Figure 2. Temperature-dependent PL characteristics of the PbS:Bi 0.5% film from Series A.
Triple-Gaussian fitting of the PL spectra from the film at 78 K (a), 270 K (b), 350 K (c). (d) Integrated PL versus excitation power for the three PL components, (e) Arrhenius plot and calculated activation energies for the Gaussian components of the PL spectra.