Influence on Afterglow Spectra due to Different Phases of Zn₃(PO₄)₂: Mn²⁺

Abstract:

High temperature solid state reaction has been used to prepare Zn₃(PO₄)₂: Mn²⁺. XRD analysis shows that different phases have been generated with different Mn²⁺ doping concentration at the same sintering temperature. Low Mn²⁺ doping concentration is conducive to form α phase, while γ is in favor of high Mn²⁺ doping concentration. In α phase, the emission spectrum of Mn²⁺ is a wide emission band peaking at 542 nm, green fluorescence. In γ phase, the emission spectrum of Mn²⁺ is a wide emission band peaking at 608 nm, red fluorescence. In the both phases, green and red afterglows have been observed. The red afterglow in γ phase has stronger initial brightness and longer afterglow decay time than the green afterglow in α phase, the reason of which lies in the larger trap concentration in γ phase.

• Periodical: Applied Mechanics and Materials (Volumes 423-426)
• Pages: 415-418
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.423-426.415
• Online since: September 2013
• Authors: Zi Ran Liu*, Rui Xia Zhong, Hui Zhao, Xiao Yan Zhang
• Keywords: Afterglow, Mn²⁺, Red Afterglow, Zn₃(PO₄)₂

References

[1] C.Y. Li, Q. Su and J.R. Qiu: Chin. J. Lumin. Vol. 24 (2003) p.19.

[2] M. Kowatari, D. Koyama, Y. Satoh, K. Iinuma and S. Uchida: Nucl. Instrum. Meth. Phys. Res. A Vol. 480 (2002) p.431.

[3] J. Qiu, K. Miura and H. Inouye: Appl. Phys. Lett. Vol. 73 (1998) p.1763.

[4] C. Li, Y. Yu, S. Wang and Q. Su: J. Non-Crystal. Solids Vol. 321 (2003) p.191.

[5] M.A.P. Almeida, L.S. Cavalcante, M. Siu Li, J.A. Varela and E. Longo: J. Inorg. Organomet. Polym. Vol. 22 (2012) p.264.

[6] J.S. Stephens and C. Calvo: Can. J. Chem. Vol. 45 (1967) p.2303.

[7] J.K. Berkowitz and J.A. Olsen: J. Lumin. Vol. 50 (1991) p.111.

[8] A.L. Smith: J. Electrochem. Soc. Vol. 98 (1951) p.363.

[9] R. Chen and D.J. Lockwood: J. Electrochem. Soc. Vol. 149 (2002) p. S69.