Enhancing Photovoltaically Preferred Orientation in Wide‐Bandgap Perovskite for Efficient All‐Perovskite Tandem Solar Cells

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

Published: Jan. 7, 2025

Wide-bandgap perovskite solar cells (WBG PSCs) have promising applications in tandem devices yet suffer from low open-circuit voltages (VOCs) and less stability. To address these issues, the study introduces multifunctional nicotinamide derivatives into WBG PSCs, leveraging regulation on photovoltaically preferential orientation optoelectronic properties via diverse functional groups, e.g., carbonyl, amino. Isonicotinamide (IA) molecule emerges as most effective agent, enhancing crystallization kinetics defect passivation due to its unique planar spatial configuration. Incorporating IA perovskites improves (100) preferred crystal orientation, reduces trap density, enables well-matched energy band alignment. High-performance 1.77 eV PSCs are achieved with a champion power conversion efficiency of 19.34% VOC 1.342 V, leading fabrication best-performing all-perovskite cell PCE 28.53% (certified 28.27%) excellent operational stability, maintaining over 90% initial under 1 sun illumination for 600 h.

Language: Английский

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What Matters for the Charge Transport of 2D Perovskites?

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: May 23, 2024

Compared to 3D perovskites, 2D perovskites exhibit excellent stability, structural diversity, and tunable bandgaps, making them highly promising for applications in solar cells, light-emitting diodes, photodetectors. However, the trade-off worse charge transport is a critical issue that needs be addressed. This comprehensive review first discusses structure of metal halide then summarizes significant factors influencing detail provides brief overview testing methods. Subsequently, various strategies improve are presented, including tuning A'-site organic spacer cations, A-site B-site X-site ions. Finally, an outlook on future development improving perovskites' discussed.

Language: Английский

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Rational heterostructure stacking enables 23% wide-bandgap perovskite solar cells by side-reaction inhibition

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(16), P. 5984 - 5992

Published: Jan. 1, 2024

Suppressing side reactions led to the formation of rational Dion–Jacobson 2D/3D surface heterostructures, achieving an optimal PCE 23.05% (certified 22.58%) for 1.68 eV perovskite solar cells.

Language: Английский

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Surface Passivation with Tailoring Organic Potassium Salt for Efficient FAPbI₃ Perovskite Solar Cells and Modules

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 3, 2024

Abstract Passivating surface defects on perovskite films with tailored functional materials has emerged as one of the most effective strategies for achieving high‐performance solar cells (PSCs). Among existing material selections, potassium salts stand out their passivation surrounding grain boundaries. However, widely used are inorganic and only soluble in highly polar solvents, which limits practical application passivation. Herein, a novel organic salt (KCFSO), multiple groups good solubility low isopropanol, is reported to function post‐treatment agent perovskite. Combined experimental results theoretical calculations, formed intermolecular interactions between KCFSO revealed play vital role determining defect effect. Thus, KCFSO‐modified film shows more uniform potential distribution, dramatically decreased density, improved charge transfer, leading champion power conversion efficiency (PCE) 25.11%, stability derived PSCs. As demonstration scalability, centimeter‐sized PSCs 5 cm × mini‐modules also demonstrate impressive PCEs 24.17% 20.18%, respectively. These findings provide insights into passivator design principles achieve efficient stable photovoltaics.

Language: Английский

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25.71%‐Efficiency FACsPbI3 Perovskite Solar Cells Enabled by A Thiourea‐based Isomer

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(49)

Published: Aug. 15, 2024

Abstract Various isomers have been developed to regulate the morphology and reduce defects in state‐of‐the‐art perovskite solar cells (PSCs). To insight structure‐function‐effect correlations for isomerization of thiourea derivatives on performance PSCs, we two [(3,5‐dichlorophenyl)amino]thiourea (AT) N‐(3,5‐dichlorophenyl)hydrazinecarbothioamide (HB). Supported by experimental calculated results, it was found that AT can bind with undercoordinated Pb 2+ defect through synergistic interaction between N1 C=S group a formation energy 1.818 eV, which is much higher than from −NH− groups HB (1.015 eV). Moreover, stronger regulates crystallization process film obtain high‐quality high crystallinity, large grain size, low density. Consequently, AT‐treated FACsPbI 3 device engenders an efficiency 25.71 % (certified as 24.66 %), greatly control (23.74 %) HB‐treated devices (25.05 %). The resultant exhibits remarkable stability maintaining 91.0 95.2 its initial after aging 2000 h air condition or tracking at maximum power point 1000 h, respectively.

Language: Английский

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Enhancing perovskite solar cell performance through PbI₂in situ passivation using a one-step process: experimental insights and simulations

RSC Advances, Journal Year: 2024, Volume and Issue: 14(46), P. 34051 - 34065

Published: Jan. 1, 2024

The new architecture of MAPbI 3 -based solar cells with photovoltaic parameters. inset shows a schematic design the n-i-p structure for PSC used in SCAPS simulation: AZO/SnO 2 /MAPbI excess PbI /spiro-OMeTAD/IZO.

Language: Английский

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4-Methoxy phenethylammonium halide salts for surface passivation of perovskite films towards efficient and stable solar cells

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 152955 - 152955

Published: June 9, 2024

Language: Английский

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New Insights into MAI Additives in 2D‐Assisted 3D Controlled Crystallization Toward High‐Quality α‐Phase FAPbI₃ Perovskites

Advanced Science, Journal Year: 2024, Volume and Issue: 11(38)

Published: Aug. 6, 2024

The highly oriented 2D perovskite templates of n = 1 have typically been created to attain controllable and crystallization 3D α-phase formamidinium lead triiodide (α-FAPbI

Language: Английский

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Tailoring Organic Cation Structures in DJ 2D Perovskite: Impacts on Performance of 2D/3D Heterojunction Perovskite Solar Cells

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 111842 - 111842

Published: Feb. 1, 2025

Language: Английский

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Versatile Grain Boundary Trimming Strategy for Fabricating High-Performance Wide-Bandgap Perovskite Solar Cells

Published: Jan. 1, 2025

Language: Английский

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