Wang Yanji, Zhao Wei, Su Mianzeng, Song Zengfu. TWO LUMINESCENT CENTERS IN Sr<sub>9</sub>Ca(PO<sub>4</sub>)<sub>6</sub>Cl<sub>2</sub>:Eu<sup>2+</sup> CRYSTAL[J]. Chinese Journal of Luminescence, 1990,11(2): 122-125
Wang Yanji, Zhao Wei, Su Mianzeng, Song Zengfu. TWO LUMINESCENT CENTERS IN Sr<sub>9</sub>Ca(PO<sub>4</sub>)<sub>6</sub>Cl<sub>2</sub>:Eu<sup>2+</sup> CRYSTAL[J]. Chinese Journal of Luminescence, 1990,11(2): 122-125DOI:
is a lamp phosphor with high efficiency.Its single crystals have been grown by programed cooling of flux.From the crystal structure determination and spectioscopic study
it has been found that there exist two luminescent centers in this crystal