Amphoteric Ion Bridged Buried Interface for Efficient and Stable Inverted Perovskite Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)

Published: Nov. 15, 2023

Abstract Synergistic morphology and defects management at the buried perovskite interface are challenging but crucial for further improvement of inverted solar cells (PerSCs). Herein, an amphoteric organic salt, 2‐(4‐fluorophenyl)ethylammonium‐4‐methyl benzenesulfonate (4FPEAPSA), is designed to optimize film energy level alignment interface. 4FPEAPSA treatment promotes growth a void‐free, coarse‐grained, hydrophobic by inducing crystal orientation. Besides, dual‐functional can chemically interact with film, passivate iodine formamidine vacancies, tending revert fermi its defect‐free state. Meanwhile, formation p‐type doping facilitate interfacial charge extraction transport PerSCs reduced carrier recombination loss. Consequently, improves efficiency devices 25.03% better storage, heat, humidity stability. This work contributes strengthening systematic understanding interface, providing synergetic approach realize precise control, effective defect suppression, efficient PerSCs.

Language: Английский

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An MBene Modulating the Buried SnO₂/Perovskite Interface in Perovskite Solar Cells

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(27)

Published: April 18, 2024

The interface of perovskite solar cells (PSCs) plays an important role in transferring and collecting charges. Interface defects are factors affecting the efficiency stability PSCs. Here, buried between SnO

Language: Английский

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A Comprehensive Review of Organic Hole‐Transporting Materials for Highly Efficient and Stable Inverted Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Feb. 7, 2024

Abstract Inverted perovskite solar cells (IPSCs) have attracted unprecedented attention due to their negligible hysteresis, long‐term operational stability, low temperature, and cost‐effective fabrication process, as well wide applications. The power conversion efficiency (PCE) of IPSCs has skyrocketed from 3.9% in 2013 certified 26.1% 2023, which is over the 25.8% regular counterpart, benefiting emergence a great number organic hole‐transporting materials (HTM). This review provides an overview recent development stability IPSCs, including small molecules conjugated conductive polymers. effective strategies for charge‐transport layer films are also discussed. Finally, prospective further outlined, developing novel fabricating techniques meet requirements commercial application.

Language: Английский

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Strain Engineering and Halogen Compensation of Buried Interface in Polycrystalline Halide Perovskites

Research, Journal Year: 2024, Volume and Issue: 7

Published: Jan. 1, 2024

Inverted perovskite solar cells based on weakly polarized hole-transporting layers suffer from the problem of polarity mismatch with precursor solution, resulting in a nonideal wetting surface. In addition to bottom-up growth polycrystalline halide perovskite, this will inevitably worse effects residual strain and heterogeneity at buried interface interfacial carrier transport localized compositional deficiency. Here, we propose multifunctional hybrid pre-embedding strategy improve substrate wettability address unfavorable heterogeneities. By exposing interface, it was found that films markedly reduced because presence organic polyelectrolyte imidazolium salt, which not only realized halogen compensation coordination Pb 2+ but also morphology defect recombination were well regulated. Benefitting above advantages, power conversion efficiency targeted inverted devices bandgap 1.62 eV 21.93% outstanding intrinsic stability. addition, coembedding can be extended 1.55 eV, champion device achieved 23.74%. optimized retained 91% their initial (960 h) when exposed an ambient relative humidity 20%, T80 680 h under heating aging 65 °C, exhibiting elevated durability.

