Abstract
Low-cost dye-sensitized solar cells (DSSCs), which offer a clean and renewable energy source, have attracted considerable attention.
However, cell efficiency and performance stability remains a primary concern. The photovoltaic performance of DSSCs is significantly
affected by both light intensity and operating temperature. In order to maintain the optimum operating conditions for DSSCs in practical
application environments, it is important to understand the combinational effects of light intensity and operating temperature on their
characteristic behaviors. In this work, we systematically investigate the conditions for satisfactory photovoltaic performance of DSSCs in
various light-intensity and temperature environments. At light intensities lower than 1-Sun condition (i.e. 100 mW cm2), the PCE of DSSCs is stably maintained at elevated temperatures ranging from 4 to 60 C due to the increased
concentration of photogenerated electrons, which compensate for the loss of electrons by charge recombination between photogenerated
electrons and liquid electrolyte ions.