Modeling and Analysis of the Effect of Current-Voltage in the Solar Cell Dynamic Parameters

Abstract

AbstractThe new type of solar cells such as thin-film, dye-sensitized, organic, and multi-junction solar cells are increasingly being used in various fields. The current-voltage, capacitance-voltage characteristics, transition, and diffusion capacitance parameters under conditions of reverse and forward bias are reported in modern technologies. Furthermore, the knowledge of AC parameters behavior of solar cells in dynamic regime differs from one of the monocrystalline or polycrystalline solar cells. The dynamic equivalent circuit model of the solar cell is required to describe the impedance for AC through the solar cell. In the present study, we analyze the transition and diffusion capacitance of solar cell parameters in a dynamic model. Moreover, the experimental values of diffusion and transition capacitance will be compared with the theoretical expression of each parameter. The equivalent impedance of the electric circuit will be determined and discussed. In the end, the obtained results of BSR, BSFR silicon solar cell, and GaAs/Ge solar cell is dominant up to 0.9 V, and beyond 0.9 V diffusion capacitance is significant.KeywordsSolar cellDynamic regimeAC parametersImpedance spectroscopyBias voltage