Stabilizing Lead Halide Perovskites via an Organometallic Chemical Bridge for Efficient and Stable Photovoltaics

ACS Nano, Journal Year: 2024, Volume and Issue: unknown

Published: July 17, 2024

Defects around the surface and grain boundaries of perovskite films normally cause severe nonradiative recombination imbalanced charge carrier transport, further limiting both efficiency stability solar cells (PSCs). To tackle this critical issue, we propose a chemical bridge strategy to reconstruct interface using organometallic molecules. The commercially available molecule bis(diphenylphosphino)ferrocene (FcP2), with unique molecular structure, anchors chelates Pb atoms by forming strong Pb-P bonds passivates surfaces boundaries. Detailed characterization revealed that FcP2 reconstruction can effectively suppress recombination, electron delocalization properties ferrocene core achieve more balanced interfacial transport. resultant N-i-P PSC device outputs close 25% together one best reported operational stabilities, maintaining over 95% initial after 1000 h continuous operation at maximum power point under 1-sun illumination.

Language: Английский

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Crystallization management of CsPbI2Br perovskites by PbAc2-incorporated twice spin-coating process for efficient and stable CsPbI2Br perovskite solar cells

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 97, P. 419 - 428

Published: May 31, 2024

Language: Английский

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The path toward metal-halide perovskite industrialization

Cell Reports Physical Science, Journal Year: 2024, Volume and Issue: 5(10), P. 102245 - 102245

Published: Oct. 1, 2024

SummaryThe advent of metal-halide perovskite solar cells has revolutionized the field photovoltaics. The high power conversion efficiencies exceeding 26% at laboratory scale—mild temperature processing, possibility fabrication on multiple substrates, and easy composition-dependent band-gap tunability make perovskites suitable for both single-junction tandem-multijunction cells. They are attractive in various applications, from utility-scale to building-integrated indoor To bring maturity, next big step is funnel efforts into developing reproducible high-quality materials via high-throughput manufacturing, addressing issues inherent material instability. Another key issue environmental sustainability associated with presence lead. In this perspective, a special focus placed real-world applications photovoltaics, starting selection deposition techniques finally discussing stability how improve it toward wider industrialization.Graphical abstract

Language: Английский

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Effect of BPFz on the Performance of Inorganic Perovskite Film and Solar Cells

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Inorganic perovskite exhibits an appropriate bandgap and excellent light thermal stability, making it ideal top‐cell material for silicon tandem solar cells. However, significant non‐radiative recombination losses due to surface defects in inorganic films, along with phase stability issues humid environments, restrict the efficiency improvement of inverted cells (IPSCs). This work reports preparation efficient, stable IPSCs by using a multifunctional molecule, bis (pentafluorophenyl) zinc (BPFz), as treatment CsPbI 2.85 Br 0.15 films. After BPFz, film undergoes secondary grain growth, significantly increasing size. Simultaneously, BPFz can passivate undercoordinated Pb 2+ , effectively suppressing nonradiative recombination. Additionally, fluorinated phenyl group endows superhydrophobic properties, protecting layer from influence environmental humidity, while also helping suppress ion diffusion within device, enhancing device stability. Ultimately, after increases 18.18 20.22%, V OC 1.169 1.231 V, moisture provides new approach development high‐efficiency future.

Language: Английский

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Regulating the Crystallization Process of Intermediate Phase for Wide-Bandgap Perovskite Reduces Open-Circuit Voltage Deficit

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1321 - 1329

Published: Feb. 19, 2025

Language: Английский

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Synchronous Perovskite Crystallization Regulation and Buried Interface Modification Improve the Stability and Efficiency of a Planar Inorganic Perovskite Solar Cell

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 9, 2025

The numerous defects in inorganic perovskites and inferior buried interfaces result serious nonradiative recombination energy loss, exacerbating the deterioration of performance perovskite solar cells. Here, we develop a facile strategy to simultaneously improve CsPbIBr2 quality by regulating crystallization modify interface forming 6-aminonicotinic acid (6AA) molecular interlayer through adding 6AA into precursor solution. It is found that effectively regulates process because molecules exhibit strong intermolecular interaction with components, resulting compact film improved morphology decreased defects. Meanwhile, are pushed downward during accumulate at form interlayer, which improves contact enhances charge transport interface. improvement modification decrease loss. Consequently, fabricated planar carbon-based cell demonstrates an efficiency 10.97% remarkably promoted long-term stability.

