Fig. 6. SERS spectra of p-ATP recorded from four different SERS substrates (a–d) with varying morphology of PV systems (according to parameters described in Table 1). Experimental conditions: 5 mW of 785 nm excitation, 2 × 2 seconds acquisition time. Insert presents the normal Raman spectrum p-ATP in neat solid state. Each SERS spectrum was averaged from forty measurements in different places on the SERS surface.
