Recent Advances in Wide-Bandgap Organic–Inorganic Halide Perovskite Solar Cells and Tandem Application

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Март 21, 2023

Perovskite-based tandem solar cells have attracted increasing interest because of its great potential to surpass the Shockley-Queisser limit set for single-junction cells. In architectures, wide-bandgap (WBG) perovskites act as front absorber offer higher open-circuit voltage (V

Язык: Английский

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Recent Progress in Mixed A‐Site Cation Halide Perovskite Thin‐Films and Nanocrystals for Solar Cells and Light‐Emitting Diodes

Advanced Optical Materials, Год журнала: 2022, Номер 10(14)

Опубликована: Июнь 22, 2022

Abstract Over the past few years, lead‐halide perovskites (LHPs), both in form of bulk thin films and colloidal nanocrystals (NCs), have revolutionized field optoelectronics, emerging at forefront next‐generation optoelectronics. The power conversion efficiency (PCE) halide perovskite solar cells has increased from 3.8% to over 25.7% a short period time is very close theoretical limit (33.7%). At same time, external quantum (EQE) LEDs surpassed 23% 20% for green red emitters, respectively. Despite great progress device efficiencies, photoactive phase instability one major concerns long‐term stability devices limiting their transition commercialization. In this regard, researchers found that LHPs reproducibility performance can be improved by A‐site cation alloying with two or more species, these are named mixed (double, triple, quadruple) perovskites. This review provides state‐of‐the‐art overview different types NCs reported literature, along discussion synthesis, properties, LEDs.

Язык: Английский

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Correlating the perovskite/polymer multi-mode reactions with deep-level traps in perovskite solar cells

Joule, Год журнала: 2022, Номер 6(12), С. 2849 - 2868

Опубликована: Ноя. 4, 2022

Язык: Английский

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Ultralow‐loss Optical Waveguides through Balancing Deep‐Blue TADF and Orange Room Temperature Phosphorescence in Hybrid Antimony Halide Microstructures

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(39)

Опубликована: Авг. 14, 2023

Harnessing the potential of thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) is crucial for developing light-emitting diodes (LEDs), lasers, sensors, many others. However, effective strategies in this domain are still relatively scarce. This study presents a new approach to achieving highly efficient deep-blue TADF (with PLQY 25 %) low-energy orange RTP 90 through fabrication lead-free hybrid halides. class monomeric dimeric 0D antimony halides can be facilely synthesized using bottom-up solution process, requiring only few seconds minutes, which offer exceptional stability nontoxicity. By leveraging adaptable molecular arrangement crystal packing modes, demonstrate ability self-assemble into regular 1D microrod 2D microplate morphologies. self-assembly facilitated by multiple non-covalent interactions between inorganic cores organic shells. Notably, these microstructures exhibit outstanding polarized luminescence function as low-dimensional optical waveguides with remarkably low optical-loss coefficients. Therefore, work not pioneering demonstration halides, but also introduces micro/nanostructures that hold promising applications white LEDs photonic systems.

Язык: Английский

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Multifunctional sulfonium-based treatment for perovskite solar cells with less than 1% efficiency loss over 4,500-h operational stability tests

Nature Energy, Год журнала: 2024, Номер 9(2), С. 172 - 183

Опубликована: Янв. 4, 2024

The stabilization of grain boundaries and surfaces the perovskite layer is critical to extend durability solar cells. Here we introduced a sulfonium-based molecule, dimethylphenethylsulfonium iodide (DMPESI), for post-deposition treatment formamidinium lead films. treated films show improved stability upon light soaking remains in black

Язык: Английский

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Understanding Instability in Formamidinium Lead Halide Perovskites: Kinetics of Transformative Reactions at Grain and Subgrain Boundaries

ACS Energy Letters, Год журнала: 2022, Номер 7(4), С. 1534 - 1543

Опубликована: Март 29, 2022

Transformative and reconstructive reactions impart significant structural changes at particle boundaries of hybrid perovskites, which influence environmental stability optoelectronic properties these materials. Here, we investigate the moisture-induced transformative in formamidinium(FA)-based perovskites FAPbX3 (X = I, Br) show that ambient materials can be adjusted from a few hours to several months. For FAPbI3, roles water vapor, size, light illumination on kinetic pathways cubic (α) transformation hexagonal (δ) phase are analyzed by X-ray diffraction, optical microscopy, photoluminescence, solid-state (ss) NMR spectroscopy techniques. The grain subgrain exhibit different α- → δ-FAPbI3 kinetics. Our study suggests dynamic involves local water-induced dissolution occurring crystal surfaces followed precipitation phase. Insights into structures dynamics kinetically trapped α-|δ-FAPbI3 obtained 1H, 2H, 207Pb ssNMR spectroscopy.

