Technology
Perovskite–Silicon Tandem Solar Cells for High-Efficiency Photovoltaics
Quick fact
Perovskite–silicon tandem cells have achieved efficiencies above 30% in the lab, surpassing the theoretical maximum for single-junction silicon cells (about 29%).
Why this is interesting
You've seen silicon solar panels on rooftops, but what if we could squeeze more power from the same sunlight? Scientists have found a way to stack two different materials to capture more of the sun's energy—boosting efficiency beyond what silicon alone can achieve.