superior to those of the type Y2O3:Eu3+, have been prepared by sol-gel (SG), dip-coating (D-C), radio-frequency sputtering (R-FS) and spray (S) technologies. The structure, microstructure and chemical composition of these films were characterized by XDR, AFM, electron microscopy and Rutherford Back Scattering (RBS). The response of these films under UV pumping was estimated by time-resolved laser spectrometry (T-RLS). The irradiative transition and photoluminescence performances of films strongly depend on sintering conditions or applied thermal treatment, that affect both the structural and microstructural characteristics. The photoluminescence intensity increases along with growing of the sintering temperature, whilst the brightness increases for D-C films and decreases for films prepared by (S) technique..

Keywords

CaTiO3:Pr3+ Phosphor, Structure, Photoluminescence spectra.

Submitted at: March 2, 2009
Accepted at: May 28, 2009

Citation

C. GHEORGHIES, P. BOUTINAUD, M. LOÏC, VALERIU O. ATANASIU, Results on nanosized CaTiO3:Pr3+ phosphor, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 5, pp. 583-589 (2009)