Self‐Induced Bi‐interfacial Modification via Fluoropyridinic Acid For High‐Performance Inverted Perovskite Solar Cells

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

Published: Oct. 31, 2024

Abstract The uncontrolled crystallization of perovskite generates a significant number internal and interfacial defects, posing major challenge to the performance solar cells (PSCs). In this paper, novel bi‐interfacial modification strategy utilizing 5‐fluoropyridinic acid (FPA) is proposed modulate crystal growth provide defect passivation. It demonstrated that FPA self‐deposited at both top bottom interfaces films during thermal annealing. CO N functional groups in serve as chelating agents, binding closely uncoordinated Pb 2+ /Pb clusters, thereby passivating defects reducing charge recombination interfaces. strong chemical interactions between further stabilize Pb‐I framework, promoting formation high‐quality films, confirmed by situ photoluminescence measurements. Consequently, modified inverted PSCs achieved an exceptional power conversion efficiency (PCE) 25.37%. Moreover, devices retained over 93.17% initial after 3000 h continuous illumination under one‐sun equivalent conditions nitrogen atmosphere. This paper presents promising pathway for enhancing stability through self‐induced approach.

Language: Английский

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Self-assembled hole-selective contact for efficient Sn-Pb perovskite solar cells and all-perovskite tandems

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Self-assembled monolayers (SAMs) have displayed unpredictable potential in efficient perovskite solar cells (PSCs). Yet most of SAMs are largely suitable for pure Pb-based devices, precisely developing promising hole-selective contacts (HSCs) Sn-based PSCs and exploring the underlying general mechanism fundamentally desired. Here, based on prototypical donor-acceptor SAM MPA-BT-BA (BT), oligoether side chains with different length (i.e., methoxy, 2-methoxyethoxy, 2-(2-methoxyethoxy)ethoxy group) were custom-introduced benzothiadiazole unit to produce target acronyms MPA-MBT-BA (MBT), MPA-EBT-BA (EBT), MPA-MEBT-BA (MEBT), respectively, acting as HSCs Sn-Pb all-perovskite tandems. The introduction enables effectively accelerate hole extraction, regulate crystal growth passivate surface defects perovskites. In particular, benefiting from enhanced film quality suppressed interfacial non-radiative recombination losses, EBT-tailored LBG devices yield a champion efficiency 23.54%, enabling 28.61% monolithic tandems an impressive VOC 2.155 V excellent operational stability well 28.22%-efficiency 4-T development is highly desirable. authors report self-assembled achieve operationally stable

Language: Английский

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Self-assembled materials with an ordered hydrophilic bilayer for high performance inverted Perovskite solar cells

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

While self-assembled material based inverted perovskite solar cells have surpassed power conversion efficiencies of 26%, enhancing their performance in large-area configurations remains a significant challenge. In this work, we report hole-selective layer 4-(7H-dibenzo[c,g]carbazol-7-yl)phenyl)phosphonic acid, with π-expanded conjugation. The enhanced intermolecular π–π interactions facilitate the self-assembly acid molecules to form an ordered bilayer hydrophilic surface, which passivates buried interface defect and enables high-quality preparation, while simultaneously interfacial charge extraction transport. certified efficiency small-area (0.0715 cm2) device is 26.39% high stability. Furthermore, 25.21% achieved for 99.12 mm2 large area device. Qu et al. conjugation as hole selective cells. transport enable 7.15 - -devices, respectively.

Language: Английский

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Perovskite solar cells

Nature Reviews Methods Primers, Journal Year: 2025, Volume and Issue: 5(1)

Published: Jan. 16, 2025

Language: Английский

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Key Materials and Fabrication Strategies for High-Performance Dye-Sensitized Solar Cells: Comprehensive Comparison and Perspective

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 881 - 895

Published: Jan. 22, 2025

For more than three decades, dye-sensitized solar cells (DSSCs) have attracted numerous researchers as viable alternatives in photovoltaic technology. It offers several advantages, such using eco-friendly materials, inexpensive processing techniques, indoor potentials, and integrating photovoltaics into building applications. Nevertheless, DSSCs will require further development manufacturing methods materials to remain competitive with other thin-film technologies that offer high efficiency. is essential give an overview of the latest developments this area highlight primary elements required for realizing high-performance technologies, photoanode modification, dye formulation, electrolyte optimization. Recent advancements shown promising improvements copper-based electrolytes, new interface like preadsorbents or postadsorbents has also opened possibilities DSSCs. Here, we comprehensively compare discuss key device fabrication processes present future research perspectives.

