The effect of calcium substitution on the afterglow of Eu2+/Dy3+ doped Sr4Al14O25

• Authors: Danuta Dacyl , Dominik Uhlich , Thomas Jüstel
• Languages of publication: EN

Abstracts

EN

The effect of calcium substitution on the afterglow of tetrastrontium aluminate phosphors (Sr4Al14O25:Eu2+, Dy3+) was investigated. A series of (Sr1-xCax)O⊎nAl2O3:Eu2+(1%), Dy3+(0.5%), with variation of calcium content (x = 0 − 1), were synthesized by a high temperature solid state reaction in a reducing atmosphere. The photoluminescence, persistent luminescence (afterglow), and lumen equivalents of these materials were studied and compared. It turned out that the afterglow properties of the phosphors were strongly dependent on the Sr/Ca ratio. As the Ca content increased, a phase transition and blue shift in emission spectra were observed. [...]

Keywords

EN

Afterglow; Tetra strontium aluminate; Europium; Dysprosium; Photoluminescence spectra; Phase transition

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2009
• Volume: 7
• Issue: 2
• Pages: 164-167

Dates

published

1 - 6 - 2009

online

9 - 4 - 2009

Contributors

author

Danuta Dacyl

• FB Chemieingenieurwesen, University of Applied Sciences Münster, D-48565, Steinfurt, Germany

author

Dominik Uhlich

• FB Chemieingenieurwesen, University of Applied Sciences Münster, D-48565, Steinfurt, Germany

author

Thomas Jüstel

• FB Chemieingenieurwesen, University of Applied Sciences Münster, D-48565, Steinfurt, Germany

References

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Identifiers

DOI

10.2478/s11532-009-0017-z