Recent Advances in Carbazole‐Based Self‐Assembled Monolayer for Solution‐Processed Optoelectronic Devices

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 21, 2024

Abstract Self‐assembled molecules (SAMs) have shown great potential in the application of optoelectronic devices due to their unique molecular properties. Recently, emerging phosphonic acid‐based SAMs, 2‐(9Hcarbazol‐9‐yl)ethyl]phosphonic acid (2PACz), successfully applied perovskite solar cells (PSCs), organic (OSCs) and light emitting diodes (PeLEDs). More importantly, impressive results based on 2PACz SAMs are reported recently succession. Therefore, it is essential provide an insightful summary promote further development. In this review, molecule design strategies about first concluded. Subsequently, work systematically reviews recent advances its derivatives for single junction PSCs, tandem OSCs PeLEDs. Finally, concludes discusses future challenges develop devices.

Language: Английский

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Self-assembled materials with an ordered hydrophilic bilayer for high performance inverted Perovskite solar cells

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

Published: Jan. 2, 2025

While self-assembled material based inverted perovskite solar cells have surpassed power conversion efficiencies of 26%, enhancing their performance in large-area configurations remains a significant challenge. In this work, we report hole-selective layer 4-(7H-dibenzo[c,g]carbazol-7-yl)phenyl)phosphonic acid, with π-expanded conjugation. The enhanced intermolecular π–π interactions facilitate the self-assembly acid molecules to form an ordered bilayer hydrophilic surface, which passivates buried interface defect and enables high-quality preparation, while simultaneously interfacial charge extraction transport. certified efficiency small-area (0.0715 cm2) device is 26.39% high stability. Furthermore, 25.21% achieved for 99.12 mm2 large area device. Qu et al. conjugation as hole selective cells. transport enable 7.15 - -devices, respectively.

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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Molecular Design of Hole-Collecting Materials for Co-Deposition Processed Perovskite Solar Cells: A Tripodal Triazatruxene Derivative with Carboxylic Acid Groups

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

High-performance and cost-effective hole-collecting materials (HCMs) are indispensable for commercially viable perovskite solar cells (PSCs). Here, we report an anchorable HCM composed of a triazatruxene core connected with three alkyl carboxylic acid groups (3CATAT-C3). In contrast to the phosphonic acid-containing tripodal analog (3PATAT-C3), 3CATAT-C3 molecules can form hydrophilic monolayer on transparent conducting oxide surface, which is beneficial subsequent film deposition in traditional layer-by-layer fabrication process. More importantly, larger diffusion coefficient higher surface energy make suitable simplified, one-step co-deposition process was directly added as part precursor solution. predominantly located at bottom after spin-coating mixed solution, facilitating charge extraction. Devices fabricated by this method exhibit superior performance champion power conversion efficiency over 23%. The unencapsulated devices showed good operational stability (retaining 90% initial output 100 h), thermal durability 95% value heating 105 °C under air), excellent storage (showing no drop 8000 h). Based results time-of-flight secondary-ion mass spectroscopy (ToF-SIMS) order nuclear magnetic resonance (DOSY), elucidated effect anchoring HCMs PSCs well mechanism Our findings provide valuable insights molecular design multifunctional materials, further advancing cells.

Language: Английский

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Progress in passivating selective contacts for heterojunction silicon solar cells

Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110282 - 110282

Published: Sept. 1, 2024

Language: Английский

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Tetrapodal Hole‐Collecting Monolayer Materials Based on Saddle‐Like Cyclooctatetraene Core for Inverted Perovskite Solar Cells

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(46)

