Target Therapy for Buried Interface Enables Stable Perovskite Solar Cells with 25.05% Efficiency

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(39)

Published: July 17, 2023

The buried interface in perovskite solar cells (PSCs) is pivotal for achieving high efficiency and stability. However, it challenging to study optimize the due its non-exposed feature. Here, a facile effective strategy developed modify SnO2 /perovskite by passivating defects modulating carrier dynamics via incorporating formamidine oxalate (FOA) nanoparticles. Both formamidinium ions show longitudinal gradient distribution layer, mainly accumulating at interface, which enables high-quality upper films, minimized defects, superior contacts, matched energy levels between . Significantly, FOA can simultaneously reduce oxygen vacancies tin interstitial on surface FA+ /Pb2+ associated interface. Consequently, treatment significantly improves of PSCs from 22.40% 25.05% their storage- photo-stability. This method provides an target therapy achieve very

Language: Английский

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Compact Hole‐Selective Self‐Assembled Monolayers Enabled by Disassembling Micelles in Solution for Efficient Perovskite Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(46)

Published: July 24, 2023

Self-assembled monolayers (SAMs) are widely employed as effective hole-selective layers (HSLs) in inverted perovskite solar cells (PSCs). However, most SAM molecules amphiphilic nature and tend to form micelles the commonly used alcoholic processing solvents. This introduces an extra energetic barrier disassemble during binding of on substrate surface, limiting formation a compact SAM. To alleviate this problem for achieving optimal growth, co-solvent strategy carbazole-based solution is developed. effectively increases critical micelle concentration be above enhances reactivity phosphonic acid anchoring group allow densely packed SAMs formed indium tin oxide. Consequently, PSCs derived from using MeO-2PACz, 2PACz, CbzNaph HSLs show universally improved performance, with SAM-derived device champion efficiency 24.98% stability.

Language: Английский

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In Situ Self‐Elimination of Defects via Controlled Perovskite Crystallization Dynamics for High‐Performance Solar Cells

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(42)

Published: Aug. 31, 2023

Understanding and controlling crystallization is crucial for high-quality perovskite films efficient solar cells. Herein, the issue of defects in formamidinium lead iodide (FAPbI3 ) formation addressed, focusing on role intermediates. A comprehensive picture structural carrier evolution during demonstrated using situ grazing-incidence wide-angle X-ray scattering, ultraviolet-visible spectroscopy photoluminescence spectroscopy. Three stages are identified: precursors to δ-FAPbI3 intermediate, then α-FAPbI3 , where spontaneously emerge. hydrogen-sulfate-based ionic liquid additive found enable phase-conversion pathway → solvated intermediates which spontaneous generation can be effectively circumvented. This extends initial growth kinetics facilitates solvent-FA+ ion exchange, results self-elimination crystallization. Therefore, improved dynamics larger grain sizes fewer within thin films. Ultimately, high-performance cells, achieving impressive efficiencies 25.14% at 300 K 26.12% 240 K. breakthrough might open up a new era application emerging photovoltaic technology low-temperature environments such as near-space polar regions.

Language: Английский

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Rational molecular design of multifunctional self-assembled monolayers for efficient hole selection and buried interface passivation in inverted perovskite solar cells

Chemical Science, Journal Year: 2024, Volume and Issue: 15(8), P. 2778 - 2785

Published: Jan. 1, 2024

Self-assembled monolayers (SAMs) have been widely employed as the bottom-contact hole-selective layer (HSL) in inverted perovskite solar cells (PSCs). Besides manipulating electrical properties, molecularly engineering SAM provides an opportunity to modulate buried interface. Here, we successfully introduced Lewis-basic oxygen and sulfur heteroatoms through rational molecular design of asymmetric SAMs obtain two novel multifunctional SAMs, CbzBF CbzBT. Detailed characterization single-crystal structures device interfaces shows that enhanced packing, more effective ITO work function adjustment, interface passivation were achieved. Consequently, champion PSC employing CbzBT showed excellent power conversion efficiency (PCE) 24.0% with a high fill factor 84.41% improved stability. This demonstrates feasibility introducing defect-passivating heterocyclic groups into molecules help passivate interfacial defects PSCs. The insights gained from this strategy will accelerate development new HSLs for efficient

