Effects of Prolonged Heat Exposure on the Performance Characteristics of Monocrystalline Silicon Photovoltaic Cells

Solar energy is a rapidly growing field of study since alternative energy sources, especially those that are renewable and economically feasible, are highly sought after. Silicon photovoltaic cells are the most commonly used type of cell, yet limitations in their efficiency place a restraint on overall effectiveness. The objective of this research was to observe the effects on the performance characteristics of monocrystalline silicon photovoltaic cells after being exposed to high temperatures for fixed periods of time. In particular, we examined the open-circuit voltage, V_oc, and short-circuit current, I_sc. To observe these changes, the cells were heated at temperatures ranging from 200^o C to 280^o C for a duration of 20 minutes. An analysis of various IV curves was used to determine changes in performance characteristics of the cells exposed at different temperatures. Our study revealed that this heat exposure yielded a permanent alteration in the performance of the cell. Ultimately, this exposure led to an increase in the overall performance of the monocrystalline silicon photovoltaic cell. Such an increase in performance occurred with existing cells, requiring no significant changes to the manufacturing process.