A Versatile Bridging Molecule Managed the Buried SnO₂/Perovskite Interface for Efficient and Stable Perovskite Solar Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Buried interface in perovskite solar cells (PSCs) is a critical determination for the performance and stability because it dominates crystallization of layer, non-radiative recombination, ion migration at interfaces. Herein, novel versatile modifier, potassium sucrose octasulfate (K8SOS) which rich sulfonic groups ions, introduced bridging buried SnO2 interface, to improve interfacial states further device performance. It found that K8SOS serves as bridge can not only passivate defects through multi-site strengthening chemical binding, thus effectively inhibiting non-radiation recombination suppressing migration, but also optimize surface state absorber, ultimately achieving gratifying efficiency 25.32% with negligible hysteresis. What's more, optimized delivers admirable sustaining over 90% initial power conversion after being aged under continuous 85 °C heating stress 40 ± 5% RH humidity ≈600 ≈1200 h 1-sun illumination, respectively.

Language: Английский

Toughened Interface by Engineering the Side Group of Conjugated Polymers to Stabilize Flexible Perovskite Solar Modules

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Perovskite solar cells (PSCs) have attracted considerable attention due to their high power conversion efficiency (PCE), cost-effective manufacturing processes, as well the potential flexibility. However, a significant challenge commercial applications of PSCs is mechanical reliability. In this work, three naphthalene diimide polymers with distinct donor units are chosen reduce surface trap states and enhance long-term stability reliability photovoltaic devices. The champion rigid incorporating conjugated achieved 373% increase adhesion toughness at interface, PCE 25.5% for 0.16 cm2 single cell 22.3% 30.9 module retain 97% initial after 2000 h continuous light soaking. Especially, flexible exhibited improved stability, achieving 24.8% 20.3% 27.9 module, maintaining 95% 5,000 bending cycles. This study highlights interfacial polymer in enhancing PSCs.

Language: Английский

Advancing Perovskite Research with Nano-IR: Insights, Challenges, and Future Directions

Chemical & Biomedical Imaging, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Language: Английский