Optimizing Triple-Junction Solar Cells: Efficiency Roadmap Revealed

• Unlocking the potential of triple-junction solar cells with cutting-edge optical properties, achieving 44.3% efficiency and 90.1% fill factor. A game-changer in solar technology.

Researchers from the University of Freiburg and Fraunhofer ISE have developed a roadmap for the optical properties of perovskite/perovskite/silicon triple-junction solar cells. These cells have a potential efficiency of 44.3% and a fill factor of 90.1%. The researchers used a comprehensive optoelectrical simulation model to improve the optical properties of these solar cells by adjusting perovskite absorber thicknesses, bandgaps, interlayer thicknesses, and employing a fully textured cell.

The scientists utilized the Sentaurus TCAD simulator to accurately describe the optical properties of the triple-junction solar cells. By optimizing the thicknesses of the absorbers and interlayers, as well as adjusting bandgaps, they were able to increase the photocurrent of all three cells and achieve a power conversion efficiency of 44.3%. The researchers emphasized the importance of choosing thicker perovskite layers with higher bandgaps to maximize the open-circuit voltage potential of the top cell.

How did researchers improve optical properties of perovskite/silicon triple-junction solar cells?

• Researchers from the University of Freiburg and Fraunhofer ISE developed a roadmap for the optical properties of perovskite/perovskite/silicon triple-junction solar cells.
  
• The cells have a potential efficiency of 44.3% and a fill factor of 90.1%.
• A comprehensive optoelectrical simulation model was used to improve the optical properties of the solar cells by adjusting perovskite absorber thicknesses, bandgaps, interlayer thicknesses, and employing a fully textured cell.
  
• The scientists utilized the Sentaurus TCAD simulator to accurately describe the optical properties of the triple-junction solar cells.
• By optimizing the thicknesses of the absorbers and interlayers, as well as adjusting bandgaps, they were able to increase the photocurrent of all three cells and achieve a power conversion efficiency of 44.3%.
• The researchers emphasized the importance of choosing thicker perovskite layers with higher bandgaps to maximize the open-circuit voltage potential of the top cell.