Interface Modification for Efficient and Stable Inverted Inorganic Perovskite Solar Cells

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

Опубликована: Июнь 7, 2023

Due to their excellent thermal stability and ideal bandgap, metal halide inorganic perovskite based solar cells (PSCs) with inverted structure are considered as an choice for perovskite/silicon tandem cells. However, the power conversion efficiency (PCE) of still lags far behind that conventional n-i-p PSCs due interfacial energy level mismatch high nonradiative charge recombination. Herein, performance is significantly improved by engineering CsPbI3-x Brx films 2-mercapto-1-methylimidazole (MMI). It found mercapto group can preferably react undercoordinated Pb2+ from forming Pb-S bonds, which appreciably reduces surface trap density. Moreover, MMI modification results in a better alignment electron-transporting material, promoting carrier transfer reducing voltage deficit. The above combination open-circuit enhancement 120 mV, yielding champion PCE 20.6% 0.09 cm2 area 17.3% 1 area. Furthermore, ambient, operational heat stabilities also greatly improved. work demonstrates simple but effective approach fabricating highly efficient stable PSCs.

Язык: Английский

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Dipolar Chemical Bridge Induced CsPbI₃ Perovskite Solar Cells with 21.86 % Efficiency

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(18)

Опубликована: Март 4, 2024

Abstract CsPbI 3 perovskite receives tremendous attention for photovoltaic applications due to its ideal band gap and good thermal stability. However, solar cells (PSCs) significantly suffer from photovoltage deficits because of serious interfacial energy losses within the PSCs, which a large extent affects performance PSCs. Herein, dipolar chemical bridge (DCB) is constructed between TiO 2 layers lower thus improve charge extraction The results reveal that DCB could form beneficial dipole layers, optimize energetics perovskite/TiO level alignment Meanwhile, also simultaneously passivate surface defects greatly lowering recombination. Consequently, deficit PSCs largely reduced, leading record efficiency 21.86 % being realized. operation stability improved high‐quality films with released tensile strain obtained after forming

Язык: Английский

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All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments

Advanced Materials, Год журнала: 2024, Номер 36(25)

Опубликована: Март 11, 2024

Abstract All–inorganic perovskite solar cells (PSCs), such as CsPbX 3 , have garnered considerable attention recently, they exhibit superior thermodynamic and optoelectronic stabilities compared to the organic–inorganic hybrid PSCs. However, power conversion efficiency (PCE) of PSCs is generally lower than that PSCs, contain higher defect densities at interface within light‐absorbing layers, resulting in non‐radiative recombination voltage loss. Consequently, regulation has been adopted an important strategy improve device performance stability. This review aims comprehensively summarize recent progresses on well their cutting‐edge applications extreme scenarios. The underlying fundamental mechanisms leading formation crystal structure are firstly discussed, overview literature‐adopted strategies context interface, internal, surface engineering provided. Cutting‐edge environments outer space underwater situations highlighted. Finally, a summary outlook presented future directions for achieving efficiencies stability

Язык: Английский

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Predicting photovoltaic efficiency in Cs-based perovskite solar cells: A comprehensive study integrating SCAPS simulation and machine learning models

Solid State Communications, Год журнала: 2024, Номер 380, С. 115437 - 115437

Опубликована: Янв. 17, 2024

Язык: Английский

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

ACS Energy Letters, Год журнала: 2025, Номер unknown, С. 703 - 712

Опубликована: Янв. 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

Язык: Английский

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Powering the Future: Opportunities and Obstacles in Lead‐Halide Inorganic Perovskite Solar Cells

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 3, 2025

Abstract Efficiency, stability, and cost are crucial considerations in the development of photovoltaic technology for commercialization. Perovskite solar cells (PSCs) a promising third‐generation due to their high efficiency low‐cost potential. However, stability organohalide perovskites remains significant challenge. Inorganic perovskites, based on CsPbX ₃ (X = Br − /I ), have garnered attention excellent thermal optoelectronic properties comparable those perovskites. Nevertheless, inorganic faces several hurdles, including need high‐temperature annealing achieve photoactive α‐phase susceptibility transitioning into nonphotoactive δ‐phase under environmental stressors, particularly moisture. These challenges impede creation high‐efficiency, high‐stability devices using low‐cost, scalable manufacturing processes. This review provides comprehensive background fundamental structural, physical, lead‐halide It discusses latest advancements fabricating PSCs at lower temperatures ambient conditions. Furthermore, it highlights progress state‐of‐the‐art devices, manufactured environments reduced temperatures, alongside simultaneous upscaling PSCs.

