Enhancing the Stability of Perovskite Solar Cells Through an Iodine Confinement Strategy in Covalent Organic Frameworks

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

Published: Feb. 19, 2025

Abstract Perovskite solar cells (PSCs) have shown high power conversion efficiency in solar‐to‐electricity applications. However, the commercialization of this emerging technology is limited due to its low stability under realistic operating conditions. A major reason for degradation formation and escape iodine species upon exposure light, polarization thermal stress. Here, a new method proposed confine perovskite layer using multifunctional nitrogen‐rich covalent organic framework (TAPT‐BP‐COF). The ordered pore structure surface binding groups TAPT‐BP‐COF not only facilitate charge transfer complexes with molecules, but also enable multisite chelation undercoordinated lead ions, thereby improving quality film. This confinement strategy enables resulting Cs 0.05 MA FA 0.9 PbI 3 PSC devices (n‐i‐p) achieve an outstanding 25.58% (0.06 cm −2 ) one sun illumination. unencapsulated maintained over 96% their initial after continuous maximum point tracking 1200 h N 2 atmosphere. Importantly, PSCs demonstrated excellent even temperature ISOS‐L‐2 protocol, maintaining 90% peak at 85 °C 800 h.

Language: Английский

Flexible perovskite-based multiple-junction photovoltaics

Joule, Journal Year: 2025, Volume and Issue: unknown, P. 101870 - 101870

Published: March 1, 2025

High‐Performance Perovskite Solar Cells via Synergistic Grating Microstructures and Dynamic‐Bonded Ion‐Conductive Elastomers

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

Published: April 25, 2025

Abstract Perovskite solar cells (PSCs) have emerged as a prominent focus in energy research owing to their remarkable power conversion efficiency (PCE). However, the realization, maintenance, and even repair of high perovskite are still difficult issues. Herein, synergistic strategy grating microstructures ion‐conducting elastomers (ICE) based on dynamic hindered urea‐carbamate bonds is proposed realize high‐efficiency long‐term stable PSCs. The microstructured PbI 2 (G‐PbI ) can initially optimize crystallization behavior perovskite, fact that introduction ICE achieves 25.61% efficient featuring graded demonstrates triple‐functionality: i) Abundant carbonyl (‐C(O)‐) coordination sites within strongly interact with , enhancing kinetics; ii) intrinsic conductivity facilitates charge carrier transport extraction at grain boundaries interfaces; iii) moisture‐responsive urea coupled bond reorganization endows device exceptional hydrothermal stability (T 80 >1500 h), more interestingly, ICE‐containing devices be simply heat‐treated recover photovoltaic performance. A hierarchical covalent networks opens new insights into field constructing, maintaining, restoring

Language: Английский