Язык: Английский

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Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells

Science, Год журнала: 2024, Номер 386(6724), С. 898 - 902

Опубликована: Ноя. 21, 2024

Surface passivation has driven the rapid increase in power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, state-of-the-art surface techniques rely on ammonium ligands that suffer deprotonation under light and thermal stress. We developed a library amidinium ligands, interest for their resonance effect–enhanced N–H bonds may resist deprotonation, to stability layers surfaces. This strategy resulted >10-fold reduction ligand equilibrium constant twofold maintenance photoluminescence quantum yield after aging at 85°C illumination air. Implementing this approach, we achieved certified quasi–steady-state PCE 26.3% inverted PSCs; report retention ≥90% 1100 hours continuous 1-sun maximum point operation 85°C.

Язык: Английский

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Two-dimensional perovskite templates for durable, efficient formamidinium perovskite solar cells

Science, Год журнала: 2024, Номер 384(6701), С. 1227 - 1235

Опубликована: Июнь 13, 2024

We present a design strategy for fabricating ultrastable phase-pure films of formamidinium lead iodide (FAPbI 3 ) by lattice templating using specific two-dimensional (2D) perovskites with FA as the cage cation. When pure FAPbI precursor solution is brought in contact 2D perovskite, black phase forms preferentially at 100°C, much lower than standard annealing temperature 150°C. X-ray diffraction and optical spectroscopy suggest that resulting film compresses slightly to acquire (011) interplanar distances perovskite seed. The 2D-templated bulk exhibited an efficiency 24.1% p-i-n architecture 0.5–square centimeter active area exceptional durability, retaining 97% their initial after 1000 hours under 85°C maximum power point tracking.

Язык: Английский

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In Situ and Operando Characterizations of Metal Halide Perovskite and Solar Cells: Insights from Lab-Sized Devices to Upscaling Processes

Chemical Reviews, Год журнала: 2023, Номер 123(6), С. 3160 - 3236

Опубликована: Март 6, 2023

The performance and stability of metal halide perovskite solar cells strongly depend on precursor materials deposition methods adopted during the layer preparation. There are often a number different formation pathways available when preparing films. Since precise pathway intermediary mechanisms affect resulting properties cells, in situ studies have been conducted to unravel involved evolution phases. These contributed development procedures improve structural, morphological, optoelectronic films move beyond spin-coating, with use scalable techniques. To explore degradation devices, operando subjected normal operating conditions, or stressed humidity, high temperatures, light radiation. This review presents an update using wide range imaging, spectroscopic techniques, involving formation/degradation perovskites. Operando also addressed, emphasizing latest results for cells. works demonstrate importance achieve level required scale-up consequent commercial deployment these

Язык: Английский

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Inhibition of defect-induced α-to-δ phase transition for efficient and stable formamidinium perovskite solar cells

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

Опубликована: Сен. 30, 2023

Defects passivation is widely devoted to improving the performance of formamidinium lead triiodide perovskite solar cells; however, effect various defects on α-phase stability still unclear. Here, using density functional theory, we first reveal degradation pathway from α δ phase and investigate energy barrier transition. The simulation results predict that iodine vacancies are most likely trigger degradation, since they obviously reduce α-to-δ transition have lowest formation energies at surface. A water-insoluble oxalate compact layer introduced surface largely suppress collapse through hindering migration volatilization. Furthermore, this strategy reduces interfacial nonradiative recombination boosts efficiency cells 25.39% (certified 24.92%). Unpackaged device can maintain 92% its initial after operation maximum power point under simulated air mass 1.5 G irradiation for 550 h.

Язык: Английский

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