Green emitting YPO4:Tb3+and orange-red emitting YPO4:Tb3+, Eu3+phosphors were prepared by conventional solid-state reaction and characterized in order to develop materials for applications in white light-emitting diodes (w-LED). First, the doping level of singly doped YPO4:Tb3+was systematically increased in order to obtain the highest green-to-blue emission intensity ratio through the quenching of the5D3emission, by maintaining an acceptable degree of total luminescence. The best emission performance, in terms of color purity and intensity, was obtained with a 5 mol% concentration. Starting from this result, we have synthesized and measured the emission properties of the co-doped phosphors and investigated the Tb3+to Eu3+energy transfer (ET) mechanism. The possibility of tuning the color of the luminescence by properly adjusting Eu3+concentration was finally discussed.

Tunable luminescence and energy transfer properties in YPO4:Tb3+, Eu3+/Tb3+phosphors / Yahiaoui, Z.; Hassairi, M. A.; Dammak, M.; Cavalli, E.; Mezzadri, F.. - In: JOURNAL OF LUMINESCENCE. - ISSN 0022-2313. - 194(2018), pp. 96-101. [10.1016/j.jlumin.2017.10.001]

Tunable luminescence and energy transfer properties in YPO4:Tb3+, Eu3+/Tb3+phosphors

Cavalli, E.;Mezzadri, F.
2018

Abstract

Green emitting YPO4:Tb3+and orange-red emitting YPO4:Tb3+, Eu3+phosphors were prepared by conventional solid-state reaction and characterized in order to develop materials for applications in white light-emitting diodes (w-LED). First, the doping level of singly doped YPO4:Tb3+was systematically increased in order to obtain the highest green-to-blue emission intensity ratio through the quenching of the5D3emission, by maintaining an acceptable degree of total luminescence. The best emission performance, in terms of color purity and intensity, was obtained with a 5 mol% concentration. Starting from this result, we have synthesized and measured the emission properties of the co-doped phosphors and investigated the Tb3+to Eu3+energy transfer (ET) mechanism. The possibility of tuning the color of the luminescence by properly adjusting Eu3+concentration was finally discussed.
Tunable luminescence and energy transfer properties in YPO4:Tb3+, Eu3+/Tb3+phosphors / Yahiaoui, Z.; Hassairi, M. A.; Dammak, M.; Cavalli, E.; Mezzadri, F.. - In: JOURNAL OF LUMINESCENCE. - ISSN 0022-2313. - 194(2018), pp. 96-101. [10.1016/j.jlumin.2017.10.001]
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: http://hdl.handle.net/11381/2847699
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 28
  • ???jsp.display-item.citation.isi??? 25
social impact