At NINGBO INNO PHARMCHEM CO.,LTD., our pursuit of cutting-edge materials for renewable energy extends to the burgeoning field of tandem solar cells. These devices, which combine different photovoltaic technologies to capture a broader spectrum of sunlight, promise significantly higher efficiencies than single-junction cells. A critical component in the successful integration of these technologies, particularly in perovskite/organic tandem solar cells (TSCs), is the interconnecting layer (ICL), which functions effectively as a cathode interlayer.

The development of materials that can not only facilitate efficient charge transfer between sub-cells but also withstand the processing conditions of the integrated layers is paramount. Recent advancements have introduced phenanthroline-carbolong derivatives, such as DPC, as highly effective cathode interlayers. These materials offer a unique combination of electronic properties and robust chemical stability.

One of the key advantages of DPC in TSC applications is its ability to enable thermal post-treatment of the organic sub-cell without compromising its integrity. This is a significant hurdle that has historically limited the performance and stability of tandem devices. By employing DPC as the ICL, researchers have successfully fabricated monolithic perovskite/organic tandem solar cells achieving a remarkable power conversion efficiency (PCE) of 21.7%. This efficiency was further supported by excellent thermal stability, maintaining 80% of its initial PCE after 90 hours at 85°C.

The success of DPC in these applications stems from its inherent stability and its minimal reactivity with the surrounding materials. This not only ensures the device's longevity but also contributes to a well-matched current between the perovskite top cell and the organic bottom cell. NINGBO INNO PHARMCHEM CO.,LTD. is proud to be at the forefront of supplying such innovative materials that are pushing the boundaries of solar energy conversion, making efficient and stable tandem solar cells a tangible reality.