fig8

Figure 8. (A) The emission spectra of ZnS:2%Ag samples containing 0.1%, 0.2%, 0.5%, and 1.0% Mn excited by 355 nm laser pulses with duration of 1 ns and 10 kHz repetition rate; (B) Emission decay curve for ZnS:2%Ag:1%Mn recorded with 450 nm observation wavelength at a 20 Hz repletion rate; (C) Emission decay curve for ZnS:2%Ag:1%Mn recorded with an observation wavelength of 590 nm and a 10 Hz repetition rate; (D) Dependence of the emission decay at 590 nm on the level of Mn doping. Measurements are done at a 10 Hz repetition rate.