SrAl12O19:Ce0.093+, Eu0.012+ 형광체에서 청색발광의 에너지 전이에 관한 연구

A Study of Energy Transfer in the Blue Emitting Fluorescence of SrAl12O19:Ce0.093+, Eu0.012+ Phosphor

  • 김광철 (한국기술교육대학교 교양학부 물리전공) ;
  • 최진수 (국방과학연구소)
  • 투고 : 2019.02.22
  • 심사 : 2019.03.17
  • 발행 : 2019.03.31

초록

The blue emitting fluorescence of $SrAl_{12}O_{19}:Ce_{0.09}{^{3+}}$, $Eu_{0.01}{^{2+}}$ phosphor includes two kinds of independent energy transfer mechanism through electric multipole interactions between donor and acceptor ions. The first energy transfer takes place between the $Ce^{3+}$ ion and the $Eu^{2+}$ion which strongly depends on the concentration $Eu^{2+}$ions. The second energy transfer occurs between the $Ce^{3+}$ ion and the $O_{Me}-Ce^{3+}$ complexes. Both energy transfer mechanisms of blue emitting peak at 410 nm were investigated by fitting of Gaussian functions. The result shows that the peak at 410 nm is two overlapping emissions originated by $Eu^{2+}$ions and $O_{Me}-Ce^{3+}$ complexes and as time elapses $Eu^{2+}$peak remains whereas $O_{Me}-Ce^{3+}$ related peak disappears.

키워드

참고문헌

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