Sustainable thermal regulation improves stability and efficiency in all-perovskite tandem solar cells

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

Published: May 16, 2024

Abstract Mixed Sn-Pb perovskites have emerged as promising photovoltaic materials for both single- and multi-junction solar cells. However, achieving their scale-up practical application requires further enhancement in stability. We identify that poor thermal conductivity results insufficient transfer, leading to heat accumulation within the absorber layer accelerates degradation. A regulation strategy by incorporating carboranes into is developed; these are electron-delocalized carbon-boron molecules known efficient transfer capability. specifically select ortho -carborane due its low hysteresis. observe existence through perovskite showing a decreasing trend from buried interface top surface, effectively transferring lowering surface temperature around 5 °C under illumination. o- CB also facilitates hole extraction at perovskite/PEDOT:PSS reduces charge recombination. These enable mixed cells exhibit improved stability, retaining 80% of initial efficiencies after aging 85 1080 hours. When integrated monolithic all-perovskite tandems, we achieve over 27%. tandem cell maintains 87% PCE 704 h continuous operation

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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Dual Interface Passivation With Multi‐Site Regulation Toward Efficient and Stable Inverted Perovskite Solar Cells

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

Published: Feb. 23, 2025

Abstract The rapid crystallization process of perovskite produces a large number defects that remain critical factor disturbs the performance solar cells (PSCs). In this research, these challenges are mitigated by introducing multifunctional 2,6‐pyridinedicarboxylic acid chloride (PAC) as an additive into perovskite. During thermal annealing process, predominant accumulation PAC occurs at upper and buried interfaces film. possesses multiple passivating sites facilitate anchoring lead iodine defects, thereby enhancing quality material across both its dual grain boundaries. With unique property, combined with advantages enhanced crystallization, reduced non‐radiative recombination, boosted charge carrier mobility, optimal energy level alignment, PSC achieved power conversion efficiency (PCE) 25.60% maintained more than 90% after 3000 h under one equivalent light 1400 dark high temperature (85 °C). interface passivation strategy provides sustainable solution to stability environmental for commercialization cells.

Language: Английский

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Self‐Induced Bi‐interfacial Modification via Fluoropyridinic Acid For High‐Performance Inverted Perovskite Solar Cells

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

Published: Oct. 31, 2024

Abstract The uncontrolled crystallization of perovskite generates a significant number internal and interfacial defects, posing major challenge to the performance solar cells (PSCs). In this paper, novel bi‐interfacial modification strategy utilizing 5‐fluoropyridinic acid (FPA) is proposed modulate crystal growth provide defect passivation. It demonstrated that FPA self‐deposited at both top bottom interfaces films during thermal annealing. CO N functional groups in serve as chelating agents, binding closely uncoordinated Pb 2+ /Pb clusters, thereby passivating defects reducing charge recombination interfaces. strong chemical interactions between further stabilize Pb‐I framework, promoting formation high‐quality films, confirmed by situ photoluminescence measurements. Consequently, modified inverted PSCs achieved an exceptional power conversion efficiency (PCE) 25.37%. Moreover, devices retained over 93.17% initial after 3000 h continuous illumination under one‐sun equivalent conditions nitrogen atmosphere. This paper presents promising pathway for enhancing stability through self‐induced approach.

Language: Английский

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Synergistic Buried Interface Regulation of Tin–Lead Perovskite Solar Cells via Co-Self-Assembled Monolayers

ACS Nano, Journal Year: 2024, Volume and Issue: 18(35), P. 24306 - 24316

Published: Aug. 22, 2024

Tin-lead (Sn-Pb) perovskite solar cells (PSCs) hold considerable potential for achieving efficiencies near the Shockley-Queisser (S-Q) limit. Notably, inverted structure stands as preferred fabrication method most efficient Sn-Pb PSCs. In this regard, it is imperative to implement a strategic customization of hole selective layer facilitate carrier extraction and refine quality films, which requires effective selectivity favorable interactions with perovskites. Herein, we propose development Co-Self-Assembled Monolayers (Co-SAM) by integrating both [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) glycine at buried contacts. The one-step deposition process employed in Co-SAM ensures uniform coverage, resulting homogeneous surface potential. This attributed molecular occurring between 2PACz processing solution. Furthermore, amine (-NH

