Minimizing buried interfacial defects for efficient inverted perovskite solar cells

Science, Год журнала: 2023, Номер 380(6643), С. 404 - 409

Опубликована: Апрель 27, 2023

Controlling the perovskite morphology and defects at buried perovskite-substrate interface is challenging for inverted solar cells. In this work, we report an amphiphilic molecular hole transporter, (2-(4-(bis(4-methoxyphenyl)amino)phenyl)-1-cyanovinyl)phosphonic acid, that features a multifunctional cyanovinyl phosphonic acid group forms superwetting underlayer deposition, which enables high-quality films with minimized interface. The resulting film has photoluminescence quantum yield of 17% Shockley-Read-Hall lifetime nearly 7 microseconds achieved certified power conversion efficiency (PCE) 25.4% open-circuit voltage 1.21 volts fill factor 84.7%. addition, 1-square centimeter cells 10-square minimodules show PCEs 23.4 22.0%, respectively. Encapsulated modules exhibited high stability under both operational damp heat test conditions.

Язык: Английский

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Recent progress in the development of high-efficiency inverted perovskite solar cells

NPG Asia Materials, Год журнала: 2023, Номер 15(1)

Опубликована: Май 5, 2023

Abstract Perovskite solar cells (PSCs) have attracted much attention due to their low-cost fabrication and high power conversion efficiency (PCE). However, the long-term stability issues of PSCs remain a significant bottleneck impeding commercialization. Inverted with p-i-n architecture are being actively researched concurrent good decent efficiency. In particular, PCE inverted has improved significantly in recent years is now almost approaching that n-i-p PSCs. This review summarizes progress development high-efficiency PSCs, including perovskite compositions, methods, counter electrode materials (CEMs). Notably, we highlight charge transport (CTMs) effects defect passivation strategies on performance Finally, discuss remaining perspectives

Язык: Английский

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π‐Expanded Carbazoles as Hole‐Selective Self‐Assembled Monolayers for High‐Performance Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2022, Номер 61(51)

Опубликована: Окт. 27, 2022

Carbazole-derived self-assembled monolayers (SAMs) are promising hole-selective materials for inverted perovskite solar cells (PSCs). However, they often possess small dipoles which prohibit them from effectively modulating the workfunction of ITO substrate, limiting PSC photovoltage. Moreover, their properties can be drastically affected by even subtle structural modifications, undermining final performance. Here, we designed two carbazole-derived SAMs, CbzPh and CbzNaph through asymmetric or helical π-expansion improved molecular dipole moment strengthened π-π interaction. The π-expanded has largest dipole, forming densely packed ordered monolayer, facilitated highly assembly observed in its π-scaffold's single crystal. These synergistically modulate crystallization atop tune workfunction. Consequently, champion employing showed an excellent 24.1 % efficiency stability.

Язык: Английский

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Reinforcing self-assembly of hole transport molecules for stable inverted perovskite solar cells

Science, Год журнала: 2024, Номер 383(6688), С. 1236 - 1240

Опубликована: Март 14, 2024

Power conversion efficiencies (PCEs) of inverted perovskite solar cells (PSCs) have been improved by the use a self-assembled monolayer (SAM) hole transport layer. Long-term stability PSCs requires keeping SAM compact under layer during operation. We found that strong polar solvents in precursor desorb if it is anchored on substrates hydrogen-bonded, rather than covalently bonded, hydroxyl groups. used atomic-layer deposition to create an indium tin oxide substrate with fully covalent hydroxyl-covered surface for anchoring, as well trimethoxysilane group exhibited tridentate anchoring substrate. The resulting achieved PCEs 24.8 (certified 24.6) and 23.2% aperture areas 0.08 1.01 square centimeters, respectively. devices retained 98.9 98.2% initial PCE after 1000 hours damp-heat test operation maximum power point tracking at 85°C 1200 standard illumination,

Язык: Английский

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Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%

Advanced Materials, Год журнала: 2022, Номер 35(3)

