Samples of CdS with different activators i.e. Cu, Mn, Ag and Au are prepared with the activator concentration 4 X 10-3 gm/gram of CdS, NaCl was used as co activators. The heat treatments of these phosphors have been carried out in an atmosphere of purified nitrogen, at 9000 C for 45 minutes. The photoluminescent and mechanoluminescent characteristic of these phosphors have been studied. One emission bands (at 760nm, 750nm, 747 nm, and 760 nm) have been observed for CdS: Au, CdS: Mn, CdS:Ag, and CdS: Cu phosphors respectively. An ML spectrum of doped CdS is compared with that of their PL spectra
