The role of charge carrier trapping in determining radioluminescence (RL) efficiency increase during prolonged irradiation of scintillators has been studied by using YPO4:Ce,Nd as a model material. The Nd3+ ions act as efficient electron traps minimizing the role of intrinsic defects. Different Nd contents were considered in order to point out the correlation between the trap concentration and the detected RL efficiency dose dependence. RL measurements as a function of temperature clarified the role of the trap thermal stability in determining the shape and the magnitude of such effect. We propose also a model based on trap filling which is able to describe accurately the complex processes which are involved. © 2014 American Chemical Society.

Moretti, F., Patton, G., Bleski, A., Fasoli, M., Vedda, A., Trevisani, M., et al. (2014). Radioluminescence Sensitization in Scintillators and Phosphors: Trap Engineering and Modeling. JOURNAL OF PHYSICAL CHEMISTRY. C, 118(18), 9670-9676 [10.1021/jp501717z].

Radioluminescence Sensitization in Scintillators and Phosphors: Trap Engineering and Modeling

MORETTI, FEDERICO
;
FASOLI, MAURO;VEDDA, ANNA GRAZIELLA;
2014

Abstract

The role of charge carrier trapping in determining radioluminescence (RL) efficiency increase during prolonged irradiation of scintillators has been studied by using YPO4:Ce,Nd as a model material. The Nd3+ ions act as efficient electron traps minimizing the role of intrinsic defects. Different Nd contents were considered in order to point out the correlation between the trap concentration and the detected RL efficiency dose dependence. RL measurements as a function of temperature clarified the role of the trap thermal stability in determining the shape and the magnitude of such effect. We propose also a model based on trap filling which is able to describe accurately the complex processes which are involved. © 2014 American Chemical Society.
Articolo in rivista - Articolo scientifico
phosphors; radioluminescence; scintillators
English
2014
118
18
9670
9676
none
Moretti, F., Patton, G., Bleski, A., Fasoli, M., Vedda, A., Trevisani, M., et al. (2014). Radioluminescence Sensitization in Scintillators and Phosphors: Trap Engineering and Modeling. JOURNAL OF PHYSICAL CHEMISTRY. C, 118(18), 9670-9676 [10.1021/jp501717z].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/83797
Citazioni
  • Scopus 52
  • ???jsp.display-item.citation.isi??? 50
Social impact