A Korean research team has made significant progress in the field of perovskite solar cells. A novel solid-state additive called 4CP, jointly developed by researchers from Ulsan National Institute of Science and Technology (UNIST) and Korea University, has been applied to perovskite solar cells, significantly improving both their performance and durability.

Traditional perovskite solar cells typically rely on liquid additives to enhance efficiency. However, these liquid components tend to volatilize at high temperatures, potentially compromising the long-term stability of the devices. The new solid-state additive 4CP effectively addresses this issue. Its non-volatile nature helps maintain the structural stability of the materials and promotes more efficient charge transport.

Test results show that perovskite solar cells using this new solid-state additive achieved a power conversion efficiency of 26.2%. After continuous operation for more than 3,000 hours, these perovskite solar cells still retained over 80% of their initial efficiency. They also demonstrated excellent stability under harsh temperature cycling tests.

The research team stated: "This study provides a viable pathway to address the stability challenges of perovskite solar cells." The technology is compatible with existing manufacturing processes and offers support for the future commercial application of perovskite solar cells. The team's next step will focus on developing larger-area battery modules.