X-ray luminescence properties of LiLa1-xNdxP4O12 nanocrystals: Concentration and size effects

L. Marciniak (1) , R. Tomala (1) , Yannick Guyot (2) , Federico Moretti (2) , D. Hreniak (1) , W. Strek (1)

1 PAN - Polska Akademia Nauk = Polish Academy of Sciences = Académie polonaise des sciences
2 ILM - Institut Lumière Matière [Villeurbanne]

X-ray luminescence properties of LiLa1−xNdxP4O12 nanocrystals were investigated for the first time. The influence of the Nd3+ concentration on the integral emission intensities in visible and near infrared emission region were investigated. It was found that emission from 2F(2)5/2 is strongly affected by cross-relaxation process and its intensity decreases exponentially with Nd3+ amount, while emission from 4F7/2 + 4S3/2, 4F5/2 + 2H11/2, and 4F3/2 states rises up sublinearly with Nd3+ concentration. The size effect on emission spectra under X-ray excitation was presented.

Mots clés: Tetraphosphates; X-ray luminescence; Concentration quenching; Size effect

Domaines: Chimie; Physique [physics]; Sciences de l'ingénieur [physics]

L. Marciniak, R. Tomala, Yannick Guyot, Federico Moretti, D. Hreniak, et al.. X-ray luminescence properties of LiLa1-xNdxP4O12 nanocrystals: Concentration and size effects. Optical Materials, 2015, 50, pp.134-137. ⟨10.1016/j.optmat.2015.10.012⟩. ⟨hal-02307272⟩