Fig. 3
Time resolved photoluminescence at room temperature. a Time-resolved emission decay of F8BT solution in p-xylene. The inset shows time-resolved PF in F8BT solution. The dotted line is a guide to the eye to show the nature of power-law decay. The solid red line is bi-exponential fit to experimental data for DF1 and DF2. b Time-integrated DF vs. PF intensity derived for F8BT solution at DF1 (at time delay ~200 ns) and DF2 (at time delay~10 μs) regions, respectively, the solid line is linear fit to data for different fluence range. c Time-resolved emission decay in F8BT neat solid film containing low (30 μJ/cm2, solid green square) and high (570 μJ/cm2, solid blue circle) laser fluence. At low fluence, DF decays exponentially (red solid line) whereas at high fluence it has power law decay (red solid line). d The time-integrated PF and DF intensity vs. laser fluence plots for F8BT solid film, linearly fitted with dual slopes
