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

Advanced Materials, Год журнала: 2024, Номер 36(33)

Опубликована: Июнь 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.

Язык: Английский

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

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 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.

Язык: Английский

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

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: 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, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: Английский

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Progress in passivating selective contacts for heterojunction silicon solar cells

Nano Energy, Год журнала: 2024, Номер unknown, С. 110282 - 110282

Опубликована: Сен. 1, 2024

Язык: 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, Год журнала: 2024, Номер 12(22), С. 12983 - 13058

Опубликована: Янв. 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.

Язык: 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, Год журнала: 2024, Номер 63(46)

Опубликована: Авг. 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

Язык: Английский

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Improving Buried Interface Contact for Inverted Perovskite Solar Cells via Dual Modification Strategy

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 28, 2024

Abstract The non‐wetting issue of the self‐assembled monolayer (SAM) layer can complicate subsequent perovskite deposition and impact device efficiency. This study addresses this challenge using a dual approach involving co‐self‐assembly buffer to enhance wettability interfacial contact buried film. A weakly acidic boronic acid derivative, 4‐N, N‐dimethylbenzeneboronic hydrochloride (4NPBA), is used co‐self‐assemble with regular SAM molecule on ITO FAI further increased film coverage 89%. interface strategy—SAM‐4NPBA/FAI—results in flat dense interface. optimized demonstrates high fill factor 88.35%, power conversion efficiency 25.29%, retains over 99% its initial after 500 h maximum point testing.

Язык: 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, Год журнала: 2024, Номер 8(12)

Опубликована: Май 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.

Язык: Английский

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Fused Carbazole‐based Self‐Assembled Monolayers Enable Efficient Perovskite Solar Cells and Perovskite Light‐Emitting Diodes

Advanced Optical Materials, Год журнала: 2024, Номер 12(33)

Опубликована: Авг. 22, 2024

Abstract Carbazole‐derived self‐assembled monolayers (SAMs) with excellent hole‐extraction and injection properties are promising hole‐transporting materials for perovskite optoelectronic devices, including solar cells (PSCs) light‐emitting diodes (PeLEDs). The performance thermal stability of these SAMs heavily influenced by their chemical structure. Herein, the construction fused carbazole‐based is proposed expanding π‐conjugation carbazole unit application in PSCs PeLEDs. Three proof‐of‐concept designed synthesized, termed XS8 , XS9 XS10 that feature highly rigid planar as donor a conjugated alkene linker. This extension improves planarity, stability, enhances molecular dipole moment. Among these, highest degree conjugation, demonstrated superior perovskite‐based devices. PSC device utilizing achieves maximum power conversion efficiency (PCE) 20.28%, surpassing 17.19% PCE classic 2PACz‐based device. Similarly, PeLED external quantum (EQE) 16.6%, compared to 14.5% PEDOT‐based work provides novel design strategy creating efficient stable optoelectronics other organic electronic

Язык: Английский

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