Language: Английский

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Strategies for Improving Efficiency and Stability of Inverted Perovskite Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: March 1, 2024

Abstract Perovskite solar cells (PSCs) have attracted widespread research and commercialization attention because of their high power conversion efficiency (PCE) low fabrication cost. The long‐term stability PSCs should satisfy industrial requirements for photovoltaic devices. Inverted with a p‐i‐n architecture exhibit considerable advantages excellent competitive efficiency. continuously broken‐through PCE inverted shows huge application potential. This review summarizes the developments outlines characteristics including charge transport layers (CTLs), perovskite compositions, interfacial regulation strategies. latest effective CTLs, modification, promotion strategies especially under light, thermal, bias conditions are emphatically analyzed. Furthermore, applications structure in high‐efficiency stable tandem, flexible devices, modules main obstacles systematically introduced. Finally, remaining challenges faced by devices discussed, several directions advancing proposed according to development status industrialization requirements.

Language: Английский

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Methods for Passivating Defects of Perovskite for Inverted Perovskite Solar Cells and Modules

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(35)

Published: June 27, 2024

Abstract Inverted perovskite solar cells (PSCs) have attracted considerable attention due to their distinct advantages, including minimal hysteresis, cost‐effectiveness, and suitability for tandem applications. Nevertheless, the solution processing low formation energy of perovskites inevitably lead numerous defects formed at both bulk interfaces layer. These can act as non‐radiative recombination centers, significantly impeding carrier transport posing a substantial obstacle stability further enhancing power conversion efficiency (PCE). This review delves into detailed discussion nature origin characterization techniques employed defect identification. Furthermore, it systematically summarizes methods detection approaches passivating interface within film in inverted PSCs. Finally, this offers perspective on employing upscaling passivation engineering modules. It is hoped provides insights PSCs

Language: Английский

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Dimensional Regulation from 1D/3D to 2D/3D of Perovskite Interfaces for Stable Inverted Perovskite Solar Cells

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7555 - 7564

Published: March 8, 2024

Constructing low-dimensional/three-dimensional (LD/3D) perovskite solar cells can improve efficiency and stability. However, the design selection of LD capping materials are incredibly scarce for inverted (PSCs) because layers often favor hole extraction impede electron extraction. Here, we develop a facile effective strategy to modify surface by passivating defects modulating electrical properties incorporating morpholine hydriodide (MORI) thiomorpholine (SMORI) on surface. Compared with PI treatment that previously developed, one-dimensional (1D) layer derived from is transformed into two-dimensional (2D) (with MORI or SMORI), achieving dimension regulation. It shown 2D SMORI induces more robust passivation stronger n–N homotype 2D/3D heterojunctions, p–i–n cell an 24.55%, which retains 87.6% its initial after 1500 h operation at maximum power point (MPP). Furthermore, 5 × cm2 mini-modules presented, active-area 22.28%. In addition, quantum well structure in increases moisture resistance, suppresses ion migration, improves PSCs' structural environmental

Language: Английский

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Formamidinium Lead Iodide‐Based Inverted Perovskite Solar Cells with Efficiency over 25 % Enabled by An Amphiphilic Molecular Hole‐Transporter

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(16)

Published: Feb. 19, 2024

Formamidinium lead iodide (FAPbI

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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Achieving 19% efficiency in non-fused ring electron acceptor solar cells via solubility control of donor and acceptor crystallization

Nature Energy, Journal Year: 2024, Volume and Issue: unknown

Published: June 21, 2024

Language: Английский

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