Bimolecularly passivated interface enables efficient and stable inverted perovskite solar cells

Science, Год журнала: 2023, Номер 382(6672), С. 810 - 815

Опубликована: Ноя. 16, 2023

Compared with the n-i-p structure, inverted (p-i-n) perovskite solar cells (PSCs) promise increased operating stability, but these photovoltaic often exhibit lower power conversion efficiencies (PCEs) because of nonradiative recombination losses, particularly at perovskite/C60 interface. We passivated surface defects and enabled reflection minority carriers from interface into bulk using two types functional molecules. used sulfur-modified methylthio molecules to passivate suppress through strong coordination hydrogen bonding, along diammonium repel reduce contact-induced achieved field-effect passivation. This approach led a fivefold longer carrier lifetime one-third photoluminescence quantum yield loss certified quasi-steady-state PCE 25.1% for PSCs stable operation 65°C >2000 hours in ambient air. also fabricated monolithic all-perovskite tandem 28.1% PCE.

Язык: Английский

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Double-side 2D/3D heterojunctions for inverted perovskite solar cells

Nature, Год журнала: 2024, Номер 628(8006), С. 93 - 98

Опубликована: Фев. 21, 2024

Язык: Английский

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25.24%‐Efficiency FACsPbI₃ Perovskite Solar Cells Enabled by Intermolecular Esterification Reaction of DL‐Carnitine Hydrochloride

Advanced Materials, Год журнала: 2023, Номер 35(16)

Опубликована: Фев. 2, 2023

Judicious tailoring of the interface between SnO2 electron-transport layer and perovskite buried surface plays a pivotal role in obtaining highly efficient stable solar cells (PSCs). Herein, DL-carnitine hydrochloride (DL) is incorporated into perovskite/SnO2 to suppress defect-states density. A DL-dimer obtained at by an intermolecular esterification reaction. For film, Cl- can passivate oxygen vacancies (VO ) through electrostatic coupling, while N coordinate with Sn4+ Sn-related defects. FA+ defects via hydrogen bonding Pb-related more efficiently than DL monomer. Upon modification, interfacial are effectively passivated quality resultant film improved. As result, DL-treated device achieves gratifying open-circuit voltage (VOC 1.20 V champion power conversion efficiency (PCE) 25.24%, which record value among all reported FACsPbI3 PSCs date. In addition, unencapsulated devices exhibit charming stability, sustaining 99.20% 90.00% their initial PCEs after aging air for 1200 h continuously operating maximum point tracking 500 h, respectively.

Язык: Английский

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Lessons learned: how to report XPS data incorrectly about lead-halide perovskites

Materials Chemistry Frontiers, Год журнала: 2023, Номер 7(18), С. 3797 - 3802

Опубликована: Янв. 1, 2023

X-Ray photoelectron spectroscopy is a powerful tool for identifying the interactions of additives or surface treatments with components in lead halide perovskites.

Язык: Английский

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Electron injection and defect passivation for high-efficiency mesoporous perovskite solar cells

Science, Год журнала: 2024, Номер 383(6688), С. 1198 - 1204

Опубликована: Март 14, 2024

Printable mesoscopic perovskite solar cells (p-MPSCs) do not require the added hole-transport layer needed in traditional p-n junctions but have also exhibited lower power conversion efficiencies of about 19%. We performed device simulation and carrier dynamics analysis to design a p-MPSC with mesoporous layers semiconducting titanium dioxide, insulating zirconium conducting carbon infiltrated that enabled three-dimensional injection photoexcited electrons into dioxide for collection at transparent conductor layer. Holes underwent long-distance diffusion toward back electrode, this separation reduced recombination contact. Nonradiative bulk dioxide/perovskite interface was by ammonium phosphate modification. The resulting p-MPSCs achieved efficiency 22.2% maintained 97% their initial after 750 hours maximum point tracking 55 ± 5°C.

