Abstract
In order to develop new bright phosphors with long-lasting mechanoluminescence(ML), we prepared Ga-doped ZnS:Mn and investigated the effect of additional Ga ion on the mechanoluminescent properties. Intense MLs were observed in Ga-doped ZnS:Mn phosphors. The ML spectra were shifted to a longer wavelength side by adding Ga ion to ZnS:Mn phosphor, and these shifts increased with increasing the concentration of Ga ion. The shifts in ML spectra of Ga-doped ZnS:Mn phosphors are smaller than those in the photoluminescence spectra.
