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 Tare important to estimate the value of CF and its decrease with temperature accurately. (C) 2008 Elsevier B.V. All rights reserved.