Frontiers in Energy, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 28, 2024
Language: Английский
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 31, 2024
Abstract The uncontrolled crystallization of perovskite generates a significant number internal and interfacial defects, posing major challenge to the performance solar cells (PSCs). In this paper, novel bi‐interfacial modification strategy utilizing 5‐fluoropyridinic acid (FPA) is proposed modulate crystal growth provide defect passivation. It demonstrated that FPA self‐deposited at both top bottom interfaces films during thermal annealing. CO N functional groups in serve as chelating agents, binding closely uncoordinated Pb 2+ /Pb clusters, thereby passivating defects reducing charge recombination interfaces. strong chemical interactions between further stabilize Pb‐I framework, promoting formation high‐quality films, confirmed by situ photoluminescence measurements. Consequently, modified inverted PSCs achieved an exceptional power conversion efficiency (PCE) 25.37%. Moreover, devices retained over 93.17% initial after 3000 h continuous illumination under one‐sun equivalent conditions nitrogen atmosphere. This paper presents promising pathway for enhancing stability through self‐induced approach.
Language: Английский
Citations
25
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 15, 2025
Abstract Formamidinium (FA)‐based Sn‐Pb perovskite demonstrates superior thermal stability, making it well‐suited for all‐perovskite tandem solar cells. However, the uncontrolled crystallization process remains a significant challenge. In this study, an effective strategy is presented to regulate of FA‐based by incorporating perfluoroanionic surfactant (perfluorohexanesulfonic acid potassium salt, F 13 C 6 SO 3 K) into precursor. The multifunctional sites K, including atoms and − groups, interact with components stabilize colloidal distribution precursor modulate kinetics. This results in high‐quality films fewer defects. Consequently, cell (PSC) achieves champion efficiency 24.33%, open‐circuit voltage 0.895 V fill factor 83.2%. After continuous heating at 65 °C 1008 h, still maintain 91% its initial efficiency, which shows enhanced stability. When coupled wide‐bandgap subcell, reaches power conversion (PCE) 27.57%.
Language: Английский
Citations
1
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 503, P. 158400 - 158400
Published: Dec. 12, 2024
Language: Английский
Citations
5
ACS Photonics, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 5, 2025
Language: Английский
Citations
0
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: Feb. 27, 2025
Abstract Hybrid organic–inorganic lead halide perovskites have emerged as a promising material for high-efficiency solar cells, yet challenges related to crystallization and defects limit their performance stability. This study investigates the use of perovskite quantum dots (QDs) seeds enhance quality FAPbI 3 films improve cells (PSCs). We demonstrate that CsPbI CsPbBr QDs effectively guide process, leading formation larger crystals with preferential orientations, particularly (001) (002) planes, which are associated reduced defect densities. seed-mediated growth strategy resulted in PSCs power conversion efficiencies (PCEs) 24.75% 24.11%, respectively, compared baseline efficiency 22.05% control devices. Furthermore, devices incorporating QD-treated exhibited remarkable stability, maintaining over 80% initial PCE after 1000 h simulated sunlight exposure, significant improvement control. Detailed optoelectronic characterization revealed non-radiative recombination enhanced charge transport These findings highlight potential powerful tool crystallization, facet orientation, overall device performance, offering route both stability PSCs.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 14, 2025
Abstract The residual strain and crystallographic defects in perovskite films pose significant challenges to improving the efficiency stability of solar cells (PSCs). To address these issues, 3,5‐difluorobenzenesulfonamide (DBF) is introduced as a powerful additive. spacing functional groups DBF molecules precisely comparable bond lengths angles lattice, structural feature originating from geometric compatibility between its benzene ring substituents [PbI 6 ] octahedral framework structure. This atomic‐scale matching effectively minimizes lattice mismatch, enabling release passivate film. spontaneous interaction PbI 2 slows down crystal growth, film quality. size‐matching effect with strong interactions F···MA⁺ (FA⁺) hydrogen bonds ─S═O (─NH )···Pb ⁺ coordination defects. As result, DBF‐modified PSCs achieve champion 25.18%. More importantly, devices demonstrate excellent environmental stability, retaining 97.71% their initial power conversion (PCE) after 1600 h an atmospheric environment (25 °C, 20% RH) without encapsulation. study provides simple effective strategy enhance photovoltaics.
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156703 - 156703
Published: Oct. 1, 2024
Language: Английский
Citations
0
Frontiers in Energy, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 28, 2024
Language: Английский
Citations
0