Perovskite Solar Cells with Extremely High 24.63% Efficiency through Design of Double Electron Transport Layers and Double Luminescent Converter Layers

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(34)

Published: Feb. 20, 2024

Abstract Introduction of fluorescent down‐conversion layer inside perovskite solar cells (PSCs) can highly improve the ultraviolet response devices and light stability. However, such a device is usually confronted with problem inter‐diffusion absorber layer, which severely limits its further development. To address this problem, herein, work employs an interfacial dual electron transport layers (ETLs) strategy, sandwiching Cd‐CsPbCl 3 :Mn 2+ luminescent quantum dots within gap ETLs, not only reduces interface energy level offset, but also improves nucleation crystallization kinetics films prevents their diffusion to layer. As result, efficient synergy effect effectively elevates both open‐circuit voltage fill factor PSCs, reaching maximum values 1.181 V 81.14%, respectively, finally delivering progressively increased power conversion efficiency (PCE) 24.32% significantly improved response, adopts strategy outside obtains PCE 24.63%, best for various cells. This opens new door development stable photoluminescence PSCs.

Language: Английский

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Microencapsulated Perovskite Crystals via In Situ Permeation Growth from Polymer Microencapsulation‐Expansion‐Contraction Strategy: Advancing a Record Long‐Term Stability beyond 10 000 h for Perovskite Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(18)

Published: Jan. 20, 2024

Abstract Organic metal halide perovskite solar cells (PSCs) bearing both high efficiency and durability are predominantly challenged by inadequate crystallinity of perovskite. Herein, a polymer microencapsulation‐expansion‐contraction strategy is proposed for the first time to optimize crystallization behavior perovskite, typically adeptly harnessing swelling deswelling characteristics poly(4‐acryloylmorpholine) (poly(4‐AcM)) network on PbI 2 surface. It can effectively retard rate permitting meliorative featured increased grain size from 0.74 1.32 µm reduced trap density 1.12 × 10 16 2.56 15 cm −3 . Moreover, profiting protection poly(4‐AcM) microencapsulation layer, degradation markedly suppressed. Resultant PSCs gain robust power conversion (PCE) 24.04%. Typically, they maintain 91% their initial PCE 13 008 h in desiccated ambient environment retain 92% after storage 4000 with relative humidity 50 ± 10%, which state‐of‐the‐art long‐term stability among reported contributions.

Language: Английский

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4-Trifluorophenylammonium Iodide-Based Dual Interfacial Modification Engineering toward Improved Efficiency and Stability of SnO₂-Based Perovskite Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(5), P. 6777 - 6787

Published: Jan. 29, 2023

Passivation engineering has been identified as an effective strategy to eliminate the targeted interfacial defects for improving efficiency and stability of perovskite solar cells (PSCs). Herein, 4-trifluorophenylammonium iodide (CF3PhAI) is presented a multifunctional passivation agent modify buried SnO2/perovskite perovskite/hole transport layer (HTL) interfaces. Upon incorporation CF3PhAI between SnO2 perovskite, can chemically link via Lewis coordination electrostatic coupling, thereby effectively passivating under-coordinated Sn filling oxygen vacancy. Meanwhile, helps anchor PbI2 organic cations (MA+/FA+) control crystallization perovskite. Consequently, reduced defects, homogeneous crystallites, better energetic alignment be simultaneously achieved. When was further used perovskite/HTL interface, fabricated PSCs yielded impressive power conversion 23.06% together with negligible J-V hysteresis. The unencapsulated devices exhibited long-term in wet conditions (91.8% retention after 1000 h) due water-resistant CF3PhAI. We also achieved good light soaking stability, maintaining 86.1% its initial aging 720 h. Overall, our finding provides promising modifying dual contact interfaces toward improved stability.

