Influence of H3BO3 addition on mechanoluminescence property of SrAl2O4:Eu2+

Dong TU; Chao-Nan XU; Ryoji SAITO; Linsheng LIU; Akihito YOSHIDA

doi:10.2109/jcersj2.17090

Technical reports

Influence of H₃BO₃ addition on mechanoluminescence property of SrAl₂O₄:Eu²⁺

Dong TU, Chao-Nan XU, Ryoji SAITO, Linsheng LIU, Akihito YOSHIDA

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Keywords: Mechanoluminescence, Elastico-luminescence, SrAl₂O₄:Eu²⁺, H₃BO₃, Traps

JOURNAL FREE ACCESS

2017 Volume 125 Issue 8 Pages 648-651

DOI https://doi.org/10.2109/jcersj2.17090

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Abstract

Eu-doped strontium aluminates (SrAl₂O₄:Eu²⁺) has been attracting attention as a highly potential mechanoluminescent (ML) material in a wide range of applications such as visualization of stress distribution for the concretes, steel materials, etc. In this study, we examined the single effect by the addition of flux, boric acid (H₃BO₃), in the synthesis process for the improvement of the ML intensity of SrAl₂O₄:Eu²⁺. Crystal structure, photoluminescence and ML properties were examined at various H₃BO₃ concentrations. It was found that the addition of H₃BO₃ provided 2.5 times improvement of ML intensity. This is probably due to the increase in the trap concentration.

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