Опубликована: Ноя. 9, 2022

Among the emerging photovoltaic technologies, rigid perovskite solar cells (PSCs) have made tremendous development owing to their exceptional power conversion efficiency (PCE) of up 25.7%. However, record PCE flexible PSCs (≈22.4%) still lags far behind counterparts and mechanical stabilities are also not satisfactory. Herein, through modifying interface between hole transport layer via pentylammonium acetate (PenAAc) molecule a highly efficient stable inverted PSC is reported. Through synthetic manipulation anion cation, it shown that PenA+ Ac- strong chemical binding with both acceptor donor defects surface-terminating ends on films. The PenAAc-modified achieve 23.68% (0.08 cm2 , certified: 23.35%) high open-circuit voltage (VOC ) 1.17 V. Large-area devices (1.0 realized an 21.52%. Moreover, fabricated show excellent stability under bending, remaining above 91% original even after 5000 bends.

Язык: Английский

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Compact Hole‐Selective Self‐Assembled Monolayers Enabled by Disassembling Micelles in Solution for Efficient Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 35(46)

Опубликована: Июль 24, 2023

Self-assembled monolayers (SAMs) are widely employed as effective hole-selective layers (HSLs) in inverted perovskite solar cells (PSCs). However, most SAM molecules amphiphilic nature and tend to form micelles the commonly used alcoholic processing solvents. This introduces an extra energetic barrier disassemble during binding of on substrate surface, limiting formation a compact SAM. To alleviate this problem for achieving optimal growth, co-solvent strategy carbazole-based solution is developed. effectively increases critical micelle concentration be above enhances reactivity phosphonic acid anchoring group allow densely packed SAMs formed indium tin oxide. Consequently, PSCs derived from using MeO-2PACz, 2PACz, CbzNaph HSLs show universally improved performance, with SAM-derived device champion efficiency 24.98% stability.

Язык: Английский

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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, Год журнала: 2023, Номер 145(13), С. 7528 - 7539

Опубликована: Март 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%.

Язык: Английский

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Multifunctional Hybrid Interfacial Layers for High‐Performance Inverted Perovskite Solar Cells

Advanced Materials, Год журнала: 2023, Номер 35(21)

Опубликована: Фев. 25, 2023

Challenges remain hindering the performance and stability of inverted perovskite solar cells (PSCs), particularly for nonstable interface between lead halide charge extraction metal oxide layer. Herein, a simple yet scalable interfacial strategy to facilitate assemble high-performance PSCs scale-up modules is reported. The hybrid layer containing self-assembly triphenylamine conjugated poly(arylamine) simultaneously improves chemical stability, extraction, energy level alignment hole-selective interface, meanwhile promoting crystallization. Consequently, correspondent achieve remarkable power conversion efficiencies (PCEs) 24.5% 20.7% (aperture area 19.4 cm2 ), respectively. maintain over 80% its initial efficiency under one-sun equivalent illumination 1200 h. This also effective with various bandgaps, demonstrating highest PCE 19.6% 1.76-eV bandgap PSCs. Overall, this work provides obtaining state-of-the-art modules.

Язык: Английский

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Improving the performance of perovskite solar cells with carbon nanotubes as a hole transport layer

Optical Materials, Год журнала: 2023, Номер 138, С. 113702 - 113702

Опубликована: Март 21, 2023

Язык: Английский

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Perovskite Solar Cells: A Review of the Latest Advances in Materials, Fabrication Techniques, and Stability Enhancement Strategies

Micromachines, Год журнала: 2024, Номер 15(2), С. 192 - 192

Опубликована: Янв. 27, 2024

Perovskite solar cells (PSCs) are gaining popularity due to their high efficiency and low-cost fabrication. In recent decades, noticeable research efforts have been devoted improving the stability of these under ambient conditions. Moreover, researchers exploring new materials fabrication techniques enhance performance PSCs various environmental The mechanical flexible is another area that has gained significant attention. latest also focuses on developing tin-based can overcome challenges associated with lead-based perovskites. This review article provides a comprehensive overview advances in materials, techniques, enhancement strategies for PSCs. It discusses progress perovskite crystal structure engineering, device construction, procedures led improvements photo conversion devices. highlights such as poor conditions employed stability. These include use novel charge transport layers encapsulation protect from moisture oxygen. Finally, this critical assessment current state art PSC future prospects technology. concludes great potential alternative conventional silicon-based but require further improve view definitive commercialization.

Язык: Английский

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