Dye-Sensitized Solar Cells (DSSCs) have emerged as a promising alternative to conventional photovoltaic technologies due to their low production costs, simple fabrication process, and potential compatibility with flexible substrates. However, the requirement for high-temperature treatment, typically in the range of 450–500°C, significantly reduces the materials that could be used as substrate for the electrodes. In fact the materials that are flexible and transparent are usually polymers, characterized by a low thermal resistance, around 100°C. Above this, colorless polymide emerges as higly flexible and transparent material that can resist temperatures up to 330°C, being suitable to be tested as a possible alternative to conventional rigid materials.