Table 2.

Molecular Oxygen Affects Photocurrent Dynamics

Condition	Fitting Equation	Bias	Time Constant
ITO/P3HT/PB	y = A1∗exp(-x/t1) + y0	VOC versus Ag/AgCl	t1 = 2.51 ± 0.33 s
		VOC– 100 mV versus Ag/AgCl	t1 = 3.20 ± 0.001 s
ITO/P3HT/PB:CytC	y = A1∗exp(-x/t1) + A2∗exp(-x/t2) + y0	VOC versus Ag/AgCl	t1 = 9.37 ± 0.68 s t2 = 1.042 ± 0.22 s
		VOC– 100 mV versus Ag/AgCl	t1 = 15.38 ± 0.007 s t2 = 1.529 ± 0.002 s

Fitting time constants for chronoamperometries carried out in controlled nitrogen atmosphere. As in the case of exposure to oxygen dissolved in the buffer, current signals recorded in ITO/P3HT/PB and ITO/P3HT/PB:CytC samples are fitted with a single and double exponential curve, respectively, both in open circuit condition and upon negative bias. Decay time constants are reported as mean ± SD.