Language: Английский

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Enlarging moment and regulating orientation of buried interfacial dipole for efficient inverted perovskite solar cells

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 1, 2025

Carrier transport and recombination at the buried interface of perovskite have seriously restricted further development inverted solar cells (PSCs). Herein, an interfacial dipolar chemical bridge strategy to address this issue is presented. 2-(Diphenylphosphino) acetic acid (2DPAA) selected as linker reconstruct dipole, which effectively enlarges dipole moment 5.10 D optimizes a positive orientation, thereby accelerating vertical hole transport, suppressing nonradiative promoting crystallization. The champion device yields high power conversion efficiency (PCE) 26.53% (certified 26.02%). Moreover, extended wide-bandgap large-area devices, delivers PCEs 22.02% 24.11%, respectively. optimized devices without encapsulation also demonstrate great long-term shelf operational stability. Our work highlights importance orientation realize efficient stable PSCs. hindered cells. Here, authors employ achieving maximum 24.11% for small-

Language: Английский

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Suppressing wide-angle light loss and non-radiative recombination for efficient perovskite solar cells

Nature Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Language: Английский

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In Situ Reconstructing the Buried Interface for Efficient CsPbI₃ Perovskite Solar Cells

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 703 - 712

Published: Jan. 8, 2025

To CsPbI3 perovskite solar cells, defects from buried interfaces and improper energy band alignment can cause severe carrier recombination hamper further enhancement in efficiency stability. In this work, we develop an situ strategy to reconstruct the interface for n-i-p typed cells. This is derived exchange reaction between 18C6/Cs+ Pb2+, leading formation of 18C6/Pb2+ crystallization process (18C6: 18-crown-6 ether). The as-prepared complex acts as a kind molecular barrier modify TiO2/perovskite passivate under-coordinated Pb2+ iodide vacancies. Additionally, free Br– ions diffuse into lattice film bottom, forming front-surface field suppress recombination. Based on strategy, high 22.14% has been achieved, demonstrating one highest efficiencies cells date. Besides, modified cell maintain 95% its initial after 1500 h MPP testing long-term stability testing, exhibiting excellent operational

Language: Английский

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Minimizing Buried Interface Energy Losses with Post‐Assembled Chelating Molecular Bridges for High‐Performance and Stable Inverted Perovskite Solar Cells

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

Published: March 3, 2025

Abstract Self‐assembled monolayers (SAMs) as hole‐collecting materials have made remarkable progress in inverted perovskite solar cells (PSCs). However, the incomplete coverage of SAMs and non‐intimate interface contact between perovskite/SAMs usually cause inferior characteristics significant energy losses at heterojunction interface. Herein, a post‐assembled chelating molecular bridge strategy using 5‐(9H‐carbazol‐9‐yl)isophthalicacid (CB‐PA) is developed to modify buried It found that CB‐PA can be chemically coupled with MeO‐2PACz through π–π stacking carbazole groups, chelate by forming double C═O···Pb bonds, thus constructing bridge‐connected promote carrier extraction. Simultaneously, fill voids form dense hybrid SAMs, resulting uniform surface potential improved contact. Moreover, treatment also tends induce oriented crystallization films, passivate defects, release lattice stress Consequently, CB‐PA‐based PSCs achieve champion efficiency 25.27% superior operational stability, retaining ≈94% their initial after maximum power point (MPP) tracking (65 °C) for 1000 h ISOS‐L‐2I protocol. This work provides an innovative address challenges high‐performance PSCs.

Language: Английский

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Recent Progress and Advances of Perovskite Crystallization in Carbon‐Based Printable Mesoscopic Solar Cells

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

Published: Jan. 15, 2025

Carbon-based printable mesoscopic solar cells (p-MPSCs) offer significant advantages for industrialization due to their simple fabrication process, low cost, and scalability. Recently, the certified power conversion efficiency of p-MPSCs has exceeded 22%, drawing considerable attention from community. However, key challenge in improving device performance is achieving uniform high-quality perovskite crystallization within mesoporous structure. This review highlights recent advancements p-MPSCs, with an emphasis on controlling kinetics regulating morphology confined mesopores. It first introduces offering a solid foundation understanding behavior. Additionally, summarizes mechanisms crystal nucleation growth, explaining how these processes influence quality perovskites. Furthermore, commonly applied strategies enhancing quality, such as additive engineering, solvent evaporation controlling, post-treatment techniques, are also explored. Finally, proposes several potential suggestions aimed at further refining crystallization, inspiring continued innovation address current limitations advance development p-MPSCs.

Language: Английский

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