Highly‐Stable CsPbI₃ Perovskite Solar Cells with an Efficiency of 21.11% via Fluorinated 4‐Amino‐Benzoate Cesium Bifacial Passivation

Advanced Functional Materials, Год журнала: 2023, Номер 33(44)

Опубликована: Июль 7, 2023

Abstract The poor interface quality between cesium lead triiodide (CsPbI 3 ) perovskite and the electron transport layer limits stability efficiency of CsPbI solar cells (PSCs). Herein, a 4‐amino‐2,3,5,6‐tetrafluorobenzoate (ATFC) is designed as bifacial defect passivator to tailor perovskite/TiO 2 interface. comprehensive experiments demonstrate that ATFC can not only optimize conductivity, mobility, energy band structure TiO by passivation undercoordinated Ti 4+ , oxygen vacancy ( V O ), free OH defects but also promote yield high‐quality film synergistic Pb 2+ with CO group F atom, limiting I − migration via F···I interaction. Benefiting from above interactions, ATFC‐modified device yields champion power conversion (PCE) 21.11% an excellent open‐circuit voltage OC 1.24 V. Meanwhile, optimized PSC maintains 92.74% its initial after aging 800 h in air atmosphere, has almost no attenuation tracking at maximum point for 350 h.

Язык: Английский

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Surface Defects Management by In Situ Etching with Methanol for Efficient Inverted Inorganic Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2023, Номер 33(23)

Опубликована: Март 15, 2023

Abstract Inorganic perovskite solar cells (IPSCs) have developed rapidly due to their good thermal stability and the bandgap suitable for perovskite/silicon tandem cells. However, large open‐circuit voltage (V OC ) deficit derived from surface defects energy level structure mismatch impede development of device performance, especially in P‐I‐N IPSCs. Herein, an innovative situ etching (ISE) treatment method is proposed reduce through methanol without additional passivator. It found that films treated with result a slight excess PbI 2 on inserted into grain boundaries. Therefore, successful decrease by passivation boundary greatly trap density films. And larger work function contributes band bending downward forms gradient alignment at I/N interface, which accelerates extraction charge carriers. As result, efficiency CsPbI 2.85 Br 0.15 inverted IPSC enhanced 16.00% 19.34%, one mostly efficient This provides original idea passivator manage inorganic perovskite.

Язык: Английский

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Enhancing Stability and Efficiency of Inverted Inorganic Perovskite Solar Cells with In‐Situ Interfacial Cross‐Linked Modifier

Advanced Materials, Год журнала: 2024, Номер 36(23)

Опубликована: Фев. 16, 2024

Inverted inorganic perovskite solar cells (PSCs) is potential as the top in tandem configurations, owing to ideal bandgap, good thermal and light stability of perovskites. However, challenges such mismatch energy levels between charge transport layer perovskite, significant non-radiative recombination caused by surface defects, poor water have led urgent need for further improvement performance inverted PSCs. Herein, fabrication efficient stable CsPbI

Язык: Английский

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In Situ Surface Sulfidation of CsPbI₃ for Inverted Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2024, Номер 9(1), С. 329 - 335

Опубликована: Янв. 3, 2024

Inverted CsPbI3 commonly exhibits a more p-type surface than bulk, which induces severe interfacial recombination and, thus, limits the device's Voc and efficiency in inverted perovskite solar cells (PSCs). Here, gradual CsPbI3/PbS heterojunction is constructed to inhibit such through situ chemical sulfidation with N,N′-diphenylthiourea (DPhTA). DPhTA can directly react form PbS induce p- n-type transition at surface, leads energy level bending downward establishing top of region. PSCs exhibit high 1.20 V reach over 20% (stabilized 19.5%), among highest efficiencies PSCs. In addition, strong Pb–S bond well-matched crystal lattice will protect stabilize layer beneath, thereby greatly improving stability. Resulting retain 95% initial whether after maximum power point (MPP) tracking for 1200 h or N2 storage 300 days.

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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Inorganic perovskite/organic tandem solar cells with 25.1% certified efficiency via bottom contact modulation

Nature Energy, Год журнала: 2025, Номер unknown

Опубликована: Март 13, 2025

Язык: Английский

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Moisture Induced Secondary Crystal Growth Boosting the Efficiency of Hole Transport Layer‐Free Carbon‐Based Perovskite Solar Cells beyond 19.5%

Advanced Functional Materials, Год журнала: 2023, Номер 34(1)

Опубликована: Сен. 17, 2023

Abstract Hole transport layer (HTL)‐free carbon‐based perovskite solar cells (C‐PSCs) show promising commercial application potential due to their attractive advantages of low cost and high stability. However, the power conversion efficiency C‐PSCs is relatively low, mainly poor crystalline quality C‐PSC applicable films energy level mismatch between carbon electrode. Herein, a moisture‐induced secondary crystal growth strategy simultaneously improve optimize film proposed. The presence moisture renders surface grains reactive by forming metastable intermediates. It demonstrated that commonly considered harmful intermediates can trigger growth. This results in improved crystallinity, larger grain size, better morphology films, which reduce density defect states also benefit interface contact Furthermore, modulates composition achieve an optimized alignment. As result, this reduces charge recombination loss accelerates process C‐PSCs. Consequently, new record 19.52% achieved for HTL‐free

Язык: Английский

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Recent progress of scalable perovskite solar cells and modules

Energy Reviews, Год журнала: 2022, Номер 1(2), С. 100010 - 100010

Опубликована: Ноя. 4, 2022

The rapid development of perovskite solar cells (PSCs) over the past decade makes it most promising next generation photovoltaic technology. Splendid progress in efficiency and stability has been demonstrated laboratory level, while endeavours are extremely required to enable successful transfer printable PSC technology industry scale toward commercialization. In this work, recent progresses on upscaling PSCs systematically reviewed. Starting with traditional structure, we have analyzed specially designed configuration for modules (PSMs). comprehensive overview assessment provided technologies engineering large-scale preparation, including both solution processing vapor-phase deposition methods. Considering promoting effect material up PSMs, application additive engineering, solvent interface PSMs is systematacially discussed. Moreover, current packaging device lifetime environmental friendliness emphasized. At last, propose prospects challenges commercialization future meet requirements industry.

Язык: Английский

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