Enhancing Efficiency of Tandem Solar Cells with Unique Additive

• Revolutionary research enhances silicon/perovskite tandem solar cells with THTZ-H+ additive, achieving 33.7% PCE. A game-changer for renewable energy production.

Researchers from KAUST and Marmara University are working on improving silicon/perovskite tandem solar cells by minimizing crystal defects and film inhomogeneities in perovskite top cells. They have introduced methylenediammonium dichloride as an additive to the perovskite precursor solution, resulting in the incorporation of THTZ-H+ into the perovskite lattice upon film crystallization. The cyclic nature of THTZ-H+ enables a strong interaction with the lead octahedra of the perovskite lattice, improving device power conversion efficiency and phase stability under prolonged light and heat exposure.

The structure incorporating THTZ-H+ in the perovskite photo absorber achieved a 33.7% independently certified PCE for a device area of 1 square centimeter. This breakthrough could lead to more efficient and stable silicon/perovskite tandem solar cells, bringing us closer to harnessing the full potential of this technology for renewable energy production.

How is methylenediammonium dichloride improving silicon/perovskite tandem solar cells?

• Methylenediammonium dichloride is being used as an additive to the perovskite precursor solution in silicon/perovskite tandem solar cells.
• The additive results in the incorporation of THTZ-H+ into the perovskite lattice upon film crystallization.
• The cyclic nature of THTZ-H+ allows for a strong interaction with the lead octahedra of the perovskite lattice, improving device power conversion efficiency.
• The structure incorporating THTZ-H+ achieved a 33.7% independently certified PCE for a device area of 1 square centimeter.
• This breakthrough could lead to more efficient and stable silicon/perovskite tandem solar cells, bringing us closer to harnessing the full potential of this technology for renewable energy production.