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제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Spectroscopic analysis of a new red emission mechanism in NaYF4:Yb3+, Er3+ phosphors using pulse modulation

등록일
2018년 2월 13일 13시 08분 11초
접수번호
5989
발표코드
PHYS.P-238 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 20일 (금요일) 11:00~12:30
발표형식
포스터
발표분야
Physical Chemistry
저자 및
공동저자
Youngho Cho, Lim SooYeong1, Chan Ryang Park*, Hyung Min Kim1,*
Department of Chemistry, Kookmin University, Korea
1Department of Bionano Chemistry, Kookmin University, Korea
Upconversion lanthanide phosphors have great potential to be used in various fields such as nanomedicine, solid 3D displays, nanoscale thermometry, and solar cell technology. Although the method of obtaining various colors through synthesis is well known in previous studies, the synthesis process has to go through several steps, it takes a lot of time and it is difficult to show a certain color. In order to overcome this problem, Xiaogang Liu and co-workers have presented a study to control the color of the upconversion material by controlling the laser pulse width. However, mechanism of green upconversion phosphors still has not been elucidated, including two-, three- and multi-photon process. In this study, we demonstrated a new red emission mechanism of NaYF4 : Yb3+, Er3+with modulated laser diode and accumulation effect of upconversion process.

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