The dependence of the dicyanoargentate(I) luminescence on the dopant concentration in [Ag(CN)2
-]/KCl
single crystals is reported. Three crystals with different Ag content have been studied. The photoluminescence
spectrum of the doped crystal that has the lowest silver content (0.17%) is dominated by a high-energy band
at ∼295 nm, while the spectrum with the highest silver content (4.3%) is dominated by a low-energy
luminescence band at ∼400 nm. The crystal with an intermediate Ag content (2.7%) shows strong emissions
from both the high-energy and low-energy bands. Time-resolved luminescence measurements indicate that
the excitation energy is transferred between different [Ag(CN)2
-]
n
oligomers and, thus, leads to the tunable
emission observed in the [Ag(CN)2
-]/KCl system. The mechanisms of the radiative and nonradiative processes
have been described by a kinetic model that describes the experimental lifetime and time-resolved data.