Synergetic Interface and Bulk Defects Modification with Identical Organic Molecule for Efficient Inverted Perovskite Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Recent progress in inverted perovskite solar cells (IPSCs) mainly focused on NiOx modification and (PVK) regulation to enhance efficiency stability. However, most works address only monofunctional modifications, identical molecules with the ability simultaneously optimize interface bulk phase have been rarely reported. This work proposes a dual approach using 4-amino-3,5-dichlorobenzotrifluoride (DCTM) both upper interfaces reduction of defects perovskite. Amino group DCTM increases Ni3+/Ni2+ ratio NiOx, thereby increasing conductivity optimizing energy alignment. Additionally, fills Pb2+ I– vacancies perovskite, which improves vertical orientation grains subsequently reduces nonradiative recombination, achieving increased carrier lifetime. PVK modified by exhibits enhanced level alignment electron transport layer, while femtosecond transient absorption (TA) spectroscopy confirms that facilitates efficient transport, leading high-performance IPSCs. The optimized IPSCs achieve maximum 22.8% reduced hysteresis (0.7%). Moreover, unencapsulated device preserves over 80% its initial power conversion (PCE) after 1000 h stored air at 30% relative humidity. strategy monomolecular offers straightforward solution for optimization provides new insights into selecting aniline-derived

Language: Английский

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Self‐Assembled Charge Bridge Path at the Sn‐Pb Perovskite/C₆₀ Interface for High‐Efficiency All‐Perovskite Tandem Solar Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Narrow bandgap mixed tin-lead perovskite solar cells (PSCs) have garnered substantial research interest owing to their remarkable optoelectronic properties. However, non-radiative recombination and carrier transport losses at the interface between layer charge (C60) significantly reduce overall efficiency of PSCs. To address this challenge, 9-Fluorenylmethyl carbazate (9FC) is incorporated C60. The hydrazide group present in 9FC effectively mitigates oxidation Sn2+. Furthermore, can engage chemical bonding with perovskite, while outward-facing aromatic rings create effective π-π interactions C60, thereby promoting enhanced interfacial transfer. highest-performing PSCs achieve a power conversion (PCE) 23.97%, accompanied by an impressive open-circuit voltage 0.91 V. Additionally, these facilitate development highly efficient two-terminal four-terminal all-perovskite tandem cells, which demonstrate efficiencies 27.01% 28.07%, respectively.

Language: Английский

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Enhancing electron transport for efficiency -recorded HTL-free inverted perovskite solar cells by molecular complementary passivation

Joule, Journal Year: 2025, Volume and Issue: unknown, P. 101880 - 101880

Published: March 1, 2025

Language: Английский

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Recent Advances in Interfacial Engineering for High-Efficiency Perovskite Photovoltaics

DeCarbon, Journal Year: 2025, Volume and Issue: unknown, P. 100107 - 100107

Published: March 1, 2025

Language: Английский

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Enhanced Performance and Stability of Perovskite Solar Cells Through Modification of SnO₂ Electron Transport Layer with Stable Conformation Surfactant

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

Published: March 3, 2025

Abstract Uncontrolled deposition of tin oxide (SnO 2 ) colloidal nanoparticles and perovskite precursors poses challenges for improving the efficiency stability solar cells (PSCs). Modifying electron transport layer (ETL) can both enhance its own performance influence crystallization kinetics upper layer. This study incorporates chain‐like surfactants with spatially opposite charges ETL modification. It is found that molecular conformational changes induced by flexibility carbon chain lead to collapse urchin‐like structure, impacting passivation effect SnO deposition. Due more stable conformation short‐chain surfactant, fully extended chains in micelles form a establishing stronger aggregation barrier ensures uniform The ordered distribution molecules allows functional groups be exposed on surface facilitates interlayer approach enhances across layers, alleviates interfacial tensile stress, promotes contact, extends processing window perovskite, thereby ensuring high‐performance PSCs. Ultimately, an optimized substrate strategy increases PSC device from 22.21% 24.12%, greatly improves unencapsulated under various conditions, providing new option modification engineering.

Language: Английский

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Dual-interface modification of perovskite solar cells with lithium acetate and hydroxyl functionalized alkynyl derivative

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 111027 - 111027

Published: April 1, 2025

Language: Английский

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Multifunctional Biguanide Salts as Efficient Defect Passivators for High-Performance Inverted Perovskite Solar Cells

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Language: Английский

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