首页|Upgrade Mechanoluminescence by Sr~(2+) Substitution in CaAl_2Si_2O_8:Eu~(2+)

Upgrade Mechanoluminescence by Sr~(2+) Substitution in CaAl_2Si_2O_8:Eu~(2+)

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  • NETL
  • NSTL
  • Trans Tech Publications Ltd
Recently we demonstrated that CaAl_2Si_2O_8: Eu~(2+) showed novel strong mechanoluminescence (ML). In order to improve the mechanoluminescence intensity, we partly substituted the Ca~(2+) ions by Sr~(2+) ions. It was found that the ML intensity was enhanced about three times as great as the one of CaAl_2Si_2O_8: Eu~(2+) by substituting 40% of Ca~(2+) ions to Sr~(2+) ions. Furthermore it was revealed that the main peaks in XRD pattern shifted to lower angle side and the emission peak shifted to a short wavelength from 428 to 418 nm, indicating that the substitution resulted in the cell volume expansion and the change of luminescent color. Based on the results of thermoluminescence and electroluminescence measurements, the possible mechanisms for the improvement of ML intensity were proposed.

mechanoluminescenceCaAl_2Si_2O_8:Eu~(2+)thermoluminescencetraptrap depthelectroluminescence

Lin Zhang、Chao-Nan Xu、Hiroshi Yamada、Nan Bu

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Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan

Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga, Fukuoka 816-8580, Japan National Institute of Advanced Industrial Science and Technology (AIST), 807-1 Shuku, Tosu, Saga 841-0052, Japan CREST, Japan Science and Technology Agency (JST), Honcho 4, Kawaguchi, Saitama 332-0012, Japan

National Institute of Advanced Industrial Science and Technology (AIST), 807-1 Shuku, Tosu, Saga 841-0052, Japan

2010

10.4028/www.scientific.net/KEM.421-422.315

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.421/422
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