Development of new elasticoluminescent material SrMg2(PO4)(2):Eu

作者：Kamimura Sunao; Yamada Hiroshi; Xu Chao Nan^*

来源：Journal of Luminescence, 2012, 132(2): 526-530.

DOI：10.1016/j.jlumin.2011.09.033

• Elasticoluminescence
• Mechanoluminescence
• SrMg2(PO4)(2)

We have succeeded in developing a new elasticoluminescent (elastico-L) material SrMg2(PO4)(2):Eu (SMPE), which emits purple light clearly observable with the naked eye. SMPE can be synthesized at a firing temperature, which is several hundred degrees Kelvin lower than that for other materials of this group. Based on a comparison between elastico-L emission spectrum and photoluminescence spectrum, the emission was identified to be due to electron transition from an excited state 4f(6)5d(t) to the ground state 4f(7) in Eu2+ ions. While the emission gradually decayed as stress was applied repeatedly, it recovered completely upon irradiation with UV light (365 nm). This behavior, characteristic to elastico-L materials of the defect-controlled type, suggests that deep charge traps are involved in the emission process. In this paper, the elastico-L mechanism in SMPE is discussed in detail with reference to its thermoluminescence and electroluminescence spectra.

• 出版日期2012-2