In this study of the phosphor utilizing a scallop shell, it was researched that the luminescence center was estimated from the chemical composition of the shell for the final purpose of the improvement of the luminescence property. The luminescence centers were estimated to be Cu and Mn from the experiment result and literature investigation. Furthermore, these concentrations were small by more than two orders in comparison with the commercially available phosphors. Therefore, improvement of the luminescence property can be expected by doping Cu and Mn to the shell and to investigate the relationship between these concentrations and the luminescence property to find the optimum concentration.
