Large-Area, Flexible, Lead-Free Sn-Perovskite Solar Modules

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Perovskite solar cells offer high power conversion efficiencies.
• Development of large-area, flexible perovskite solar modules is crucial for commercialization.
• Scalable fabrication methods are needed for industrial production.

Purpose of the Study:

• To fabricate large-area, flexible organic-inorganic tin perovskite solar modules.
• To evaluate the performance of these modules using industry-compatible techniques.

Main Methods:

• Utilized a scalable blade-coating technique for module fabrication.
• Fabricated an 8-cell interconnected mini-module with a 25 cm² active area.
• Tested module performance under standard solar illumination (AM 1.5G) and white LED light.

Main Results:

• Achieved a power conversion efficiency of 5.7% under 1000 W/m² (AM 1.5G).
• Demonstrated a power conversion efficiency of 9.4% under 2000 lx (white-LED).
• Successfully fabricated large-area, flexible modules using a scalable method.

Conclusions:

• The blade-coating technique is suitable for producing large-area, flexible perovskite solar modules.
• The fabricated modules show promising efficiency for potential applications.
• This work advances the development of flexible perovskite photovoltaics.