Pros and cons of hole-selective self-assembled monolayers in inverted PSCs and TSCs: extensive case studies and data analysis

Energy & Environmental Science, Год журнала: 2024, Номер 17(17), С. 6157 - 6203

Опубликована: Янв. 1, 2024

HSSAMs with diverse structures, encompassing various anchoring and functional groups, were systematically categorized their multifaceted roles in inverted PSCs TSCs correlation device performance investigated.

Язык: Английский

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Molecular contacts with an orthogonal π-skeleton induce amorphization to enhance perovskite solar cell performance

Nature Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Язык: Английский

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Anchorable Polymers Enabling Ultra‐Thin and Robust Hole‐Transporting Layers for High‐Efficiency Inverted Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Abstract Currently, the development of polymeric hole‐transporting materials (HTMs) lags behind that small‐molecule HTMs in inverted perovskite solar cells (PSCs). A critical challenge is conventional are incapable forming ultra‐thin and conformal coatings like self‐assembly monolayers (SAMs), especially for substrates with rough surface morphology. Herein, we address this by designing anchorable (CP1 to CP5). Specifically, coordinative pyridyl groups introduced as side‐chains on poly‐triarylamine (PTAA) backbone varied contents copolymerization method, resulting chemical interactions between substrates. The strong interaction allows them be processed into ultra‐thin, uniform, robust layers through employing low‐concentration solutions (0.1 mg mL −1 , vs. 2.0–5.0 PTAA), greatly decreasing charge transport losses. Moreover, upon systematically tuning substitution ratio, energy levels, wetting, solution processability, defect passivation capability such simultaneously optimized. Based optimal CP4, achieved highly efficient PSCs power conversion efficiencies (PCEs) up 26.21 %, which par state‐of‐the‐art SAM‐based PSCs. Furthermore, these devices exhibit enhanced stabilities under repeated current–voltage scans reverse bias ageing compared devices.

Язык: Английский

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Fully Conjugated Co‐Self‐Assembled Monolayers for Efficient and Stable Inverted Perovskite Solar Cells

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Abstract [4‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl)butyl]phosphonic acid (Me‐4PACz) consistently exhibits inhomogeneous distribution on the substrate, which makes it a challenge for growth of high‐quality perovskite film, resulting in undesired interfacial losses at buried interfaces. Moreover, flexible alkyl chains Me‐4PACz are not conducive to intermolecular interactions and hinder charge flow. Here, novel molecule with 4‐Methoxy‐N‐(4‐methoxyphenyl)‐N‐phenylaniline (TPA) carbazole backbone, named CzTPA is designed, constituted Co‐SAM Me‐4PACz. The two carboxyls end will act as an anchoring group cover inadequate coverage NiO x . methoxy TPA can passivation uncoordinated Pb 2+ interface by interaction Pb─O. Additionally, be restrained self‐aggregation interacting CzTPA. cooperation realizes more homogeneous , efficient transport, minimize defects. Accordingly, modification significantly enhance efficiency 1.54‐eV PSCs from 23.53% 25.66% sustain 91.4% its original after 1992 h under continuous illumination 65 °C. More importantly, 1.68 eV wide‐bandgap PSC achieved PCE 22.75% good photostability.

Язык: Английский

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Scalable Impregnation Method for Preparing a Self-Assembled Monolayer in High-Performance Vapor-Deposited Lead-Halide Perovskite Solar Cells

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

The power conversion efficiency (PCE) of inverted lead-halide perovskite solar cells (PSCs) via vapor deposition has undergone significant enhancement through the incorporation a self-assembled monolayer (SAM) serving as hole transport layer. To achieve high-performance PSCs, SAM layer needs to maintain dense and high-coverage configuration during fabrication process. Our investigation revealed that solid-vapor reaction, conditions high temperature low pressure can potentially lead migration molecules, particularly those adsorbed on surface but have not yet formed covalent bonds. In this study, overcome limitation, we developed an impregnation process for mixed molecules with (4-(7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (4PADCB) glycine hydrochloride (GH), which reduces agglomeration enhances their strong anchoring ability substrate, thereby maintaining extremely coverage rate even in high-temperature low-pressure environment reactions. Consequently, champion efficiencies 22.15% (0.16 cm2) 19.18% (5 cm × 5 module) are achieved, is highest record PSCs based deposition. Moreover, advantages reusability, good uniformity, cost, very broad commercial prospects.

