## 4 Discussion
Clonidine and substrate 1 also follows the classic genesis of surface morphology, as can be observed in Figure 4a-e. The morphology of clonidine on substrate 2 is significantly different. It has a spongy shape, and there is not even a hint of a circular-type cell structure, see Figure 4f-j. The deposition of clonidine on substrates 3 and 4 clearly show that the substrate controls not only the surface morphology, but also the rate of its deposition. Thus, a 20 min deposition on substrate 4, Figure 4q, and a 40 min deposition on substrate 3, Figure 4m, form a similar morphology as the 60-min deposition on substrate 4, Figure 4s, and 90 min deposition on substrate 3, Figure 4o, which also form a similar morphology. Moreover, only substrate 4 gives the morphology of the globular type after 90 min of deposition, as shown in Figure 4t. The worst morphology on the substrates 1-4 was displayed by the deposition of vitamin B12. If on substrates 1, 3, and 4 the formation of a circular-type cell structure can still be observed, for example, Figure 5a,k,t, then on substrate 2, the vitamin B12 layer is practically absent, as can be seen in Figure 5f-j. The analysis of carbon substrate effects on thin film self-organization of sulfacyl sodium, clonidine, and vitamin B12, showed a sharp difference between substrate 2 and the other substrates. This substrate suppresses the ability of self-organization for all three investigated heterocyclic amines. Regarding the differences in the effects of these three heterocyclic amines on morphology formation, as can be seen from Table 1, the main differences in the chemical structures of the considered heterocyclic amines are the different number of benzene rings: one in sodium sulfacyl with a net morphology, two in clonidine, and at least four in vitamin B12. It is the increase in the number of rings that possibly leads to the formation of a net morphology, especially at short periods of deposition. Thus, after 20 min of sedimentation, sulfacyl and clonidine already form such a morphology, Figure 3b,g,l,q, Figure 4b,l,q, while vitamin B12 forms it only after the film deposition in 60-90 min, Figure 5e,n,s. By summarizing the investigated morphological properties of heterocyclic amines, namely, sulfacyl sodium, clonidine, and vitamin B12, it is possible to order the sequences of carbon substrate activity in the ability to self-organize the organic films as 1-3-4-2. Very likely, large forms do not facilitate the self-organization process. The study of electrophysical characteristics and parameters of the prepared hybrid composites is very important for the future formation of solar cells on these hybrids. It was established that CVCs depend fundamentally on the properties of the substrate. There are two types of CVC behaviors: photosensitive and non-photosensitive. Examples of such behaviors are shown in Figures 6 and 7, respectively. The differences in CVCs are shown in Table 3. Usually, CVCs for hybrids formed on substrate 1 are photosensitive, Figure 5a. Table 3 shows data on the ratio of light to dark currents at the voltage of 0.1 V.  
Both sulfacyl sodium and clonidine have noticeable photosensitivity on substrate 1. The optimal deposition time of 20-40 min coincides with the time required for the formation of self-organized films on this substrate. At the same time, hybrids on substrate 2 do not show photosensitivity, Figure 7a. Hybrids on substrates 3 and 4 have intermediate values of photosensitivity and optimal values of the ratio of light to dark currents with the time of film formation in the range of 40 to 60 min. The least favorable situation is with vitamin B12. At the same time, the ratio of light and dark currents is significantly lower, but also