Язык: Английский

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Tailored Cysteine‐Derived Molecular Structures toward Efficient and Stable Inorganic Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 35(31)

Опубликована: Март 27, 2023

Abstract Surface–defect‐triggered non‐radiative charge recombination and poor stability have become the main roadblock to continued improvement in inorganic perovskite solar cells (PSCs). Herein, culprits are identified on surface by first‐principles calculations, purposefully design a brand‐new passivator, Boc‐S‐4‐methoxy‐benzyl‐l‐cysteine (BMBC), whose multiple Lewis‐based functional groups (NH, S CO) suppress halide vacancies coordinate with undercoordinated Pb 2+ through typical Lewis baseacid reactions. The tailored electron‐donating methoxyl group (CH 3 O–) can cause an increased electron density benzene ring, which strengthens interaction via electrostatic interactions. This BMBC passivation reduce trap density, enlarge grains, prolong lifetime, more suitable energy‐level alignment. In addition, hydrophobic tert‐butyl butoxycarbonyl (Boc‐) ensures that is uniformly covered prevents harmful aggregation steric repulsion at perovskite/hole–transporting layer (HTL) interface, thus providing umbrella resist moisture invasion. Consequently, combination of above increases efficiency CsPbI 3−x Br x PSC from 18.6% 21.8%, highest for this type metal PSCs so far, as far it known. Moreover, device exhibits higher environmental thermal stability.

Язык: Английский

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Passivation strategies for enhancing device performance of perovskite solar cells

Nano Energy, Год журнала: 2023, Номер 115, С. 108731 - 108731

Опубликована: Июль 22, 2023

Язык: Английский

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Green-antisolvent-regulated distribution of p-type self-doping enables tin perovskite solar cells with an efficiency of over 14%

Energy & Environmental Science, Год журнала: 2023, Номер 16(8), С. 3430 - 3440

Опубликована: Янв. 1, 2023

Green antisolvent diethyl carbonate retards the kinetics of solvent–antisolvent interactions, enabling a gradient distribution p-type self-doping perovskite absorber to achieve 14.2%-efficiency Sn-based solar cells.

Язык: Английский

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Recent Progress in Interfacial Dipole Engineering for Perovskite Solar Cells

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Июль 7, 2023

Abstract Design and modification of interfaces have been the main strategies in developing perovskite solar cells (PSCs). Among interfacial treatments, dipole molecules emerged as a practical approach to improve efficiency stability PSCs due their unique versatile abilities control properties. Despite extensive applications conventional semiconductors, working principles design dipoles performance/stability enhancement are lacking an insightful elucidation. In this review, we first discuss fundamental properties electric specific roles PSCs. Then systematically summarize recent progress materials several key achieve efficient stable addition such discussions, also dive into reliable analytical techniques support characterization Finally, highlight future directions potential avenues for research development dipolar through tailored molecular designs. Our review sheds light on importance continued efforts exciting emerging field, which holds great high-performance commercially demanded.

Язык: Английский

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The Promise and Challenges of Inverted Perovskite Solar Cells

Chemical Reviews, Год журнала: 2024, Номер 124(19), С. 10623 - 10700

Опубликована: Авг. 29, 2024

Recently, there has been an extensive focus on inverted perovskite solar cells (PSCs) with a p-i-n architecture due to their attractive advantages, such as exceptional stability, high efficiency, low cost, low-temperature processing, and compatibility tandem architectures, leading surge in development. Single-junction perovskite-silicon (TSCs) have achieved certified PCEs of 26.15% 33.9% respectively, showing great promise for commercial applications. To expedite real-world applications, it is crucial investigate the key challenges further performance enhancement. We first introduce representative methods, composition engineering, additive solvent processing innovation charge transporting layers, interface fabricating high-efficiency stable PSCs. then delve into reasons behind excellent stability Subsequently, we review recent advances TSCs PSCs, including perovskite-Si TSCs, all-perovskite perovskite-organic TSCs. achieve final deployment, present efforts related scaling up, harvesting indoor light, economic assessment, reducing environmental impacts. Lastly, discuss potential PSCs future.

Язык: Английский

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