Language: Английский

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Methylammonium-Free Perovskite Photovoltaic Modules

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

For perovskite photovoltaic industrialization, it is essential to simultaneously achieve high conversion efficiency, long-term stability, and scalable fabrication of modules. Halide perovskites with the ABX3 structure are composed A-site monovalent cations, (e.g., formamidinium (FA+), methylammonium (MA+), Cs+), B-site divalent cations (predominantly Pb2+), X-site halide anions. Though incorporated MA can facilitate nucleation growth films, their volatility undermines thermal stability. α-FAPbI3 exhibits an optimal bandgap, but both α-CsPbI3 susceptible converting into nonphotoactive δ-phase at room temperature. However, FACsPbI3 alloy effectively counteracts imperfections in tolerance factor, enabling formation a room-temperature photoactive phase. Hence, development large-area, high-quality, MA-free films remains substantial challenge for efficient This review first discusses impact on phase stability structures subsequently examines film mechanism. Then, we summarize modules highlight advances CsPbX3 (Br–/I–), FAPbI3, FACsPbX3 systems. Finally, propose potential directions challenges toward industrialization.

Language: Английский

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Perovskite solar cells: Organic-based molecules for electron and hole transport materials with machine learning insights

Current Opinion in Colloid & Interface Science, Journal Year: 2024, Volume and Issue: 74, P. 101848 - 101848

Published: Aug. 31, 2024

Language: Английский

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Molecular polymerization strategy for stable perovskite solar cells with low lead leakage

Science Advances, Journal Year: 2025, Volume and Issue: 11(19)

Published: May 7, 2025

Lead leakage and stability are the main challenges for commercialization of perovskite solar cells (PSCs). Here, we propose adding N , ′-bis(acryloyl)cystamine (BAC) to precursor solution, which facilitates formation polymer BAC (PBAC) at grain boundaries during annealing process films. The PBAC can effectively passivate defects reduce risk lead leakage. Consequently, PBAC-modified PSCs achieve an efficiency 25.53% (0.1 square centimeters) (certified 25.24%) 24.03% (1.0 centimeters). Moreover, after 1500 hours continuous maximum power point tracking under simulated AM 1.5 illumination 2000 exposure damp heat conditions (85°C 85% relative humidity), device retains approximately 96 81% its initial conversion efficiency, respectively. In addition, by nearly 72% immersing in water 480 minutes.

Language: Английский

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Oxygen-Mediated (0D) Cs₄PbX₆ Formation during Open-Air Thermal Processing Improves Inorganic Perovskite Solar Cell Performance

ACS Nano, Journal Year: 2024, Volume and Issue: 18(26), P. 16994 - 17006

Published: June 20, 2024

The desire to commercialize perovskite solar cells continues mount, motivating the development of scalable production. Evaluations impact open-air processing have revealed a variety physical changes in fabricated devices─with few having capacity be functionalized. Here, we highlight beneficial role ambient oxygen during thermal metastable γ-CsPbI3-based thin films and devices. Physiochemical-sensitive probes elucidate intercalation formation Pb-O bonds CsPbI3 crystal, entering via iodine vacancies at surface, creating superoxide (O2-) through electron transfer reactions with molecular oxygen, which drives zero-dimensional Cs4PbI6 capping layer annealing (>330 °C). chemical conversion permanently alters film structure, helping shield subsurface from moisture introduces lattice anchoring sites, stabilizing otherwise unstable γ-CsPbI3 films. This functional modification is demonstrated γ-CsPbI2Br cells, boosting operational stability photoconversion efficiency champion devices 12.7 15.4% when annealed dry air. Such findings prompt reconsideration glovebox-based cell research establish scenario where device fabrication can fact greatly benefit oxygen.

Language: Английский

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