Dual-Site Passivation Coupling Internal Encapsulation via 3,5-Bis(trifluoromethyl)benzenethiol for Efficient and Stable Perovskite Solar Cells

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

Published: March 14, 2025

Perovskite solar cells (PSCs) have made significant progress in efficiency, but their long-term operational stability remains an important yet challenging issue. Here, a dual-site passivation coupling internal encapsulation strategy is developed by introducing 3,5-bis(trifluoromethyl)-benzenethiol (35BBT) at the perovskite (PVK)/hole transport layer (HTL) interface. 35BBT provides dual active sites containing sulfur (S) atoms and fluorine (F) atoms, where S sulfhydryl group F trifluoromethyl coordinate with unpaired Pb2+ to form bonds, meanwhile hydrogen bonds organic cations. This mitigates deep shallow defects PVK/HTL Notably, 35BBT, hydrophobic benzene rings covering layer, enables protect films from water oxygen invasion. Consequently, Ag-based device treatment achieves efficiency enhancement 22.03% 23.86%, retaining 89.1% of its initial even after 2000 h air exposure. fabricated also exhibits thermal 60 °C. study offers avenue for simultaneously passivating interface inhibiting water/oxygen erosion, thereby enabling fabrication efficient stable PSCs future commercial applications.

Language: Английский

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Design and Synthesis of Fluorinated Quantum Dots for Efficient and Stable 0D/3D Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(44)

Published: Aug. 28, 2023

Abstract Dimensionality engineering involving the low‐dimensional and 3D perovskites has been demonstrated as an efficient promising strategy to modulate interfacial energy loss well instability in perovskite solar cells (PSCs). Herein, use of fluorinated Cesium Lead Iodide (CsPbI 3 ) quantum dot (PQD) is first reported interface modification layer for PSCs. The binding between CsPbI PQD surface native oleic acid (OLA)/oleylamine (OAm) ligands governed by a dynamic adsorption–desorption equilibrium. Perfluorooctanoic (PFA) with stronger affinity more hydrophobic nature explored partially replace OLA prepare ligand capped PQDs (F‐CsPbI ). Through optimization addition PFA during hot‐injection synthesis, situ treated F‐CsPbI display reduced defect states, higher photoluminescence yields together improved stability. Subsequently, both are utilized PSCs, delivering best efficiency values 21.99% 23.42%, respectively, which significantly enhanced compared control device (20.37%). More importantly, benefiting from its properties, exhibits excellent ambient storage stability (25 °C, relative humidity: 35–45%), retaining over 80% initial after 1500 h aging.

Language: Английский

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Tailoring the interface by a multifunctional amphiphilic molecule enabled 24.84%-efficiency and stable perovskite solar cells

Nano Energy, Journal Year: 2023, Volume and Issue: 118, P. 109003 - 109003

Published: Oct. 20, 2023

Language: Английский

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Review on Functional Electrolyte, Redox Polymers, and Solar Conversions in 3G Emerging Photovoltaic Technologies: Progress and Outlook

Energy & Fuels, Journal Year: 2023, Volume and Issue: 37(19), P. 14473 - 14511

Published: Sept. 14, 2023

Abundant solar energy has transformed the present photovoltaics owing to its rapid conversion into electrical without deteriorating ecosystem. Third generation (3G) devices reveal utilization of photosensitizer, i.e., organic dye, quantum dots, and perovskite as functional absorbing materials transform energy. Functional polymers are key ingredients (fuels) for development suitable redox potential high temperature or humidity resistive charge transport medium. Electrolyte accelerates photovoltaic reversible reaction (hole conduction) through exposure a minimum barrier between photoanode cathode. Redox-active polymer enhances electrolyte uptake efficiency, ionic conductivity, dimensional stability device. Various electrolytes exhibit different activities due their The functionalized bears appropriate HOMO–LUMO energetics low activation energy, which could adjust photosensitizer with better compatibility. Therefore, percolates couple at photoexcited sensitizer control undesired reactions. It plays important role ion electron mediator via expanding interfacial band structure reaction. polymeric pendant groups (chemical environments) preserve couples reducing wettability thus immobilize active density anions Thus, improves reversibility compatibility, filtration effect, synergistic stabilization. review focuses on polymer-derived electrolytes, photosensitizer–polymer interface, thermodynamic interactions, power efficiencies 3G devices. open an avenue stable efficient reactions cost based dyes, perovskite-sensitized systems.

Language: Английский

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Structure-regulated fluorine-containing additives to improve the performance of perovskite solar cells

Nano Research, Journal Year: 2024, Volume and Issue: 17(7), P. 6080 - 6086

Published: March 14, 2024

Language: Английский

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