These indicators include crystallites and geometric dimensions of the plates. It is known that more than 90% of modern solar cells are made of the base of single- and multi-crystalline silicon. For possible shock absorption of solar cells, it is advisable to use silicon wafers as thin as possible. When the thickness of the silicon is small, the transmission of sunlight through the silicon wafers increases. Various innovative technological and design solutions were offered to store a large number of absorbed photons in a thin silicon base of solar cells (SCs). In this work, “CASTEP” and “Sentaurus TCAD” software packages have been used to model deformed silicon and solar cells respectively. An experimental study of the main photovoltaic characteristics of solar cells of various shapes and sizes based on single- and poly-crystalline silicon was carried out. “Sinton Instrument Suns-Voc” and “Zolix” devices were used to measure “I-V” and “I-λ” characteristics of solar cells. Based on the results, the followings are concluded. A nonlinear dependence of the short-circuit current of the solar cell on the dimensions of the silicon wafers was established. The gradual influence of the shape of silicon wafers on the short-circuit current of the SC is interpreted as the contribution of regional recombination of charge carriers. The local deformation can be used to increase efficiency of crystal silicon solar cell. Multi-crystalline silicon wafers have a greater potential of application on producing highly sensitive photovoltaic-mechanical pressure detectors.