Abstract
A novel elastic mechanoluminescence (EML) material Zn2(Ge0.9Si0.1)O4:Mn is reported to exhibit weak persistent luminescence (PL), a dynamic compressive load in the 300–2800 N range, and a nearly perfect linear response. The PL and EML spectra indicate that the EML and PL emissions originate from the 4T1 → 6A1 transition of Mn2+. The thermoluminescence properties reveal the existence of three types of traps. The shallowest trap responsible for a fast decay afterglow may contribute little to the EML. On the other hand, the other two, deeper, trap types, underlie EML.
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