Stress Release of Single Crystal Arrays Bridged by SAM Interface Toward Highly Mechanically Durable Flexible Perovskite NIR Photodetector

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Abstract Perovskite photodetectors with superior optoelectronic properties, lightweight, and compatibility flexible substrates have attracted much attention in wearable electronics. However, the large bandgap, inherent brittleness, poor environmental stability, weak interfacial adhesion interaction between perovskites hinder application of near‐infrared (NIR) devices. Herein, a universal strategy to enhance performance mechanical stability perovskite NIR photodetector arrays is demonstrated through combination mussel‐inspired self‐assembled monolayer (SAM) bridging interface precise modulation nano‐array size, which enables significantly increase adhesion, crystallinity, crystallographic orientation, reduce stresses single‐crystal arrays. Moreover, inserting paddle‐wheel metal–organic cluster ligands lead an unprecedented small bandgap 1.04 eV, enhanced lattice rigidity, for 2D perovskite. The robustness record are revealed maximum response wavelength 1050 nm, responsivity 1.66 A W −1 , detectivity 6.19 × 10 12 Jones, high fidelity imaging, extra‐long stability. This work pioneers new insight into integration high‐performance mechanically durable

Язык: Английский

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Mesoporous structured MoS2 as an electron transport layer for efficient and stable perovskite solar cells

Nature Nanotechnology, Год журнала: 2024, Номер unknown

Опубликована: Окт. 7, 2024

Язык: Английский

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Inorganic surface passivation strategies of metal halide perovskites

Deleted Journal, Год журнала: 2024, Номер 1(2), С. 207 - 219

Опубликована: Авг. 20, 2024

Abstract Metal halide perovskites have demonstrated considerable promise across various optoelectronic applications. Surface passivation serves as a pivotal strategy to obtain high‐quality perovskite materials, either in manner of bulk thin film or nanocrystal, with superior properties and stability. The current research focus this regard primarily revolves around the use organic molecules passivate surface perovskites. However, always suffer from chemical instability weak secondary bonding modes, resulting an unstable motif. Inorganic possessing more stable structures stronger than their counterparts, offer opportunities construct robust for surfaces. Herein, review, we summarized assessed recent advancements inorganic strategies materials devices, ranging nanocrystals films. By discussing mechanisms behind strategies, aim mechanistic insights guidelines future developments targeted approaches tailored devices.

Язык: Английский

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2D/3D heterojunction engineering for hole transport layer‐free carbon‐based perovskite solar cells

ChemSusChem, Год журнала: 2025, Номер unknown

Опубликована: Янв. 24, 2025

Hole transport layer (HTL)-free carbon-based perovskite solar cells (C-PSCs) own outstanding potential for commercial applications due to their attractive advantages of low cost and superior stability. However, the abundant defects mismatched energy levels at interface perovskite/carbon electrode severely limit device efficiency Constructing a 2D on surface 3D films form 2D/3D heterojunctions has been demonstrated be an effective method passivating optimizing level alignment in almost all kinds PSCs. Due unique structure HTL-free C-PSCs, play especially important roles. This review article summarizes reports C-PSCs. It describes contributions terms roles defect passivation, optimization, stability improvement. Finally, challenges prospects heterojunction further development C-PSCs are highlighted.

Язык: Английский

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Regulating three-layer full carbon electrodes to enhance the cell performance of CsPbI3 perovskite solar cells

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

Опубликована: Апрель 8, 2025

Carbon-based perovskite solar cells exhibit a promising application prospect due to its cost effective and attractive hydrophobic nature chemical inertness, but are still limited unsatisfied device efficiency. Herein, we design triple-layer full-carbon electrode for n-i-p typed cells, which is comprised of modified macroporous carbon layer, highly conductive graphite layer thin dense each undertakes different contribution improving the cell performance. Based on this electrode, inorganic CsPbI3 >19% certified efficiency highest result among carbon-based devices. On one hand, quantum dots decorated macro-porous can realize better energy alignment electrode/spiro-OMeTAD/CsPbI3 interface, other advantageous carrier transporting. Typically, top exhibits significant thermal radiation ability, reduce operational temperature devices by about 10 °C, both from theoretical simulation experimental testing. Thereby, packaged based much photothermal stability at ~70°C accompanied white light emitting diode illumination, no degradation after 2000 h continuous tracking.

Язык: Английский

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Ultrafast Photoexcitation Induced Passivation for Quasi‐2D Perovskite Photodetectors

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 10, 2024

Abstract Quasi‐2D perovskites exhibit great potential in photodetectors due to their exceptional optoelectronic responsivity and stability, compared 3D counterparts. However, the defects are detrimental responsivity, response speed, stability of perovskite photodetectors. Herein, an ultrafast photoexcitation‐induced passivation technique is proposed synergistically reduce dimensionality at surface induce oxygen doping bulk, via tuning photoexcitation intensity. At optimal level, excited electrons holes generate stretching force on Pb─I bonds interlayered [PbI 6 ] − , resulting low dimensional formation, absorptive combined with I vacancies same time. These two induced processes boost carrier transport interface contact performance. The most outstanding device exhibits a fast speed rise/decay time 201/627 ns, peak responsivity/detectivity 163 mA W −1 /4.52 × 10 Jones 325 nm enhanced cycling stability. This work suggests possibility new for high performance 2D optoelectronics.

