![]() ![]() The point is that electrons and holes were carried away from the area where they formed as quickly as possible, yes to prevent their spontaneous recombination. These processes are destructive from the point of view of photovoltaics and should be minimized, which is achieved thanks to the spatial separation of electrons and holes. The reverse processes also take place in the system, i.e. This field inhibits further separation of cargo. Besides, electrons and holes generally diffuse with different velocities, which leads to the creation of a separated space charge and generation of an electric field (sometimes called the Dember field). The illumination of the material, in general, is not uniform, which leads to the appearance of spatially inhomogeneous charge in the band valence and conductivity. Absorption of a quantum of the energy of light (photon) generates the appearance of an electron in the conduction band and holes in the valence band. ![]() The essence of the photovoltaic effect is the generation of electric current with the help of light. ![]()
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