Low-loss contacts on textured substrates for inverted perovskite solar cells

Nature, Journal Year: 2023, Volume and Issue: 624(7991), P. 289 - 294

Published: Oct. 23, 2023

Language: Английский

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Self-Assembled Monolayers for Interfacial Engineering in Solution-Processed Thin-Film Electronic Devices: Design, Fabrication, and Applications

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(5), P. 2138 - 2204

Published: Feb. 29, 2024

Interfacial engineering has long been a vital means of improving thin-film device performance, especially for organic electronics, perovskites, and hybrid devices. It greatly facilitates the fabrication performance solution-processed devices, including field effect transistors (OFETs), solar cells (OSCs), perovskite (PVSCs), light-emitting diodes (OLEDs). However, due to limitation traditional interfacial materials, further progress these devices is hampered particularly in terms stability, flexibility, sensitivity. The deadlock gradually broken through development self-assembled monolayers (SAMs), which possess distinct benefits transparency, diversity, sensitivity, selectivity, surface passivation ability. In this review, we first showed evolution SAMs, elucidating their working mechanisms structure–property relationships by assessing wide range SAM materials reported date. A comprehensive comparison various growth, fabrication, characterization methods was presented help readers interested applying works. Moreover, recent design applications mainstream electronic OFETs, OSCs, PVSCs OLEDs, summarized. Finally, an outlook prospects section summarizes major challenges SAMs used

Language: Английский

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Toward the Commercialization of Perovskite Solar Modules

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(15)

Published: Jan. 12, 2024

Perovskite (PVSK) photovoltaic (PV) devices are undergoing rapid development and have reached a certified power conversion efficiency (PCE) of 26.1% at the cell level. Tremendous efforts in material device engineering also increased moisture, heat, light-related stability. Moreover, solution-process nature makes fabrication process perovskite feasible compatible with some mature high-volume manufacturing techniques. All these features render solar modules (PSMs) suitable for terawatt-scale energy production low levelized cost electricity (LCOE). In this review, current status cells (PSCs) their potential applications first introduced. Then critical challenges identified commercialization propose corresponding solutions, including developing strategies to realize high-quality films over large area further improve stability meet commercial demands. Finally, directions issues requiring attention future, mainly focusing on dealing toxicity recycling whole device, attainment highly efficient perovskite-based tandem modules, which can reduce environmental impact accelerate LCOE reduction put forwarded.

Language: Английский

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Rapid advances enabling high-performance inverted perovskite solar cells

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(6), P. 399 - 419

Published: May 17, 2024

Language: Английский

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Advantages and challenges of self-assembled monolayer as a hole-selective contact for perovskite solar cells

Materials Futures, Journal Year: 2023, Volume and Issue: 2(1), P. 012105 - 012105

Published: Feb. 13, 2023

Abstract Charge-transporting layers (CTLs) are important in determining the performance and stability of perovskite solar cells (PSCs). Recently, there has been considerable use self-assembled monolayers (SAMs) as charge-selective contacts, especially for hole-selective SAMs inverted PSCs well involving tandem cells. The SAM-based contact shows many advantages over traditional thin-film organic/inorganic CTLs, including reduced cost, low optical electric loss, conformal coating on a rough substrate, simple deposition large-area substrate easy modulation energy levels, molecular dipoles surface properties. incorporation various resulted high-efficiency single junction This topical review summarizes both challenges discusses potential direction future studies.

Language: Английский

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Resolving the Hydrophobicity of the Me-4PACz Hole Transport Layer for Inverted Perovskite Solar Cells with Efficiency >20%

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(9), P. 3860 - 3867

Published: Aug. 25, 2023

A [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz) self-assembled monolayer (SAM) has been employed in perovskite devices demonstrating high efficiencies. However, a uniform layer does not form due to the hydrophobicity of Me-4PACz. Here, we tackle this challenge by adding conjugated polyelectrolyte, poly(9,9-bis(3′-(N,N-dimethyl)-N-ethylammonium-propyl-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)) dibromide (PFN-Br), Me-4PACz specific ratio, defined as Pz:PFN. With mixing engineering strategy using Pz:PFN, PFN-Br interaction with A-site cation is confirmed via solution-state nuclear magnetic resonance studies. The narrow full widths at half-maxima diffraction peaks and photoluminescence spectra films reveal improved crystallization optimal ratio Interestingly, additionally tunes work function built-in voltage solar cells. Devices employing optimized Pz:PFN deliver an open-circuit 1.16 V efficiency >20% for perovskites bandgap 1.6 eV reproducibility concomitant stability.

