Stabilized hole-selective layer for high-performance inverted p-i-n perovskite solar cells

Science, Год журнала: 2023, Номер 382(6668), С. 284 - 289

Опубликована: Окт. 19, 2023

P-i-n geometry perovskite solar cells (PSCs) offer simplified fabrication, greater amenability to charge extraction layers, and low-temperature processing over n-i-p counterparts. Self-assembled monolayers (SAMs) can enhance the performance of p-i-n PSCs but ultrathin SAMs be thermally unstable. We report a robust hole-selective layer comprised nickel oxide (NiOx) nanoparticle film with surface-anchored (4-(3,11-dimethoxy-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (MeO-4PADBC) SAM that improve stabilize NiOx/perovskite interface. The energetic alignment favorable contact binding between NiOx/MeO-4PADBC reduced voltage deficit various compositions led strong interface toughening effects under thermal stress. resulting 1.53-electron-volt devices achieved 25.6% certified power conversion efficiency maintained >90% their initial after continuously operating at 65 degrees Celsius for 1200 hours 1-sun illumination.

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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Ammonium cations with high pKa in perovskite solar cells for improved high-temperature photostability

Nature Energy, Год журнала: 2023, Номер 8(11), С. 1229 - 1239

Опубликована: Сен. 28, 2023

Язык: Английский

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Synergy of 3D and 2D Perovskites for Durable, Efficient Solar Cells and Beyond

Chemical Reviews, Год журнала: 2023, Номер 123(15), С. 9565 - 9652

Опубликована: Июль 10, 2023

Three-dimensional (3D) organic-inorganic lead halide perovskites have emerged in the past few years as a promising material for low-cost, high-efficiency optoelectronic devices. Spurred by this recent interest, several subclasses of such two-dimensional (2D) begun to play significant role advancing fundamental understanding structural, chemical, and physical properties perovskites, which are technologically relevant. While chemistry these 2D materials is similar that 3D their layered structure with hybrid interface induces new emergent can significantly or sometimes subtly be important. Synergistic realized systems combine different exhibiting dimensionalities exploiting intrinsic compatibility. In many cases, weaknesses each alleviated heteroarchitectures. For example, 3D-2D demonstrate novel behavior neither would capable separately. This review describes how structural differences between give rise disparate properties, discusses strategies realizing mixed-dimensional various architectures through solution-processing techniques, presents comprehensive outlook use solar cells. Finally, we investigate applications beyond photovoltaics offer our perspective on perovskite semiconductor unrivaled tunability, efficiency, relevant durability.

Язык: Английский

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Molecular Bridge on Buried Interface for Efficient and Stable Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(34)

Опубликована: Июнь 26, 2023

Abstract The interface of perovskite solar cells (PSCs) is significantly important for charge transfer and device stability, while the buried with impact on film growth has been paid less attention. Herein, we use a molecular modifier, glycocyamine (GDA) to build bridge SnO 2 /perovskite, resulting in superior interfacial contact. This achieved through strongly interaction between GDA , which also appreciably modulates energy level. Moreover, can regulate crystal growth, yielding enlarged grain size absence pinholes, exhibiting substantially reduced defect density. Consequently, PSCs modification demonstrate significant improvement open circuit voltage (close 1.2 V) fill factor, leading an improved power conversion efficiency from 22.60 % 24.70 %. Additionally, stabilities devices under maximum point 85 °C heat both perform better than control devices.

Язык: Английский

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High Open‐Circuit Voltage (1.197 V) in Large‐Area (1 cm²) Inverted Perovskite Solar Cell via Interface Planarization and Highly Polar Self‐Assembled Monolayer

Advanced Energy Materials, Год журнала: 2024, Номер 14(8)

Опубликована: Янв. 2, 2024

Abstract The efficiency loss caused by area scaling is one of the key factors hindering industrial development perovskite solar cells. energy and contact issues in buried interface are main reasons. Here, a new self‐assembled monolayer (SAM), Ph‐4PACz, with large dipole moment (2.32 D) obtained . It found that Ph‐4PACz high polarity can improve band alignment minimize , resulting an open‐circuit voltage ( V oc ) as 1.2 for 1.55 eV perovskite. However, when applied to large‐area devices, fill factor (FF) still suffered from significant attenuation. Therefore, alumina nanoparticles (Al 2 O 3 ‐NPs) introduced between rough FTO substrate further flatness conformal film almost no voids interface, thus promoting low exciton binding energy, fast hot‐carrier extraction non‐radiative recombination. final devices achieved small‐area power conversion (PCE) 25.60% (1 cm PCE 24.61% (certified at 24.48%), which represents highest single device ≥ 1 area. Additionally, mini‐modules stability testing also carried out demonstrate feasibility commercialization.

Язык: Английский

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Hyperbranched polymer functionalized flexible perovskite solar cells with mechanical robustness and reduced lead leakage

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Окт. 13, 2023

Perovskite solar cells (PSCs) are multilayer structures. The interface between electron transport layer and perovskite is the mechanical weakest point in flexible PSCs due to its low fracture energy. Herein, we develop a highly adhesive polyamide-amine-based hyperbranched polymers reinforce interface. energy improved from 1.08 2.13 J·m-2 by with groups dynamic hydrogen bond networks. polymer functionalized achieve superior power conversion efficiencies of 25.05% 23.86% for rigid devices, respectively. Furthermore, contains abundant intramolecular cavities that can capture Pb2+. Pb leakage after cell damage effectively suppressed. Our findings provide insights on designing layers towards high-efficiency, mechanical-stable environment-friendly cells.

Язык: Английский

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Molecular cation and low-dimensional perovskite surface passivation in perovskite solar cells

Nature Energy, Год журнала: 2024, Номер 9(7), С. 779 - 792

Опубликована: Июль 4, 2024

Язык: Английский

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Stable Tin-Based Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2023, Номер 8(4), С. 1896 - 1899

Опубликована: Март 23, 2023

The developments in halide perovskite research target the next era of semiconductors. Photovoltaic solar cells are only one technologies that could be exploiting potential perovskites soon. Stability and toxicity two critical aspects photovoltaic applications because long-lasting lifetime large volumes targeted technologies, such as multijunction with high power conversion efficiency. In this Perspective piece, I discuss how stability can addressed now, incentivizing toward lead-free low-lead formulations. Recent works demonstrated tin is a possible way out issues current give speculative directions for stable tin-based cells.

Язык: Английский

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Realizing 23.9% Flexible Perovskite Solar Cells via Alleviating the Residual Strain Induced by Delayed Heat Transfer

ACS Energy Letters, Год журнала: 2023, Номер 8(9), С. 3750 - 3759

Опубликована: Авг. 14, 2023

Flexible perovskite solar cells (pero-SCs) have aroused widespread interest because of their unique advantages in lightweight and portable electronics applications. However, the delayed heat transfer caused by plastic substrates can severely affect reaction activity diffusivity cations during growth, resulting spatial composition inhomogeneity residual strain film. Here, a cross-linker 4,5-(3-methyloxetane) dicarboxylate imidazole (MZ) is designed to regulate crystallization kinetics precisely for controlling distribution films on substrates. The MZ coordinate with Pb2+ form mesoporous scaffold lead iodide film increase activation energy crystal formation, which inhibit cation top region accelerate downward diffusion. Consequently, compositional be effectively alleviated. Finally, 0.062 1.004 cm2 flexible pero-SCs achieved record power conversion efficiencies 23.94% (certified 23.57%) 21.87% enhanced operational mechanical stability.

Язык: Английский

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