Introduction Sun has always been regarded as the key energy source for humanity since ancient times. The colossal energy and material reserve are able to supply light and warmth for millions of years, and the aim of humanity is to study how to use this energy wisely. Silicon cells that are also called solar cells are applied in various spheres of human life. The photovoltaic effect is aimed at transforming sunlight into electricity. Various silicon compounds are used for creating solar panels; these are monocrystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper indium selenide/sulfide (Lynn, 2010). The future of solar energy is regarded as the opportunity to deliver sunlight-generated electricity to every house and every industrial object, while contemporary technology presupposes low-efficiency output, and, regardless of the quick technological development, the dream of cheap and available electricity stays nothing more than a dream. Solar Energy Usage As it is stated in Goetzberger and Hoffmann (2005), the photovoltaic effect was first discovered by French physicist Becquerel. He noted that sunlight carries energy that may be converted into electricity. However, the first solar cell was invented in 1883 by Charles Fritts. He used the junction of gold and selenium, however, the efficiency of the construction was only 1%. Silicon was first used by Russian physicist Stoletov in 1905. As the effectiveness was essentially larger in comparison with Fritt’s experiment, silicon became the key component for photovoltaic cells. Actually, this is explained by the statement that silicon has the optimal atomic structure, and is sensitive to sun radiation. However, certain alternatives are also used for increasing the effectiveness of the constructions and junctions. Hence, the actual importance of these alternatives is explained by using various components for improving silicon and non-silicon constructions. The key principle of the process is explained in Pachauri and Abeyratne (2000, p. 521): Electrons are ejected from a material’s surface upon exposure to radiation of sufficient energy. The photovoltaic effect is different in that the generated electrons are transferred between different bands (i.e. from the valence to conduction bands) within the material, resulting in the buildup of a voltage between two electrodes. Hence, the requirements to the atomic structure presuppose the existence of free electrons in atoms and the abilities for semiconducting. Hence, if sunlight affects the surface, the free-electron should be released from the atom, and transmitted to a conductor (electrode), for the electron did not have an opportunity to come back, the semiconductor is used, where the p-n junction is used. Technical Process The key difference factor of the solar cells is the material and technology that is used. Hence, the output parameters change, as well as the efficiency coefficient. First, it should be stated that the energy is transformed from the visible sunlight, and the technical features of the process are explained in Lynn (2010, p. 310): Many currently available solar cells are made from bulk material that is cut into wafers between 180 to 240 micrometers thick that are then processed like other semiconductors. Other materials are made as thin-films layers, organic dyes, and orga