Ver artículo

The temperature dependence of open-circuit voltage (V_oc) and curve factor (CF) of a silicon solar cell has been investigated in temperature range 295–320 K. The rate of decrease of V_oc with temperature (T) is controlled by the values of the band gap energy (E_g), shunt resistance (R_sh) and their rates of change with T. We have found that R_sh decreases nearly linearly with T and its affect on dV_oc/dT is significant for cells having smaller R_sh values. Series resistance also changes nearly linearly with voltage. CF depends not only on the value of R_s and other parameters but also on the rate of change of R_s with voltage. The rate of decrease of R_s with voltage and T are important to estimate the value of CF and its decrease with temperature accurately.