Finding the electrical circuit that requite the photovoltaic solar cell in imaginary resistance and studying the cell in the static and dynamic state

摘要

In this work , we prove that photovoltaic solar cell can be represented by electrical circuit in the imaginary resistance and this happens by finding this circuit. After that we study the solar cell in the static state (i.e the volt-amper characteristic in the light and the volt-amper characteristic like a diod in the dark in laboratory temperature degree and in many other temperature degrees , by these curves we can find the potential hill Ψ(ev)) , then we study the solar cell in the dynamic state by phase gain analyzer (enter field of frequency [1Hz - 20 x 10~3Hz] in the solar cell and calculate the imaginary resistance by using the gain values from the analyzer ,then draw X_((ω)) = f(R(ω) and from this studying we can find the relaxation time τ_p sec , amplitude of storing capacitator C_p F ,leak resistance R_p 0hm, bulk resistance to cell R_b Ohm , coefficient of unhomogeneity ( goodness coefficient) β, activation energy E(ev) , charge carrier density N_d cm~(-3) , electronic hunt density (surface states density ) N_s cm~(-3) , energy level ev.