Researchers at the Ningbo Institute of Materials Technology and Engineering of the Chinese Academy of Sciences have achieved a significant breakthrough in developing next-generation perovskite solar cells. Scientists managed to push the efficiency of rigid tandem cells beyond the 30 percent psychological threshold. This was reported by Ixbt.com reports .
To achieve this milestone, a special chemical additive system based on Lewis acid-base theory was utilized. This method allowed for the synchronization of crystal formation in perovskite layers, reducing defects and ensuring structural stability.
As a result, the rigid monolithic tandem solar cell recorded a certified power conversion efficiency (PCE) of 30.3 percent. The flexible version showed a result of 28.0 percent. For comparison, before optimization, these figures were 20.1 and 23.3 percent, respectively.
Researchers also paid special attention to the durability of the devices. The rigid element retained 92 percent of its efficiency after 1,000 hours of continuous operation. The flexible version demonstrated over 95 percent efficiency even after 10,000 bending cycles.
The new technology is expected to be widely used in flexible electronics, lightweight autonomous power sources, and portable solar systems in the future. The developers believe this crystallization control method will become a universal solution for creating even more efficient solar cells.
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