Perovskite solar cells are hailed as the ideal choice for the next generation of solar cells due to their high efficiency and low cost. However, a major problem with this type of cell is its performance degradation under reverse bias conditions. Reverse bias refers to the situation where the voltage direction is opposite to the normal operating direction when the battery is running. In this case, the performance of perovskite solar cells drops significantly.

To solve this problem, scientists used silicon solar cells and perovskite solar cells in series. Silicon solar cells are very stable under reverse bias conditions and therefore act as a "protective layer" to prevent performance degradation of perovskite solar cells.

The key to this technology is that scientists successfully solved the energy level matching problem between silicon solar cells and perovskite solar cells. This means that both types of cells perform optimally when the cells are operating under normal operating or reverse bias conditions.

One of the main contributors to this research, energy materials scientist Dr. Stable solar cells. This will open up new paths for the development of solar technology."

Although this technology has achieved an important breakthrough, the scientists said that further research and improvements in areas such as processing technology and effective ion-blocking barrier layers are needed to improve the reverse bias resiliency of perovskite single-junction cells.

The results of this research have been published in renowned international scientific journals. Scientists hope that this new type of perovskite-silicon tandem solar cells can be widely used in future solar devices, bringing more convenience and environmental benefits to our lives.