This study focused on the performance characteristics of solar cell using the impedance technique. We measured an impedance according to frequency from 1 Hz until 1 MHz. It could know that the impedance was decreased according to the frequency increases in solar cell. The impedance of single crystal solar cell was 0.61 ${Omega}$ at 1 Hz, and kept almost settled value to $1{ imes}10^2$ Hz. However, the impedance of polycrystal solar cell was $7{ imes}10^3{Omega}$ at 1 Hz.