Researchers from KAUST and Fraunhofer ISE replaced spin-coating with blade-coating in a hybrid evaporation/blade-coating method to fabricate perovskite-silicon tandem solar cells. They achieved 27.8% efficiency and open-circuit voltages over 1900 mV. The two-step process involved evaporating inorganic components and blade-coating organic layers, enabling industrial scalability. The coating speed influenced the perovskite conversion rate but not layer thickness. Their work built on earlier experience with spin-coating and showed blade-coating could be transferred to scalable methods like slot-die coating. The study addressed challenges in moving from lab-scale spin-coating to mass production of high-efficiency tandem solar cells.