Singlet Generation from Triplet Excitons in Fluorescent Organic Light-Emitting Diodes

Figure 4

Transient triplet absorption data set measured during and after a 1 ms optical (black) and electrical (green) electrical pulse as a function of time. The red and blue solid lines are least square fits according to (5); the cyan line according to (4). The dashed lines indicate the slopes obtained for this particular datasets. In the inset, the same data are replotted with a logarithmic time scale.