Vacuum referred binding energy of 3d transition metal ions for persistent and photostimulated luminescence phosphors of cerium-doped garnets

Vacuum referred binding energy of 3d transition metal ions for persistent and photostimulated luminescence phosphors of cerium-doped garnets

Ueda, J. (Kyoto University)
Hashimoto, Atsunori (Kyoto University)
Takemura, Shota (Kwansei Gakuin University)
Ogasawara, Kazuyoshi (Kwansei Gakuin University)
Dorenbos, P. (TU Delft RST/Fundamental Aspects of Materials and Energy)
Tanabe, Setsuhisa (Kyoto University)

2017

The Y₃Al_5−xGa_xO₁₂(YAGG):Ce³⁺-Cr³⁺ persistent phosphor is one of the materials in which Cr³⁺ ions act as electron traps. The possibility of electron traps by other transition metal ions (TM³⁺, TM = Sc, Ti, V, Cr, Fe) was investigated and those electron trap depth was compared with each other. In the thermoluminescence (TL) glow curves, the YAGG:Ce³⁺ samples co-doped with different TM³⁺ ions show different TL glow peak temperatures (i.e. different electron trap depth). The estimated vacuum referred binding energy of TM²⁺ from the trap depth shows a zig-zag curve, which is found to be originated from the different 3d electron energies affected by a number of d electron, nuclear charge and crystal field splitting. Utilizing the obtained TM²⁺ zig-zag curve, a new persistent phosphor of Y₃Al₂Ga₃O₁₂:Ce³⁺-Sc³⁺ and a photostimulated phosphor of Y₃Al₂Ga₃O₁₂:Ce³⁺-V³⁺ were successfully developed.

http://resolver.tudelft.nl/uuid:90940924-00ae-4229-9047-b46fe12bda3c

https://doi.org/10.1016/j.jlumin.2017.07.006

2019-07-12

0022-2313

Journal of Luminescence, 192, 371-375

Accepted Author Manuscript

Institutional Repository

journal article

© 2017 J. Ueda, Atsunori Hashimoto, Shota Takemura, Kazuyoshi Ogasawara, P. Dorenbos, Setsuhisa Tanabe