Perovskite solar cells, acclaimed for efficient light absorption of the novel perovskite material, face challenges in stability. This study examines the impact of bending on flexible perovskite films. AFM scans were taken to ensure proper sample fabrication. By employing time-resolved photoluminescence to probe carrier lifetimes and XRD to calculate lattice strain, comparative analysis was done before and after bending the flexible samples for 10 minutes at an 8 mm radius. We found significant reduction (>26%) in carrier lifetimes of three samples due to strain, indicating an increase in defect density, and an increase in bandgap of 1-2% (from UV-Vis), stressing the need for strain management in designing perovskite devices, crucial for their long-term performance in flexible electronics.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• Gegechkori, Nikoloz

Subject

• Energy
• Innovation

Publisher

• Worcester Polytechnic Institute

Identifier

• 115323
• E-project-121623-110524

Keyword

• Flexible Perovskite
• Strain
• TRPL
• Bending
• XRD

Advisor

• Soboyejo, Winston
• Burnham, Nancy A.

Year

• 2023

Date created

• 2023-12-16

Resource type

• Major Qualifying Project

Major

• Physics

Source

• E-project-121623-110524

Rights statement

• In Copyright

Last modified

• 2024-02-07