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|
| Type |
Poster Presentation |
| Area |
Physical Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
PHYS.P-238 |
| Subject |
Spectroscopic analysis of a new red emission mechanism in NaYF4:Yb3+, Er3+ phosphors using pulse modulation |
| Authors |
Youngho Cho, Lim SooYeong1, Chan Ryang Park*, Hyung Min Kim1,*
Department of Chemistry, Kookmin University, Korea
1Department of Bionano Chemistry, Kookmin University, Korea
|
| Abstract |
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. |
| E-mail |
0505@kookmin.ac.kr |
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121st General Meeting of the KCS