Revolutionary T2 Material Boosts Perovskite Solar Cell Efficiency

• Revolutionary perovskite solar cell with T2 material achieves record efficiency and stability, outperforming traditional materials. Scalable production and improved performance make it a game-changer in renewable energy.

Researchers from Tsinghua University, Zurich University of Applied Sciences, and University of Ferrara have developed a perovskite solar cell using a new hole transport material called T2, which offers improved efficiency and stability. The cell was fabricated using thermally evaporated perovskite films, allowing for scalable production. The T2 material, made from thiomethyl-substituted fluorene and spiro-[fluorene-9,9′-xanthene], showed better performance than traditional materials like spiro-OMeTAD.

The perovskite solar cell achieved a record efficiency of 26.41% with T2 as the hole transport layer, compared to 24.43% with spiro-OMeTAD. The T2-based cell also demonstrated better stability under various conditions, attributed to suppressed ion migration and improved energy level alignment. The researchers were able to identify the atomistic origin of the improved hole extraction, leading to the development of a mini solar module with an efficiency of 21.45%.

What new hole transport material has improved efficiency and stability in perovskite solar cells?

• The new hole transport material called T2, made from thiomethyl-substituted fluorene and spiro-[fluorene-9,9′-xanthene], has improved efficiency and stability in perovskite solar cells.
• The T2 material showed better performance compared to traditional materials like spiro-OMeTAD.
• Perovskite solar cells using T2 achieved a record efficiency of 26.41%, higher than cells using spiro-OMeTAD which achieved 24.43%.
• The T2-based cell demonstrated better stability under various conditions, attributed to suppressed ion migration and improved energy level alignment.
• Researchers were able to identify the atomistic origin of the improved hole extraction, leading to the development of a mini solar module with an efficiency of 21.45%.