http://dx.doi.org/10.1016/j.jlumin.2011.04.030">
 

Document Type

Journal Article

Department/Unit

Department of Physics

Title

Low temperature quenching and high efficiency Tm3+, La3+ or Tb3+ co-doped CaSc2O4:Ce3+ phosphors for light-emitting diodes

Language

English

Abstract

Low temperature quenching and high efficiency CaSc2O 4:Ce3+ (CSO:Ce3+) phosphors co-doped with Tm3+, La3+ and Tb3+ ions were prepared by a solid state method and the phase-forming, morphology, luminescence and application properties of these phosphors were investigated. The results showed that co-doping of Tm3+, La3+ and Tb3+ ions can improve the luminescence properties and decrease temperature quenching of CSO:Ce3+ phosphor remarkably. High efficiency green-light-emitting diodes were fabricated with the prepared phosphors and InGaN blue-emitting (∼460 nm) chips. The good performances of the green-light-emitting LEDs made from co-doped CSO:Ce3+ phosphors confirm the luminescence enhancement and indicate that Tm3+, La3+ and Tb 3+ co-doped CSO:Ce3+ phosphors are suitable candidates for the fabrication of high efficiency white LEDs. © 2011 Elsevier B.V.

Keywords

CaSc2O4:Ce3+, Co-doping, LED, Phosphor

Publication Date

2011

Source Publication Title

Journal of Luminescence

Volume

131

Issue

8

Start Page

1770

End Page

1775

Publisher

Elsevier

ISSN (print)

00222313

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