심광보
2017-11-22T02:15:21Z
2017-11-22T02:15:21Z
2016-02
JOURNAL OF CERAMIC PROCESSING RESEARCH, v. 17, NO 2, Page. 118-121
1229-9162
http://jcpr.kbs-lab.co.kr/file/JCPR_vol.17_2016/JCPR17-2/10.2016-011_118-121.pdf
http://hdl.handle.net/20.500.11754/31757
Yb3+/Er3+ co-doped polycrsytalline yttrium-aluminum garnet (YAG : Yb3+,Er3+) powders were synthesized by a flux (BaF2) assisted solid-state reaction method at low-temperature. The optimum condition of flux concentration and calcination temperature was investigated by the XRD analysis. Crystal structure and upconversion luminescent property of the synthesized YAG : Yb3+,Er3+ powder was analyzed as a function of Yb3+ concentration when concentration of Er3+ was fixed at 25.0 mol%. Under 980 nm excitation, YAG : Yb3+,Er3+ powder exhibited weak red emissions near 660 and 670 nm, and strong green UC emissions at 530 and 550 nm corresponding to the intra 4f transitions of Er3+ (F-4(9/2), H-2(11/2), S-4(3/2)) -˃ Er3+ (I-4(15/2). The Yb3+ 15 mol% doped YAG : Yb3+,Er3+ powder sample exhibited strongly shiny green emission. A possible UC mechanism for YAG : Yb3+,Er3+ depending was discussed in detail.
en
KOREAN ASSOC CRYSTAL GROWTH
BaF2 flux
YAG:Yb3+,Er3+
upconversion
Flux assisted low-temperature synthesis of YAG:Yb3+,Er3+ and its optical property
Article
2
17
118-121
JOURNAL OF CERAMIC PROCESSING RESEARCH
Kang, Suk Hyun
Ryu, Jeong Ho
Park, Cheol Woo
Park, Jae Hwa
Kim, Hyun Mi
Kang, Hyo Sang
Choi, Jae Sang
Jung, Joo Hyun
Choi, Bong Geun
Shim, Kwang Bo
2016002668
S
COLLEGE OF ENGINEERING[S]
DIVISION OF MATERIALS SCIENCE AND ENGINEERING
kbshim