Polycrystalline solar cells electrical characteristics forecasting based on their degradation models

In this paper we present the results of accelerated tests B class based solar cells. It is established that the self-similarity of the experiment is observed at temperatures up to 150–160$^\circ$ C and lighting levels up to 2000 W/m$^2$. During over 168 h of accelerated testing the relative degradation of efficiency was 5,8%. The pattern of degradation of the duty cycle ($ff$) and short-circuit current ($I_{sc}$) of the solar cells at the initial and final time points of the tests is established.