Язык: Английский

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Manipulating Intermediate Surface Energy for High‐Performance All‐Inorganic Perovskite Photovoltaics

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract The complete phase transition from DMAPbI 3 and Cs 4 PbI 6 intermediates to the final CsPbI perovskite is pivotal for fabricating high‐quality inorganic films. In this study, reaction energy barrier between sought be reduced by increasing their surface energy, where a perfluorinated compound designed using DFT modeling saturate of effectively prevent crystalline growth. Consequently, smaller with ultrahigh react more energetically facilitate rapid conversion desired phase. It found that resultant shows improved crystallinity morphology, as demonstrated suppressed non‐radiative recombination prolonged carrier lifetimes. As result, optimized solar cells (PSCs) achieve power efficiency (PCE) over 20%, along significantly light thermal stability. This work provides way regulate crystallization dynamics advanced quality perovskites.

Язык: Английский

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Defect Passivation and Lithium Ion Coordination Via Hole Transporting Layer Modification for High Performance Inorganic Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 36(4)

Опубликована: Авг. 24, 2023

Abstract Metal halide inorganic perovskite solar cells (PSCs) have great potential to achieve high efficiency with excellent thermal stability. However, the surface defect traps restrain achievement of open circuit voltage ( V OC ) and power conversion (PCE) devices due severe nonradiative charge recombination. Moreover, state‐of‐the‐art hole transporting layer (HTL) significantly hampers device moisture stability, even though it renders highest cell efficiency. Herein, a one‐stone‐two‐birds strategy is proposed using biocompatible material tryptamine (TA) as an additive in HTL. First, TA bearing electron rich moieties can favorably passivate defects films, reducing trap density prolonging lifetime. It results drastic improvement from 1.192 1.251 V, loss 0.48 V. The corresponding PSCs 21.8% PCE under 100 mW cm −2 illumination. Second, HTL coordinate lithium cations, retarding their reaction increasing stability Consequently, black phase films well preserved, maintain 90% initial after 800 h storage at relative humidity 25–35%, much higher than control devices.

Язык: Английский

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Tailoring Crystallization Dynamics of CsPbI₃ for Scalable Production of Efficient Inorganic Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2023, Номер 34(6)

Опубликована: Окт. 27, 2023

Abstract All‐inorganic perovskite cesium lead triiodide (CsPbI 3 ) with inorganic nature, low‐temperature synthesis, and a suitable bandgap is desirable for high‐performance photovoltaics. However, the scalable production of CsPbI photovoltaics still challenging due to large nucleation energy barrier slow phase transition during unassisted natural crystallization. Here, crystallization dynamics thin films tailored via acetate (PbAc 2 substitution in precursor ink, allowing fabrication efficient all‐inorganic solar cells minimodules. Introducing PbAc enlarges colloid size reduces barrier. Additionally, reactions between dimethylammonium wet film accelerate removal additives generate solvent vapors self‐regulate internal annealing, resulting densely packed, uniform, pinhole‐free over areas. This strategy demonstrates inverted 20.17% efficiency good operational stability (retaining 95.5% initial after continuous operation 1800 h) 15.1%‐efficient minimodules an active area 26.8 cm .

Язык: Английский

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Organic-inorganic hybrid nature enables efficient and stable CsPbI3-based perovskite solar cells

Joule, Год журнала: 2023, Номер 7(12), С. 2905 - 2922

Опубликована: Ноя. 23, 2023

Язык: Английский

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