FU Xiao-yan, FANG Li-jun, FU Hai-xia, ZHANG Hong-wu. Ultraviolet Mechanoluminescence from SrMgSi<sub>2</sub>O<sub>6</sub>:Ce[J]. Chinese Journal of Luminescence, 2013,34(8): 1006-1010
FU Xiao-yan, FANG Li-jun, FU Hai-xia, ZHANG Hong-wu. Ultraviolet Mechanoluminescence from SrMgSi<sub>2</sub>O<sub>6</sub>:Ce[J]. Chinese Journal of Luminescence, 2013,34(8): 1006-1010 DOI: 10.3788/fgxb20133408.1006.
solid state reaction. The XRD results indicate that the structure of SrMgSi
2
O
6
is identical to that of Sr
2
MgSi
2
O
7
which has a tetragonal symmetry with a space group
P
421
m
.The emission bands of three samples are similar
which consist of a broad band with two peaks centered at 349 and 371 nm
caused by the f-d electron transition of Ce
3+
ions. The ML results show that the ML intensities of these samples are well depended on the stress
indicating that these ML materials can be potentially used as sensors to detect the stress distribution of an object. Furthermore
the ML intensity of SrMgSi
2
O
6
:Ce
0.005
Er
0.015
is obviously higher than those of SrMgSi
2
O
6
:Ce
0.005
and Sr
2
MgSi
2
O
7
:Ce
0.005
Er
0.015
. The obtained results suggest that the trap and the worse symmetry of crystal structure are responsible for the higher ML intensity of SrMgSi
2
O
6
:Ce
0.005
Er
0.015
. Because of the UV emission of this material
it can be used as the excitation source to irradiate other color phosphors and then the various colors ML can be realized.
关键词
Keywords
references
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