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The Effect of Quenching Concentration of Fe3+ in LiAl5O8:Fe3+ Prepared by Sol-gel Method

등록일
2009년 8월 14일 15시 34분 01초
접수번호
1210
발표코드
34P220포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅰ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
Abhijit Pandurang Jadhav, Amor Uttaam Pawar, Umapada Pal, 강영수
서강대학교 화학과, Korea
The nanoparticles of LiAl5O8:Fe3+ were synthesized by sol-gel method. The concentration of dopant Fe3+ was varied between 0.00025 mol to 0.006 mol to study the effect on optical properties as well as particle size. The optical properties of LiAl5O8:Fe3+ at various concentration of activator was studied at room temperature. The decrease in luminescence intensity was observed with increase in dopant concentration which corresponds to quenching concentration phenomenon. The quenching process between Fe3+ ions is determined and the critical quenching concentration of Fe3+ inLiAl5O8:Fe3+ was found to be 0.0005 mol. The luminescence peak at 709.8 nm corresponds to 4T1(4G)-6A1(6S) transition shows that the synthesized material is red phosphor with highly crystalline nature. The nanoparticles formed were highly crystalline with uniform size distribution.

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