Performance of the non-fitting methods (polar approach in black, moments method in blue and <i>mf<sub>D</sub></i> in red) as a function of the number of temporal channels for <i>N</i> = 1000 photons (time gated simulations).

<p>We have considered three fractions of interacting donor <i>f<sub>D</sub></i>: 0.25 (A), 0.5 (B) and 0.75 (C). <i>τ<sub>F</sub></i> and <<i>τ></i> are reported in the right part whereas <i>f<sub>D</sub><sup>P</sup>, f<sub>D</sub><sup>M</sup></i> and <i>mf<sub>D</sub></i> are indicated in the left. For each condition, the dotted lines represent the simulated values and the markers with error bars represent the corresponding medians and interquartile ranges of 4096 simulated histograms with parameters: <i>τ<sub>F</sub></i> = 1.5 ns and <i>τ<sub>D</sub></i> = 2.5 ns.</p>