Surface Characterization and Photoluminescence Properties of Ce3+,Eu Co-Doped SrF2 Nanophosphor

Materials

Mubarak Y. A. Yagoub²  Hendrik C. Swart²  Luyanda L. Noto²  Peber Bergman¹  Elizabeth Coetsee² 

[1] Department of Physics, Chemistry and Biology, Linköping University, Linköping S-581 83, Sweden; E-Mail:;Department of Physics, University of the Free State, PO Box 339, Bloemfontein, ZA 9300, South Africa; E-Mails:

关键词: SrF₂;    cerium;    TOF-SIMS;    XPS;    shake-down;    energy transfer;   

DOI  :  10.3390/ma8052361

来源: mdpi

【 摘 要 】

SrF₂:Eu,Ce³⁺ nanophosphors were successfully synthesized by the hydrothermal method during down-shifting investigations for solar cell applications. The phosphors were characterized by X-ray diffraction (XRD), scanning Auger nanoprobe, time of flight-secondary ion mass spectrometry (TOF-SIMS), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) spectroscopy. XRD showed that the crystallite size calculated with Scherrer’s equation was in the nanometre scale. XPS confirmed the formation of the matrix and the presence of the dopants in the SrF₂ host. The PL of the nanophosphor samples were studied using different excitation sources. The phenomenon of energy transfer from Ce³⁺ to Eu²⁺ has been demonstrated.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.