Energy-dependent rate of CT state formation calculated for constant (blue dashed line) and energy-dependent (solid blue line) electron and hole mobilities. The red lines show the corresponding CT emission spectra that result from convolving these distributions with the homogeneous CT state lineshape discussed in the text. In this model, the CT state distribution (which is directly proportional to the formation rate) accounts for 12% of the full-width half-max emission linewidth, while the balance is due to homogeneous broadening from Equation6. The details of each contribution, as well as a summary of all the model parameters, are provided in the Supplementary Material.
