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M<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:<i>x</i>Dy<sup>3+</sup> (M = Ca/Sr) Single-Phase Full-Color Phosphor with High Thermal Emission Stability

DOI

92

Citations

18

References

2017

Year

Jiaqi Long, Fujuan Chu, Yuzhen Wang, Chong Zhao, Wenfeng Dong, Xuanyi Yuan, Chaoyang Ma, Zicheng Wen, Ran Ma, Miaomiao Du,
Inorganic Chemistry

Abstract

Two series of phosphors of Ca<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:Dy<sup>3+</sup> and Sr<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:Dy<sup>3+</sup> single-phase white-emitting phosphors with high thermal emission stability are synthesized by the high-temperature solid-state reaction. The crystal structure, photoluminescence (PL), PL excitation (PLE), and thermal PL quenching spectra of Ca<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:xDy<sup>3+</sup> and Sr<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:xDy<sup>3+</sup> were investigated and compared in detail. Upon excitation at 387 nm, M<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:xDy<sup>3+</sup> (M = Ca/Sr) showed white emission centered at 480, 571, 660, and 754 nm. The white-emitting Dy-phosphor Ca<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:Dy<sup>3+</sup> (CMSP:Dy) had good terminal stability. The emission intensity of Ca<sub>8</sub>MgSc(PO<sub>4</sub>)<sub>7</sub>:Dy<sup>3+</sup> still remained 95.2% of that at room temperature at 160 °C, and remained 77.3% at 300 °C under 387 nm excitation.

References

YearCitations

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