First, we evidence an increase of the photocurrent of more than 200 % at 1.23 V vs. RHE for S1 compared to S2 sample. Second, we observe that the photocurrent values measured with both protocols are similar. This point was exhaustively discussed in a previous work and related to low transients that can be observed on the ON -OFF measurements, for annealing temperatures of more than 600 °C.