Language: Английский

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Dual functionality of charge extraction and interface passivation by self-assembled monolayers in perovskite solar cells

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 6974 - 7016

Published: Jan. 1, 2024

This review overviews the challenges at buried interface of PSCs, defect passivation capabilities SAMs, and its effectiveness compared to other passivating agents.

Language: Английский

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Surface repair of wide-bandgap perovskites for high-performance all-perovskite tandem solar cells

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 93, P. 64 - 70

Published: Feb. 7, 2024

Language: Английский

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Surface Passivation with Tailoring Organic Potassium Salt for Efficient FAPbI₃ Perovskite Solar Cells and Modules

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

Published: June 3, 2024

Abstract Passivating surface defects on perovskite films with tailored functional materials has emerged as one of the most effective strategies for achieving high‐performance solar cells (PSCs). Among existing material selections, potassium salts stand out their passivation surrounding grain boundaries. However, widely used are inorganic and only soluble in highly polar solvents, which limits practical application passivation. Herein, a novel organic salt (KCFSO), multiple groups good solubility low isopropanol, is reported to function post‐treatment agent perovskite. Combined experimental results theoretical calculations, formed intermolecular interactions between KCFSO revealed play vital role determining defect effect. Thus, KCFSO‐modified film shows more uniform potential distribution, dramatically decreased density, improved charge transfer, leading champion power conversion efficiency (PCE) 25.11%, stability derived PSCs. As demonstration scalability, centimeter‐sized PSCs 5 cm × mini‐modules also demonstrate impressive PCEs 24.17% 20.18%, respectively. These findings provide insights into passivator design principles achieve efficient stable photovoltaics.

Language: Английский

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Manipulating the crystallization kinetics of halide perovskites for large-area solar modules

Communications Materials, Journal Year: 2024, Volume and Issue: 5(1)

Published: July 23, 2024

Abstract In the last decade, laboratory-scale single-junction perovskite solar cells have achieved a remarkable power conversion efficiency exceeding 26.1%. However, transition to industrial-scale production has unveiled significant gap. The central challenge lies in difficulty of achieving uniform, high-quality films on large scale. To tackle this issue, various innovative strategies for manipulating crystallization emerged recent years. Based an in-depth fundamental understanding nucleation and growth mechanisms large-area prepared through blade/slot-die coating methods, review offers critical examination manipulation modules. Lastly, we explore future avenues aimed at enhancing stability PSMs, thereby steering field toward commercially viable applications.

Language: Английский

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Efficient Functional Compensation Layer Integrated with HTL for Improved Stability and Performance in Perovskite Solar Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Improving the interface characteristics between hole-transport layer (HTL) and perovskite absorber is crucial for achieving maximum efficiency in inverted solar cells (PSCs). This paper presents an effective functional compensation (FCL) composed of benzothiophene derivatives, particularly 5-(trifluoromethyl)-1-benzothiophene-2-carboxylic acid (TFMBTA); this introduced MeO-2PACz HTL to improve interfacial them. FCL improves charge transfer, hole extraction, deposition by improving surface morphology optimizing energy level alignment. The groups TFMBTA effectively passivate defects. As a result, introduction markedly reduces non-radiative recombination at layer. MeO-2PACz-based PSCs with demonstrated impressive peak power conversion 23.85%, accompanied substantially enhanced open-circuit voltage (Voc), fill factor (FF), long-term stability. Similarly, introducing PEDOT:PSS both stability PSCs, demonstrating universality FCLs across different types HTLs.

Language: Английский

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