Tripodal Triazatruxene Derivative as a Face-On Oriented Hole-Collecting Monolayer for Efficient and Stable Inverted Perovskite Solar Cells

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(13), P. 7528 - 7539

Published: March 22, 2023

Hole-collecting monolayers have drawn attention in perovskite solar cell research due to their ease of processing, high performance, and good durability. Since molecules the hole-collecting monolayer are typically composed functionalized π-conjugated structures, hole extraction is expected be more efficient when π-cores oriented face-on with respect adjacent surfaces. However, strategies for reliably controlling molecular orientation remain elusive. In this work, multiple phosphonic acid anchoring groups were used control a series triazatruxene derivatives chemisorbed on transparent conducting oxide electrode surface. Using infrared reflection absorption spectroscopy metastable atom electron spectroscopy, we found that multipodal align surface, while monopodal counterpart adopts tilted configuration. The was facilitate extraction, leading inverted cells enhanced stability high-power conversion efficiencies up 23.0%.

Language: Английский

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peri-Fused polyaromatic molecular contacts for perovskite solar cells

Nature, Journal Year: 2024, Volume and Issue: 632(8024), P. 301 - 306

Published: July 24, 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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Hole-Transporting Self-Assembled Monolayer Enables Efficient Single-Crystal Perovskite Solar Cells with Enhanced Stability

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(2), P. 950 - 956

Published: Jan. 13, 2023

The difficulty of growing perovskite single crystals in configurations suitable for efficient photovoltaic devices has hampered their exploration as solar cell materials, despite potential to advance technology beyond polycrystalline films through markedly lower defect densities and desirable optoelectronic properties. While film absorbers can be deposited on myriad substrates, fit high-efficiency have only been demonstrated hydrophobic hole-transport layers [HTLs, e.g., poly(triaryl amine) (PTAA)], which severely restricted the avenues enhancing device efficiency stability. Herein, we report growth mixed-cation FA0.6MA0.4PbI3 a hydrophilic self-assembled monolayer {SAM, [2-(3,6-dimethoxy-9H-carbazol-9-yl)ethyl]phosphonic acid), (MeO-2PACz)} HTL surface. Compared with PTAA, MeO-2PACz SAM promotes mechanical adhesion substrate, enabling fabrication inverted cells substantially enhanced operational stability power conversion efficiencies up 23.1%, setting new benchmark single-crystal cells.

Language: Английский

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Versatile Self‐Assembled Molecule Enables High‐Efficiency Wide‐Bandgap Perovskite Solar Cells and Organic Solar Cells

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(23)

Published: May 2, 2023

Abstract Perovskite solar cells (PSCs) and organic (OSCs) face device efficiency losses instability challenges with existing hole transport materials (HTMs). The development of new universal HTMs is in great demand to promote their practical applications. Herein, a versatile self‐assembled molecule (SAM) based HTM designed for record‐high wide‐bandgap (WBG, E g >1.75 eV) PSCs, all‐perovskite tandem (TSCs) OSCs. SAM exhibits high transmission lower‐lying energy level, enabling enhanced interfacial charge transfer suppressed non‐radiative recombination losses. WBG PSCs deliver maximum power conversion (PCE) 18.63% over 90% retention after 250 h continuous work. By stacking the optimal PSC narrow‐bandgap bottom cell, 4‐terminal TSC achieves remarkable 26.24% PCE. More importantly, this impressive generality bulk heterojunction OSCs rivalling PEDOT:PSS, an PCE 18.84% obtained PM6:BTP‐eC9 devices. When scaling up 0.5 cm 2 area (0.71 × 0.71 cm), afford highest 16.33%. This work provides perspective design targeting facile large‐area fabrication.

Language: Английский

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Achieving a high open-circuit voltage of 1.339 V in 1.77 eV wide-bandgap perovskite solar cells via self-assembled monolayers

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(1), P. 202 - 209

Published: Nov. 10, 2023

A self-assembled monolayer of DCB-BPA hole-selective layer facilitates the improved buried-interface quality, leading to a certified V OC 1.339 1.77 eV wide-bandgap perovskite solar cells.

Language: Английский

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Molecular engineering of hole-selective layer for high band gap perovskites for highly efficient and stable perovskite-silicon tandem solar cells

Joule, Journal Year: 2023, Volume and Issue: 7(11), P. 2583 - 2594

Published: Oct. 6, 2023

Language: Английский

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Fully Aromatic Self‐Assembled Hole‐Selective Layer toward Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with Ultraviolet Resistance

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)

Published: Nov. 21, 2023

Abstract Ultraviolet‐induced degradation has emerged as a critical stability concern impeding the widespread adoption of perovskite solar cells (PSCs), particularly in context phase‐unstable wide‐band gap films. This study introduces novel approach by employing fully aromatic carbazole‐based self‐assembled monolayer, denoted (4‐(3,6‐dimethoxy‐9H‐carbazol‐9‐yl)phenyl)phosphonic acid (MeO‐PhPACz), hole‐selective layer (HSL) inverted PSCs. Incorporating conjugated linker plays pivotal role promoting formation dense and highly ordered HSL on substrates, facilitating subsequent interfacial interactions, fostering growth uniform The high‐quality film could effectively suppress non‐radiative recombination, improving hole extraction/transport efficiency. Through these advancements, optimized PSCs, featuring band 1.68 eV, attain an impressive power conversion efficiency (PCE) 21.10 %. Remarkably, MeO‐PhPACz demonstrates inherent UV resistance heightened absorption capabilities, substantially for targeted characteristic holds significance feasibility large‐scale outdoor applications.

Language: Английский

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Self‐Assembled Monolayers of Bi‐Functionalized Porphyrins: A Novel Class of Hole‐Layer‐Coordinating Perovskites and Indium Tin Oxide in Inverted Solar Cells

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(40)

Published: Aug. 19, 2023

Self-assembled monolayers (SAMs) offer the advantage of facile interfacial modification, leading to significant improvements in device performance. In this study, we report design and synthesis a new series carboxylic acid-functionalized porphyrin derivatives, namely AC-1, AC-3, AC-5, present, for first time, strategy exploit large π-moiety porphyrins as backbone interfacing indium tin oxide (ITO) electrode perovskite active layer an inverted solar cell (PSC) configuration. The electron-rich nature facilitates hole transfer formation SAMs, resulting dense surface that minimizes defects. Comprehensive spectroscopic dynamic studies demonstrate double-anchored AC-3 AC-5 enhance SAMs on ITO, passivate layer, function conduits facilitate transfer, thus significantly boosting performance PSCs. champion PSC employing SAM achieves impressive efficiency 23.19 % with high fill factor 84.05 %. This work presents novel molecular engineering functionalizing tune energy levels, dipoles, packing orientations achieve stable efficient Importantly, our comprehensive investigation has unraveled associated mechanisms, offering valuable insights future advancements

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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