Reducing nonradiative recombination for highly efficient inverted perovskite solar cells via a synergistic bimolecular interface

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 4, 2024

Reducing interface nonradiative recombination is important for realizing highly efficient perovskite solar cells. In this work, we develop a synergistic bimolecular interlayer (SBI) strategy via 4-methoxyphenylphosphonic acid (MPA) and 2-phenylethylammonium iodide (PEAI) to functionalize the interface. MPA induces an in-situ chemical reaction at surface forming strong P-O-Pb covalent bonds that diminish defect density upshift Fermi level. PEAI further creates additional negative dipole so more n-type constructed, which enhances electron extraction top With cooperative treatment, greatly minimize through both enhanced passivation improved energetics. The resulting p-i-n device achieves stabilized power conversion efficiency of 25.53% one smallest induced V

Language: Английский

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Defects and Defect Passivation in Perovskite Solar Cells

Molecules, Journal Year: 2024, Volume and Issue: 29(9), P. 2104 - 2104

Published: May 2, 2024

Perovskite solar cells have made significant strides in recent years. However, there are still challenges terms of photoelectric conversion efficiency and long-term stability associated with perovskite cells. The presence defects materials is one the important influencing factors leading to subpar film quality. Adopting additives passivate within an effective approach. Therefore, we first discuss types that occur mechanisms their effect on performance. Then, several used discussed, including ionic compounds, organic molecules, polymers, etc. This review provides guidance for future development more sustainable improve performance

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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Tuning Isomerism Effect in Organic Bulk Additives Enables Efficient and Stable Perovskite Solar Cells

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Jan. 10, 2025

Abstract Organic additives with multiple functional groups have shown great promise in improving the performance and stability of perovskite solar cells. The can passivate undercoordinated ions to reduce nonradiative recombination losses. However, how these synergistically affect enhancement beyond passivation is still unclear. Specifically, isomeric molecules different substitution patterns or molecular shapes remain elusive designing new organic additives. Here, we report two carbazolyl bisphosphonate additives, 2,7-CzBP 3,6-CzBP. isomerism effect on charge transport process was studied. similar effects through interactions, e.g., P = O···Pb, O···H–N N–H···I. further bridge crystallites facilitates transport. Power conversion efficiencies (PCEs) 25.88% 21.04% were achieved for 0.09 cm 2 devices 14 modules after treatment, respectively. exhibited enhanced operational maintaining 95% initial PCE 1000 h continuous maximum power point tracking. This study hints at importance tuning positions which paves way innovation next-generation multifunctional aromatic

Language: Английский

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Enlarging moment and regulating orientation of buried interfacial dipole for efficient inverted perovskite solar cells

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 1, 2025

Carrier transport and recombination at the buried interface of perovskite have seriously restricted further development inverted solar cells (PSCs). Herein, an interfacial dipolar chemical bridge strategy to address this issue is presented. 2-(Diphenylphosphino) acetic acid (2DPAA) selected as linker reconstruct dipole, which effectively enlarges dipole moment 5.10 D optimizes a positive orientation, thereby accelerating vertical hole transport, suppressing nonradiative promoting crystallization. The champion device yields high power conversion efficiency (PCE) 26.53% (certified 26.02%). Moreover, extended wide-bandgap large-area devices, delivers PCEs 22.02% 24.11%, respectively. optimized devices without encapsulation also demonstrate great long-term shelf operational stability. Our work highlights importance orientation realize efficient stable PSCs. hindered cells. Here, authors employ achieving maximum 24.11% for small-

Language: Английский

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Reshaped buried interface by comprehensive passivation for highly efficient perovskite photovoltaics

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150815 - 150815

Published: March 29, 2024

Language: Английский

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Building Scalable Buried Interface for High‐Performance Perovskite Photovoltaic Devices

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

Published: March 29, 2024

Abstract The quality of the buried interface plays a key role in achieving high‐performance perovskite solar cells (PSCs). However, it is challenging to guarantee its on larger area, which pivotal for commercialization PSCs. Here, facile strategy developed modify SnO 2 /perovskite by incorporating L‐Aspartic acid monosodium salt (ASP‐Na) into colloidal dispersion. ASP‐Na with multidentate ligands can coordinate Sn form stable dispersion, inhibiting agglomeration nanoparticles at interface. In addition, coordination between and turn promotes uniform distribution ASP‐Na, facilitates effective passivation defects. Consequently, treatment improves device efficiency from 23.44% 25.47% (certified 25.02%) an aperture area 0.0797 cm without hysteresis enhances operation stability. mini‐module achieves 20.11% 18.30 , demonstrating potential scalability.

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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Facile and sustainable interface modulation via a self-assembly phosphonate molecule for efficient and stable perovskite photovoltaics

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150861 - 150861

Published: March 31, 2024

Language: Английский

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Tailored Multisite Rigid Conjugated Molecules to Anchor Perovskite for Comprehensive Management of Perovskite Crystallization and Defects

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract engineering has emerged as a promising approach to improve the stability and power conversion efficiency of perovskite solar cells (PSCs) by regulating crystallization or defects. Conventional methods typically focus on single functional group, leading deficiency in simultaneously addressing above mentioned two aspects. Here, an innovative using (methylsulfonyl)phenyl)prop‐2‐en‐1‐amine hydroiodide (MSPPAI) is presented concurrently effectively modulate defect passivation. The unique structure MSPPAI, combining rigid conjugated with multisite anchoring groups (─NH 2 ─SO ─), enables precise regulation through strong interaction components. This promotes preferred (100) orientation crystals, enhances grain size, thus improves film quality. Meanwhile, approximate coplanarity further facilitate ordered directional growth. Furthermore, preventing volatile loss coordinating residual Pb 2+ , MSPPAI could stabilize boundaries surfaces reduce defects prevent degradation. Utilizing these mechanisms, corresponding based devices achieves 25.54% exhibits excellent that maintains 93% its initial even after 1600 h under humid conditions. molecular design strategy presents novel for improving PSCs.

Language: Английский

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