Antimony Selenide Boosts Efficiency in Tandem Solar Cells

• Revolutionary tandem solar cell combines antimony selenide and perovskite for over 20% efficiency. Exciting advancements in renewable energy technology on the horizon!

Researchers have successfully developed a tandem solar cell using antimony selenide (Sb2Se3) as the bottom cell material and a wide-bandgap perovskite material for the top cell, achieving a power conversion efficiency of over 20%. Antimony selenide, with a band gap of 1.05–1.2 eV, shows promise for bottom-cell applications in tandem solar cells due to its stability and nontoxic composition.

The team optimized the spectral response of the tandem solar cell by adjusting the thickness of the transparent electrode layer in the top cell, resulting in efficiencies of 17.88% for the perovskite top cell and 7.85% for the antimony selenide bottom cell. Future research aims to further improve device performance and develop a more integrated two-terminal tandem solar cell.

How did researchers achieve over 20% efficiency with tandem solar cells using antimony selenide?

Researchers achieved over 20% efficiency with tandem solar cells using antimony selenide by combining it with a wide-bandgap perovskite material for the top cell.

• The team optimized the spectral response of the tandem solar cell by adjusting the thickness of the transparent electrode layer in the top cell.
  
• This optimization resulted in efficiencies of 17.88% for the perovskite top cell and 7.85% for the antimony selenide bottom cell.
• Future research aims to further improve device performance and develop a more integrated two-terminal tandem solar cell.