Language: Английский

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Efficient Tin-Based Perovskite Solar Cells Enabled by Precisely Synthesized Single-Isomer Fullerene Bisadducts with Regulated Molecular Packing

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 146(4), P. 2494 - 2502

Published: Dec. 21, 2023

Designing and synthesizing fullerene bisadducts with a higher-lying conduction band minimum is promising to further improve the device performance of tin-based perovskite solar cells (TPSCs). However, commonly obtained bisadduct products are isomeric mixtures require complicated separation. Moreover, prone resulting in energy alignment disorders, interfacial charge loss, limited improvement. Herein, we synthesized single-isomer C60- C70-based diethylmalonate functionalized (C60BB C70BB) by utilizing steric-hindrance-assisted strategy determined all molecular structures involved single crystal diffraction. Meanwhile, found that different solvents used for processing can effectively regulate packing their films. The dense amorphous films prepared using anisole exhibited highest electron mobility. Finally, C60BB- C70BB-based TPSCs showed impressive efficiencies up 14.51 14.28%, respectively. These devices also excellent long-term stability. This work highlights importance developing strategies synthesize TPSCs' performance.

Language: Английский

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Elimination of charge accumulation by a self-assembled cocrystal interlayer for efficient and stable perovskite solar cells

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(2), P. 569 - 579

Published: Nov. 21, 2023

A SAM-CL has been introduced in n–i–p perovskite solar cells to optimize interfacial energy level arrangement and eliminate charge accumulation. The large pyrene rings F atoms of inhibit severe ion migration moisture erosion, thus improving device stability.

Language: Английский

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Templating the Buried Interface of a Perovskite Film by a 2D Metal–Organic Framework for Efficient and Stable Solar Cells

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(14), P. 5685 - 5694

Published: March 28, 2024

The surface microstructure of the electron transport layer (ETL) is crucial for performance and stability n–i–p perovskite solar cells (PSCs) as it affects crystallization. However, improving ETL to simultaneously eliminate interface defects enhance crystalline quality a key challenge date. To address this issue, we have developed 2D metal–organic framework (MOF), Zn-TCPP, using multifunctional template modulate ETL/perovskite interface. Zn-TCPP features periodic pore structure that promotes ordered nucleation perovskite, resulting in an improvement film crystallinity. Furthermore, its organic linker can interact with Pb2+ I–, reducing density defects. Moreover, immersed within pores forms radial junctions, leading increased charge extraction efficiency. Consequently, PSCs based on nanosheets exhibit enhanced power conversion efficiency (23.54%) they demonstrate significantly improved environmental resistance, retaining 88% their original after 550 h period. This study underscores tremendous potential low-dimensional MOF materials optimizing PSC performance.

Language: Английский

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Assessing the Optoelectronic Performance of Halide Perovskite Quantum Dots with Identical Bandgaps: Composition Tuning Versus Quantum Confinement

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(8), P. 3970 - 3981

Published: July 19, 2024

Language: Английский

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Using Post‐Treatment Additives for Crystal Modulation and Interface Passivation Enables the Fabrication of Efficient and Stable Perovskite Solar Cells in Air

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

Published: Oct. 6, 2024

Abstract High‐performance perovskite solar cells (PSCs) fabricated in ambient air are considered inevitable for low‐cost commercial manufacturing. However, passivating film defects and controlling the crystallization process critical achieving high performance PSCs. This study proposes using novel 2D material MBene green antisolvent to simultaneously modulate passivation of perovskites. facilitates uncoordinated Pb 2+ ions, thereby enhancing formation energy vacancies within adjusting level structure. Moreover, increases nucleation sites perovskite, significantly extending crystal growth improving crystallinity, reducing non‐radiative recombination. Consequently, champion devices treated with achieve a power conversion efficiency (PCE) 24.22% when air, exhibit superior humidity long‐term stability. Furthermore, PSCs added significant stability under various environmental conditions, including heat. The results lay foundation development materials photovoltaics, revealing their mechanism as new type perovskites, providing insights industrially producing efficient stable cells.

Language: Английский

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Simultaneous dual-interface modification based on mixed cations for efficient inverted perovskite solar cells with excellent stability

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152899 - 152899

Published: June 6, 2024

Language: Английский

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High-performance self-powered perovskite photodetectors enabled by Nb2CTx-passivated buried interface

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1004, P. 175903 - 175903

Published: Aug. 6, 2024

Language: Английский

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