Язык: Английский

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Implementing a Two‐in‐One Defect Passivation Strategy Utilizing CsX for High‐Performance Printable Carbon‐Based Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 10, 2024

Abstract In the rapidly advancing realm of perovskite solar cells, rectification defects has surfaced as a crucial scientific challenge. The control over defect states, especially in printable mesoscopic cells (p‐MPSCs), is hindered by complexities screen‐printing technology. Here novel “two‐in‐one” passivation strategy presented, through doping TiO 2 paste with cesium halide salts (CsX, where X = F, Cl, Br, I) to integrate all‐inorganic Cs halides, particularly CsF, into electron transport layer p‐MPSCs. Owing robust interaction between F − ions and compared + ions, inability infiltrate lattice, play distinct roles starting from buried interface Specifically, can rectify oxygen vacancies on surface, thus alleviating residual stress at perovskite's interface. Simultaneously, diffuses top mends methylamine vacancies. As result, PCE optimal device, based F‐doped , witnesses significant improvement 16.18% (control) 18.24%. two‐in‐one utilizing CsX well realize rectification, thereby offering promising prospect for enhancement p‐MPSC performance.

Язык: Английский

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Repairing Interfacial Defects in Self‐Assembled Monolayers for High‐Efficiency Perovskite Solar Cells and Organic Photovoltaics through the SAM@Pseudo‐Planar Monolayer Strategy

Advanced Science, Год журнала: 2024, Номер unknown

Опубликована: Июль 30, 2024

Lately, carbazole-based self-assembled monolayers (SAMs) are widely employed as effective hole-selective layers (HSLs) in inverted perovskite solar cells (PSCs). Nevertheless, these SAMs tend to aggregate solvents due their amphiphilic nature, hindering the formation of a monolayer on ITO substrate and impeding passivation deep defects perovskites. In this study, series new including DPA-B-PY, CBZ-B-PY, POZ-B-PY, POZ-PY, POZ-T-PY, POZ-BT-PY synthesized, which interfacial repairers coated atop CNph SAM form robust SAM@pseudo-planar HSL efficient PSCs. The strategy enables well-aligned interface with perovskites, synergistically promoting crystal growth, improving charge extraction/transport, minimizing nonradiative recombination loss. As result, POZ-BT-PY-modified PSC realizes an impressively enhanced efficiency up 24.45% together fill factor 82.63%. Furthermore, wide bandgap achieving over 19% efficiency. Upon treatment monolayer, also demonstrates non-fullerene organic photovoltaics (OPVs) based PM6:BTP-eC9 blend, achieves 17.07%. Importantly, modified PSCs OPVs all show remarkably improved stability under various testing conditions compared control counterparts.

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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Boosting interfacial contact for the NiOx-based inverted perovskite solar cells via D-A type semiconductor

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154011 - 154011

Опубликована: Июль 14, 2024

Язык: Английский

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Reinforcing Coverage of Self‐assembled Monomolecular Layers for Inverted Perovskite Solar Cells with Efficiency of 25.70%

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Дек. 30, 2024

Abstract Self‐assembled monolayers (SAM) as hole transport layers have been widely used in high‐efficiency inverted perovskite solar cells (PSCs) exceeded 26 %. However, the poor coverage and non‐uniform distribution on substrate of SAM further restrict improvement device performance. Herein, we utilize mixed strategy via MeO‐2PACz along with perfluorotripropylamine (FC‐3283) to improve coverage, aiming accelerate carrier transport, promote growth, regulate surface energy levels suppress nonradiative recombination. The champion mixed‐SAM achieves an efficiency 25.70 % (certified 25.6 %) long‐term stability (maintained initial 90 after 1000 h 180 under ISOS‐L‐1 ISOS‐L‐2).

Язык: Английский

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