Nano Energy, Journal Year: 2023, Volume and Issue: 114, P. 108653 - 108653
Published: June 28, 2023
Language: Английский
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 24, 2025
Abstract Formamidinium lead iodide (FAPbI₃) perovskite solar cells (PSCs) hold immense potential for high‐efficiency photovoltaics, but maximizing their open‐circuit voltage ( V OC ) remains challenging. Targeting the inherently stable {111} c ‐dominant facets is a promising approach enhancing stability, formation typically suffers from high defect densities and disordered growth. This study introduces novel using an in situ polymerizable radical molecule, ATEMPO, as additive to address these issues. ATEMPO preferentially interacts with facets, guiding growth forming “radical molecular network‐buffer” upon polymerization. The network effectively mitigates lattice strain, suppresses formation, enhances charge transport via redox‐mediated hopping, provides hydrophobic barrier, significantly improving moisture resistance. strategy yields high‐quality, ‐oriented FAPbI₃ films, leading champion PCE of 25.28% remarkably 1.203 V, corresponding energy loss E only 0.297 eV, among highest reported FAPbI₃‐based PSCs. Furthermore, mini‐module fabricate active area 12.5 cm 2 achieve 21.39%. work paves way developing high‐performance, PSCs minimized photovoltage loss. it offers enhance device longevity environmental concerns.
Language: Английский
Citations
1
Small Methods, Journal Year: 2025, Volume and Issue: unknown
Published: March 17, 2025
Abstract Blade‐coating has emerges as a critical route for scalable manufacturing of perovskite solar cells. However, the N 2 knife‐assisted blade‐coating process under ambient conditions typically yields inferior‐quality films due to inadequate nucleation control and disorderly rapid crystallization. To address this challenge, novel solvent engineering strategy is developed through substitution N‐methyl‐2‐pyrrolidone (NMP) with 1,3‐dimethyl‐1,3‐diazinan‐2‐one (DMPU). The unique physicochemical properties DMPU, characterized by low vapor pressure, strong coordination capability, limited PbI solubility, synergistically regulate crystallization kinetics. This enables nucleation, stabilization intermediate phases in wet films, controlled crystal growth, ultimately producing phase‐pure reduced defect density. Moreover, feasibility superiority mixed are demonstrated. optimized blade‐coated PSCs achieve power conversion efficiency 21.74% enhanced operational stability, retaining 84% initial continuous 1‐sun illumination 1,000 h. work provides new insights into design preparing films.
Language: Английский
Citations
1
Nature Nanotechnology, Journal Year: 2025, Volume and Issue: unknown
Published: April 17, 2025
Language: Английский
Citations
1
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(13)
Published: Dec. 17, 2023
Abstract Narrow bandgap cubic formamidine perovskite (α‐FAPbI 3 ) is widely studied for its potential to achieve record‑breaking efficiency. However, high preparation difficulty caused by lattice instability criticized. A popular strategy stabilizing the α‐FAPbI replace intrinsic FA + or I − with smaller ions of MA , Cs Rb and Br whereas this generally leads broadened optical phase separation. Studies show that substitution‐free phase‐pure can stability. challenging high‐quality films has hindered further development. Here, a facile synthesis ‐free film new solution modification reported. This enables activation lead–iodine (Pb─I) frameworks forming coated Pb⋯O network, thus simultaneously promoting spontaneous homogeneous nucleation rapid transition from δ α phase. As result, efficient stable PSC obtained through one‐step method without antisolvent treatment, record efficiency 23.15% excellent long‐term operating stability 500 h under continuous light stress.
Language: Английский
Citations
22
Nano Energy, Journal Year: 2023, Volume and Issue: 114, P. 108653 - 108653
Published: June 28, 2023
Language: Английский
Citations
18