Язык: Английский

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Recent Advances in Metal Oxide Electron Transport Layers for Enhancing the Performance of Perovskite Solar Cells

Materials, Год журнала: 2024, Номер 17(11), С. 2722 - 2722

Опубликована: Июнь 3, 2024

Perovskite solar cells (PSCs) have attracted considerable interest owing to their low processing costs and high efficiency. A crucial component of these devices is the electron transport layer (ETL), which plays a key role in extracting transmitting light-induced electrons, modifying interfaces, adjusting surface energy levels. This minimizes charge recombination PSCs, critical factor performance. Among various ETL materials, titanium dioxide (TiO

Язык: Английский

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Thermal Stability of Encapsulated Carbon-Based Multiporous-Layered-Electrode Perovskite Solar Cells Extended to Over 5000 h at 85 °C

Materials, Год журнала: 2024, Номер 17(12), С. 3002 - 3002

Опубликована: Июнь 19, 2024

The key to the practical application of organometal–halide crystals perovskite solar cells (PSCs) is achieve thermal stability through robust encapsulation. This paper presents a method significantly extend lifetime over 5000 h at 85 °C by demonstrating an optimal combination encapsulation methods and composition for carbon-based multiporous-layered-electrode (MPLE)-PSCs. We fabricated four types MPLE-PSCs using two structures (over- side-sealing with thermoplastic resin films) compositions ((5-AVA)x(methylammonium (MA))1−xPbI3 (formamidinium (FA))0.9Cs0.1PbI3), analyzed followed ISOS-D-2 protocol. Without encapsulation, FA0.9Cs0.1PbI3 exhibited higher than (5-AVA)x(MA)1−xPbI3. However, reversed phenomenon (that (5-AVA)x(MA)1−xPbI3 became stronger). absorber over-sealing effectively suppressed degradation, resulting in PCE value 91.2% initial after 5072 h. On other hand, another (side-sealing on over- FA0.9Cs0.1PbI3) resulted decreased stability. FACs-based was decomposed from these degradation mechanisms condensation reaction between FA carbon. For side-sealing, space cell encapsulant estimated contain approximately 1,260,000 times more H2O over-sealing, which catalyzed crystals. Our results demonstrate that MA-based PSCs, are generally considered be thermally sensitive, can their proper Therefore, we emphasize finding appropriate technique quite important further device

Язык: Английский

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The Role of Optimal Electron Transfer Layers for Highly Efficient Perovskite Solar Cells—A Systematic Review

Micromachines, Год журнала: 2024, Номер 15(7), С. 859 - 859

Опубликована: Июнь 30, 2024

Perovskite solar cells (PSCs), which are constructed using organic-inorganic combination resources, represent an upcoming technology that offers a competitor to silicon-based cells. Electron transport materials (ETMs), essential PSCs, attracting lot of interest. In this section, we begin by discussing the development PSC framework, would form foundation for requirements ETM. Because their exceptional electronic characteristics and low manufacturing costs, perovskite (PSCs) have emerged as promising proposal future generations thin-film energy. However, PSCs with compact layer (CL) exhibit subpar long-term reliability efficacy. The quality substrate beneath has major impact on how quickly it grows. Therefore, there been interest in modification electron transfer layers create very stable efficient PSCs. This paper examines systemic alteration (ETLs) based employed Also covered functions ETLs creation reliable Achieving larger-sized particles, greater crystallization, more homogenous morphology within films, all correlated performance, will be guided review when they developed further. To increase PSCs' sustainability enable them produce clean energy at levels previously unheard of, difficulties potential paths research also discussed.

Язык: Английский

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How Ammonium Valeric Acid Iodide Additive Can Lead to More Efficient and Stable Carbon‐Based Perovskite Solar Cells: Role of Microstructure and Interfaces?

Solar RRL, Год журнала: 2024, Номер 8(17)

Опубликована: Июль 24, 2024

As perovskite photovoltaic devices can now compete with silicon technology in terms of efficiency, many strategies are investigated to improve their stability. In particular, degradation reactions be hindered by appropriate device encapsulation, architecture, and formulation. Mesoporous architectures a carbon electrode offer plausible solution for the future commercialization solar cells. They represent low‐cost stable high potential large‐scale production. Several studies have already demonstrated mixed 2D/3D ammonium valeric acid iodide‐based MAPbI 3 formulation increase lifetime pure . however not describe mechanisms responsible improvement. Using full set characterization techniques initial state as function time during damp‐heat aging, new insights into performance may observed. With (5‐AVA) 0.05 MA 0.95 PbI , cells very up 3500 h performances essentially results from loss electrical contacts mainly located at interfaces. contrast, neat poor stability is evidenced (T50 = 500 h) bulk layer itself.

Язык: Английский

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