Stable and Efficient Indoor Photovoltaics Through Novel Dual‐Phase 2D Perovskite Heterostructures

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

2D perovskite materials are ideal candidates for indoor photovoltaic (IPV) applications due to their tunable bandgap, high absorption coefficients, and enhanced stability. However, attaining uniform crystallization overcoming low carrier mobility remain key challenges perovskites, limiting overall performance. In this study, a light-absorbing layer is constructed using Dion-Jacobson (DJ)-phase EDA(FA)4Pb5I16 (n = 5) introduced butylammonium iodide (BAI) interface modification, thereby creating novel DJ/Ruddlesden-Popper (RP) dual heterostructure. By adjusting the thickness of BAI-based layer, relationship between interfacial defect states investigated under varying light intensities. The results indicate that, by achieving balance passivation transport, optimized device reaches power conversion efficiency (PCE) 30.30% an open-circuit voltage (VOC) 936 mV 1000 lux (3000 K LED). 2D-DJ/RP IPV exhibits twentyfold increase in T90 lifetime compared 3D devices. It first time systematically study perovskites applications, demonstrating that rationally designed hold significant potential fabricating high-performance PSCs.

Language: Английский

Low‐Temperature Encapsulation with Silicone Grease Enhances Efficiency and Stability of Perovskite Solar Cells via Pb⁰ Defect Passivation

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract Encapsulation is a critical strategy for mitigating the instability of perovskites, which remains primary challenge their commercialization. Traditional encapsulation adhesives, such as ethylene vinyl acetate and epoxy resin, are constrained by high‐temperature processes potential chemical reactions that can impair efficiency perovskite devices. The use vacuum silicone grease, primarily composed polydimethylsiloxane (PDMS), not only shields devices from moisture oxygen but also significantly enhances power conversion 23.91% to 25.34%. Further investigations reveal this improvement be attributed formation coordination bonds between atoms in PDMS lead within structure. This mechanism boosts inhibits Pb 0 defects, contributing loss instability. A ten‐fold increase stability observed at ≈90% humidity, underscoring its low‐temperature, non‐damaging, effective method enhancing performance solar cells.

Language: Английский

Mitigating voltage losses and strain in perovskite solar cells through precise microscopic arrangement of chemical monomers

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Language: Английский