Researchers have developed an integrated opto-electro-thermal model that allows for the simultaneous analysis of power conversion efficiency and heat generation in perovskite solar cells. This advancement is crucial because the long-term stability and performance of these cells, promising due to their high efficiency, are significantly affected by operating temperature. Until now, studies tended to treat these aspects separately, hindering a global optimization of the devices. The new approach provides a more comprehensive tool to understand how design and materials influence both interconnected factors.

The model combines optical simulations to determine light absorption and carrier generation, electrical simulations to calculate the resulting current and voltage, and thermal simulations to predict temperature distribution within the device. This integration allows for identifying regions where more energy is dissipated as heat, as well as quantifying how this heat affects electrical properties and, consequently, efficiency. The ability to predict these phenomena in a coupled manner is fundamental for designing more stable and efficient cells, especially under real operating conditions where temperature can vary considerably.

The model's results reveal that a joint optimization of optical, electrical, and thermal parameters can lead to substantial improvements. For example, the study can guide the selection of materials with better thermal conductivity or the modification of layer architectures to dissipate heat more effectively without compromising light absorption or charge extraction. This type of predictive analysis is essential to accelerate the development of the next generation of perovskite solar cells, bringing them closer to large-scale commercialization with the required reliability and durability.