Language: Английский

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Improved Air Stability for High-Performance FACsPbI₃ Perovskite Solar Cells via Bonding Engineering

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(2), P. 2408 - 2416

Published: Jan. 3, 2024

Despite the fact that perovskite solar cells (PSCs) are widely popular due to their superb power conversion efficiency (PCE), further applications still restricted by low stability and high-density defects. Especially, weak binding ion–electron properties of crystals make them susceptible moisture attack under environmental stress. Herein, we report an overall sulfidation strategy via introduction 1-pentanethiol (PT) into film inhibit bulk defects stabilize Pb ions. It has been confirmed thiol groups in PT can uncoordinated ions passivate iodine vacancy forming strong Pb–S bonds, thus reducing nonradiative recombination. Moreover, favorable passivation process also optimizes energy-level arrangement, induces better crystallization, enhances charge extraction full cells. Consequently, PT-modified inverted device delivers a champion PCE 22.46%, which is superior control (20.21%). More importantly, retains 91.5% its initial after storage air for 1600 h over 85% heating at 85 °C 800 h. This work provides new perspective simultaneously improve performance PSCs satisfy commercial applications.

Language: Английский

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Suppressed Defects by Functional Thermally Cross‐Linked Fullerene for High‐Efficiency Tin‐Lead Perovskite Solar Cells

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

Published: July 20, 2024

Mixed tin-lead (Sn-Pb) perovskites have attracted the attention of community due to their narrow bandgap, ideal for photovoltaic applications, especially tandem solar cells. However, oxidation and rapid crystallization Sn

Language: Английский

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Enhancing Open-Circuit Voltage in FAPbI₃ Perovskite Solar Cells via Self-Formation of Coherent Buried Interface FAPbI_xCl_3-x

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The interfaces between the perovskite and charge-transporting layers typically exhibit high defect concentrations, which are primary cause of open-circuit voltage loss.

Language: Английский

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Melamine holding PbI₂ with three “arms”: an effective chelation strategy to control the lead iodide to perovskite conversion for inverted perovskite solar cells

Energy & Environmental Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Herein, we have proposed a novel tridentate chelation strategy to manage the excessive amount of unreacted PbI 2 in perovskite films, achieving inverted PSC device with PCE 25.66% by sequential deposition method.

Language: Английский

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Significance of Formamidinium Incorporation in Perovskite Composition and Its Impact on Solar Cell Efficiency: A Mini‐Review

Advanced Energy and Sustainability Research, Journal Year: 2024, Volume and Issue: 5(8)

Published: April 26, 2024

Perovskite solar cells (PSCs) have gained tremendous research interest recently owing to several advantages, including low material cost, facile solution processability, bandgap tunability, and alluring device efficiency. The organic formamidinium (FA) cation‐based perovskites are mainly considered as one of the potential candidates for charge carrier generation due their excellent properties, such thermal stability than traditional perovskites. However, inevitable unfavorable polymorphism (i.e., α δ ) at room temperature still forms basis numerous works allow fabrication a high‐quality absorber enhances PSCs performance. studies resolve contemporary techniques (e.g., passivation strategy) with recent novel methods presented in this review form essence improvements PSCs. morphology also influences charge‐transfer behavior device's lifetime. Therefore, understanding these properties is essential improve quality avoid many defects. This focuses on structure pure mixed FA various halides, cation's role composition. And comprehensive overview double, triple, quadrupole results proper scientific explanations understand physics.

Language: Английский

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Strategies for Stabilizing Metal Halide Perovskite Light-Emitting Diodes: Bulk and Surface Reconstruction of Perovskite Nanocrystals

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

Published: March 7, 2025

Light-emitting colloidal lead halide perovskite nanocrystals (PeNCs) are considered promising candidates for next-generation vivid displays. However, the operational stability of light-emitting diodes (LEDs) based on PeNCs is still lower than those polycrystalline films, which requires an understanding defect formation in PeNCs, both inside crystal lattice ("bulk") and at surface. Meanwhile, uncontrollable ion redistribution electrochemical reactions under LED operation can be severe, also related to bulk surface quality a well-designed device architecture boost carrier injection balance radiative recombination. In this review, we consider reconstruction by enhancing rigidity rationally selecting ligands. Degradation pathways applied voltage discussed, strategies avoid undesirable migration PeNC films. Subsequently, other critical issues hindering commercial application LEDs including toxicity Pb perovskites, scale-up deposition design active-matrix prototypes high-resolution modules.

Language: Английский

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