Language: Английский

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Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(12), P. 5992 - 6002

Published: Jan. 1, 2023

A simple and straightforward interface engineering strategy, using stacked layers of small molecules (2PACz/Me-4PACz) as hole-selective layers, resulted in the formation a dense buried perovskite film.

Language: Английский

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A Universal Strategy of Perovskite Ink ‐ Substrate Interaction to Overcome the Poor Wettability of a Self‐Assembled Monolayer for Reproducible Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(47)

Published: Sept. 4, 2023

Abstract Perovskite solar cells employing [4‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl)butyl]phosphonic acid (Me‐4PACz) self‐assembled monolayer as the hole transport layer have been reported to demonstrate a high device efficiency. However, poor perovskite wetting on Me‐4PACz caused by ink interaction with underlying presents significant challenges for fabricating efficient devices. A triple co‐solvent system comprising dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and N ‐methyl‐2‐pyrrolidone (NMP) is employed improve ‐ coated substrate obtain uniform layer. In comparison DMF‐ DMSO‐based inks, inclusion of NMP shows considerably higher binding energies revealed density‐functional theory calculations. With optimized ratio, devices deliver power conversion efficiencies >20%, 19.5%, ≈18.5% active areas 0.16, 0.72, 1.08 cm 2 , respectively. Importantly, this ink–substrate approach universal helps in obtaining photovoltaic performance other compositions such MAPbI 3 FA 1− x MA PbI 3– y Br MA‐free Cs .

Language: Английский

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The Dual Use of SAM Molecules for Efficient and Stable Perovskite Solar Cells

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

Published: April 18, 2024

Abstract Perovskite solar cells (PSCs) hold significant promise as the next‐generation materials in photovoltaic markets, owing to their ability achieve impressive power conversion efficiencies, streamlined fabrication processes, cost‐effective manufacturing, and numerous other advantages. The utilization of self‐assembled monolayer (SAM) molecules has proven be a success enhancing device efficiency extending stability. This review highlights dual use SAM realm PSCs, which can not only serve charge transport but also act interfacial modulators. These research endeavors encompass wide range applications for various both n‐i‐p p‐i‐n structured providing deep insight into underlying mechanisms. Furthermore, this proposes current challenges future investigations materials. timely thorough seeks provide direction inspiration efforts dedicated ongoing incorporation SAMs field perovskite photovoltaics.

Language: Английский

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Co-adsorbed self-assembled monolayer enables high-performance perovskite and organic solar cells

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

Published: Sept. 1, 2024

Self-assembled monolayers (SAMs) have become pivotal in achieving high-performance perovskite solar cells (PSCs) and organic (OSCs) by significantly minimizing interfacial energy losses. In this study, we propose a co-adsorb (CA) strategy employing novel small molecule, 2-chloro-5-(trifluoromethyl)isonicotinic acid (PyCA-3F), introducing at the buried interface between 2PACz perovskite/organic layers. This approach effectively diminishes 2PACz's aggregation, enhancing surface smoothness increasing work function for modified SAM layer, thereby providing flattened with favorable heterointerface perovskite. The resultant improvements crystallinity, minimized trap states, augmented hole extraction transfer capabilities propelled power conversion efficiencies (PCEs) beyond 25% PSCs p-i-n structure (certified 24.68%). OSCs CA achieve remarkable PCEs of 19.51% based on PM1:PTQ10:m-BTP-PhC6 photoactive system. Notably, universal also been achieved other two popular OSC systems. After 1000-hour maximal point tracking, encapsulated retain approximately 90% 80% their initial PCEs, respectively. introduces facile, rational, effective method to enhance performance SAMs, realizing efficiency breakthroughs both device structure, along improved operational stability. are essential high Here, authors develop molecule provide heterointerface, devices.

Language: Английский

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