Fossil Fuels Can't Win Against New Perovskite-Silicon Solar Cells

The article highlights the significant advancements in perovskite-silicon tandem solar cells, which are emerging as a lower-cost, higher-efficiency alternative to traditional silicon solar cells. Perovskite materials, once considered fragile and difficult to produce, have been successfully integrated with silicon to create tandem cells that surpass the Shockley-Queisser limit of 33.7% efficiency for single-junction cells. Notably, Chinese firm LONGi has reported record-breaking efficiencies approaching the theoretical tandem limit of 43%, signaling strong commercial potential. Researchers at Hong Kong Polytechnic University (PolyU) emphasize that while efficiencies near 35% have been achieved in the lab, challenges remain in scaling up production, improving long-term stability, and ensuring manufacturability aligns with industrial standards. PolyU’s recent study in Nature Photonics outlines strategic recommendations to bridge the gap between current efficiencies (~34%) and the theoretical maximum (~40%), focusing on enhancing operational stability and scalability. Professor Li Gang stresses the importance of minimizing