The 78th JSAP Autumn Meeting, 2017

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Poster presentation

13 Semiconductors » 13.9 Optical properties and light-emitting devices

[6p-PA9-1~26] 13.9 Optical properties and light-emitting devices

Wed. Sep 6, 2017 4:00 PM - 6:00 PM PA9 (P)

4:00 PM - 6:00 PM

[6p-PA9-7] The red long lasting phosphorescence (LLP) and crystal structure of (ZnxMg0.95-x)3(PO4)2:Mn2+0.05 phosphor

〇Kai Ikegaya1, Kazuteru Shinozaki1, Shigeki Yamada1 (1.Yokohama City Univ.)

Keywords:red long lasting phosphorescence, red photoluminescence, zinc magnesium phosphate phosphor

Mn2+ ion doped in divalent metal phosphate such as γ-Zn3(PO4)2 or Mg3(PO4)2 exhibits red phosphorescence (PL) and long lasting phosphorescence (LLP) derived from 4T1g → 6A1g transition. While LLP of γ-Zn3(PO4)2:Mn2+ was observed for sevral hours, the duration time of LLP from Mg3(PO4)2:Mn2+ was particularly short. To clarify the difference in LLP duration time, we prepared (ZnxMg0.95-x)3(PO4)2:Mn2+0.05 with various molar ratios of Zn2+ and Mg2+ and systematically investigated their PL and LLP properties in terms of crystal structure.