반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

SrAl12O19: Cex3+, Eu0.012+에서 시간분해 Photoluminescence을 이용한 청색발광에 관한 연구

A Study on the Blue Emitting SrAl12O19: Cex3+, Eu0.012+ Using Time-resolved Photoluminescence

  • 김광철 (한국기술교육대학교 문리HRD학부 물리학전공) ;
  • 최진수 (국방과학연구소)
  • 투고 : 2016.05.30
  • 심사 : 2016.06.22
  • 발행 : 2016.06.30
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초록

$SrAl_{12}O_{19}:Ce_x{^{3+}}$,$Eu_{0.01}{^{2+}}$ phosphors were synthesized through a combustion process and their optical properties were investigated using time-resolved photoluminescence. A PL spectrum showed two dominant peaks which appeared at 300 and 410 nm. It is seen that, as the $Ce^{3+}$ concentration increases, the intensity of 300 nm decreases and the intensity of 410 nm increases. This behavior has been explained by two independent energy transfer mechanism. The first energy transfer occurs from $Ce^{3+}$ ion to $Eu^{3+}$ ion. The second energy transfer takes place from $Ce^{3+}$ ion to $Ce^{3+}-O_{ME}$ complex created in the magnetoplumbite structural host materials. The blue emitting 410 nm peak has been explained by both energy transfer mechanisms.

키워드

참고문헌

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