Published: Aug. 8, 2024

Abstract Hole‐collecting monolayers have greatly advanced the development of positive‐intrinsic‐negative perovskite solar cells (p‐i‐n PSCs). To date, however, most anchoring groups in reported monolayer materials are designed to bind transparent conductive oxide (TCO) surface, resulting less availability for other functions such as tuning wettability surface. In this work, we developed two anchorable molecules, 4PATTI‐C3 and 4PATTI‐C4 , by employing a saddle‐like indole‐fused cyclooctatetraene π‐core with four phosphonic acid linked through propyl or butyl chains. Both molecules form on TCO substrates. Thanks saddle shape skeleton, were found point upward, hydrophilic surfaces. Compared devices using hole‐collecting monolayer, ‐based exhibit faster hole‐collection process, leading higher power conversion efficiencies up 21.7 % 21.4 mini‐cell (0.1 cm 2 ) mini‐module (1.62 ), respectively, together good operational stability. This work represents how structural modification multipodal could substantially modulate after being adsorbed onto

Language: Английский

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Structural divergence of molecular hole selective materials for viable p-i-n perovskite photovoltaics: a comprehensive review

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(22), P. 12983 - 13058

Published: Jan. 1, 2024

This review focuses on deciphering the structural divergence of organic molecular hole selective materials in determining photovoltaic performance and stability p-i-n type perovskite solar cell devices.

Language: Английский

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Exploring the Interactions at the Interface: Tailoring Carbazole‐Based Self‐Assembled Molecules with Varying Functional Groups for Enhancing the Performance of Inverted Perovskite Solar Cells

Solar RRL, Journal Year: 2024, Volume and Issue: 8(12)

Published: May 18, 2024

Four different carbazole‐based self‐assembled molecules (SAMs) with terminal groups have been designed and synthesized as hole‐selective contacts for inverted perovskite solar cells to investigate their interfacial interactions and, consequently, the performance of devices. Using carbazole core a reference, effect thiophen‐2‐yl phenyl, or hydroxymethyl phenyl attached through moiety, that thiophene directly linked is compared. These new SAMs successfully using cost‐effective starting materials straightforward synthetic method, eliminating need expensive complex purification processes. Subsequently, they applied efficient contact in cells, leading an outstanding power conversion efficiency 19.67% case SAM5, containing carbazole‐core substituted double 2‐phenylthiophene side arms functional group. The detailed characterization interface charge kinetics has allowed determine each substituent.

Language: Английский

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Leveraging Multilayer Hole Selective Layers to Boost Organic Photovoltaic Power Conversion Efficiency

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Hole selective layers (HSLs) play a crucial role in the efficiency of organic photovoltaics (OPVs). Self-assembled monolayers (SAMs) offer powerful approach to engineer interfacial properties HSLs OPVs. In this work, we utilized 2-(9H-carbazol-9-yl)ethyl)phosphonic acid (2PACz) SAM modify ITO/MoO3 interface and surface MoO3, thereby forming multilayer HSLs. 2PACz regulates work function (WF) electrodes, leading more favorable energy level alignment, reduced resistance, facilitated charge carrier transport extraction. The resulting OPV devices demonstrated improved fill factor (FF) power conversion (PCE). Additionally, reduction defects effectively suppressed recombination, ultimately achieving maximum PCE 16.33%. This indicates that design composite with modification is an effective strategy for improving provides ideas further advancing development.

Language: Английский

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Vacuum Processability of Self-Assembled Monolayers and Their Chemical Interaction with Perovskite Interfaces

Energies, Journal Year: 2025, Volume and Issue: 18(7), P. 1782 - 1782

Published: April 2, 2025

Self-assembled monolayers (SAMs) have gained significant attention as an interfacial engineering strategy for perovskite solar cells (PSCs) due to their efficient charge transport ability and work function tunability. While solution-based methods such dip-coating spin-coating are widely used SAM deposition, challenges non-uniform coverage, solvent contamination, limited control over molecular orientation hinder scalability reproducibility. In contrast, vacuum deposition techniques, including thermal evaporation, overcome these limitations by enabling the formation of highly uniform materials with precise thickness arrangement. Importantly, chemical interactions between layers, coordination bonding Pb2+ ions, play important role in passivating surface defects, modulating energy levels, promoting crystallization. These not only enhance wettability but also improve overall quality stability films. This review highlights advantages vacuum-deposited SAMs, strong layers improving properties critical scalable applications.

Language: Английский

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