Powering the Future: Opportunities and Obstacles in Lead‐Halide Inorganic Perovskite Solar Cells

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Abstract Efficiency, stability, and cost are crucial considerations in the development of photovoltaic technology for commercialization. Perovskite solar cells (PSCs) a promising third‐generation due to their high efficiency low‐cost potential. However, stability organohalide perovskites remains significant challenge. Inorganic perovskites, based on CsPbX ₃ (X = Br − /I ), have garnered attention excellent thermal optoelectronic properties comparable those perovskites. Nevertheless, inorganic faces several hurdles, including need high‐temperature annealing achieve photoactive α‐phase susceptibility transitioning into nonphotoactive δ‐phase under environmental stressors, particularly moisture. These challenges impede creation high‐efficiency, high‐stability devices using low‐cost, scalable manufacturing processes. This review provides comprehensive background fundamental structural, physical, lead‐halide It discusses latest advancements fabricating PSCs at lower temperatures ambient conditions. Furthermore, it highlights progress state‐of‐the‐art devices, manufactured environments reduced temperatures, alongside simultaneous upscaling PSCs.

Language: Английский

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Multiple defects renovation and phase reconstruction of reduced-dimensional perovskites via in situ chlorination for efficient deep-blue (454 nm) light-emitting diodes

Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)

Published: Feb. 26, 2025

Abstract Deep-blue perovskite light-emitting diodes (PeLEDs) based on reduced-dimensional perovskites (RDPs) still face a few challenges including severe trap-assisted nonradiative recombination, sluggish exciton transfer, and undesirable bathochromic shift of the electroluminescence spectra, impeding realization high-performance PeLEDs. Herein, an in situ chlorination (isCl) post-treatment strategy was employed to regulate phase reconstruction renovate multiple defects RDPs, leading superior carrier cooling 0.88 ps, extraordinary binding energy 122.53 meV, higher photoluminescence quantum yield 60.9% for RDP films with deep-blue emission at 450 nm. The regulation is accomplished via fluorine-derived hydrogen bonds that suppress formation small- n phases. Multiple defects, halide vacancies (shallow-state defects) lead-chloride antisite (deep-state defects), are renovated C=O coordination hydroxy-group-derived bonds. Consequently, PeLEDs record maximum external efficiency 6.17% stable 454 nm were demonstrated, representing best-performing

Language: Английский

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Manipulating Intermediate Surface Energy for High‐Performance All‐Inorganic Perovskite Photovoltaics

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Abstract The complete phase transition from DMAPbI 3 and Cs 4 PbI 6 intermediates to the final CsPbI perovskite is pivotal for fabricating high‐quality inorganic films. In this study, reaction energy barrier between sought be reduced by increasing their surface energy, where a perfluorinated compound designed using DFT modeling saturate of effectively prevent crystalline growth. Consequently, smaller with ultrahigh react more energetically facilitate rapid conversion desired phase. It found that resultant shows improved crystallinity morphology, as demonstrated suppressed non‐radiative recombination prolonged carrier lifetimes. As result, optimized solar cells (PSCs) achieve power efficiency (PCE) over 20%, along significantly light thermal stability. This work provides way regulate crystallization dynamics advanced quality perovskites.

Language: Английский

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Influence of Donor Skeleton on Intramolecular Electron Transfer Amount for Efficient Perovskite Solar Cells

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(32)

Published: May 16, 2024

Abstract The passivation of the defects derived from rapid‐crystallization with electron‐donating molecules is always a prerequisite to obtain desirable perovskite films for efficient and stable solar cells, thus, in‐depth understanding on correlations between molecular structure capacity great importance screening passivators. Here, we introduce double‐ended amide molecule into precursor solution modulate crystallization process passivate defects. By regulating intermediate bridging skeletons alkyl, alkenyl benzene groups, results show strength highly depends spin‐state electronic that serves as an intrinsic descriptor determine intramolecular charge distribution by controlling orbital electron transfer donor segment acceptor segment. Upon careful optimization, benzene‐bridged demonstrates superior efficacy improving film quality. As physical proof‐of‐concept, carbon‐based, all‐inorganic CsPbI 2 Br cell delivers significantly increased efficiency 15.51 % remarkably improved stability. Based same principle, champion 24.20 further obtained inverted (Cs 0.05 MA FA 0.9 )Pb(I 0.93 0.07 ) 3 cell. These findings provide new fundamental insights influence modulation effective cells.

Language: Английский

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Ligand‐Pinning Induced Size Modulation of CsPbI₃ Perovskite Quantum Dots for Red Light‐Emitting Diodes

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: July 16, 2024

Abstract Perovskite quantum dots (PQDs) show high potential for new‐generation light‐emitting diodes (LEDs) due to their outstanding optoelectronic properties. Even though the red PQD‐LEDs can be realized through mixing halide in PQDs tune spectroscopies, may suffer from phase separation under a electric field, predominantly affecting LED applications. Herein, ligand‐pinning‐assisted approach is reported spectroscopies of CsPbI 3 PQDs, which vinyl phosphonic acid (VPA) applied as function ligands regulate nucleation and growth during synthesis. Systematically experimental studies theoretical calculations are conducted comprehensively understand functions VPA PQD synthesis, reveals that with binding energy Pb 2+ cations could firmly anchor on surface matrix without desorption, regulating thus resulting tunable being realized. Meanwhile, also renovate defective substantially diminishing trap‐induced nonradiative recombination. Consequently, deliver external efficiency 22.83%, significantly improved compared control devices. This work provides new avenue toward high‐performing LEDs.

Language: Английский

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2D Capping Layer Passivation toward Inorganic CsPbI₃ Perovskite Minimodule

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract Surface termination is so far the mainstream passivating method to enhance performance of CsPbI 3 solar cells. However, surface can hardly achieve effective and homogeneous passivation on large‐area films, which one key challenge toward high‐performance inorganic perovskite modules (PSMs). The strong ionic bond between Cs Pb‐I framework in makes it difficult construct 2D layer film via post treatment, otherwise a classic effectual approach for defect elimination organic–inorganic hybrid perovskites. Herein, novel programmable reconstruction strategy reported that facilely tune using 2‐(1‐cyclohexenyl) ethyl ammonium iodide (CHEAI). In comparison termination, situ formation CHEA 2 PbI 4 by adjusting stoichiometry CHEAI demonstrates more comprehensive effects favorable energy level alignment films. Such construction has greatly facilitated enhancement device performance, especially when scaling up area. optimal PSM (active area 12.44 cm ) based achieves record‐high efficiency 19.32% (certified 18.83%) with much improved stability, endorsing practical promotion this intrinsically stable material.

Language: Английский

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Customizing Aniline‐Derived Molecular Structures to Attain beyond 22% Efficient Inorganic Perovskite Solar Cells

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(42)

Published: July 25, 2024

Abstract The characteristics of the soft component and ionic‐electronic nature in all‐inorganic CsPbI 3‐x Br x perovskite typically lead to a significant number halide vacancy defects ions migration, resulting reduction both photovoltaic efficiency stability. Herein, we present tailored approach which anion‐fixation undercoordinated‐Pb passivation are achieved situ during crystallization by employing molecule derived from aniline, specifically 2‐methoxy‐5‐trifluoromethylaniline (MFA), address above challenges. incorporation MFA into film results pronounced inhibition ion trap density, an enhancement grain size, extension charge carrier lifetime, more favorable alignment energy levels. These advantageous contribute achieving champion power conversion (PCE) 22.14 % for MFA‐based solar cells (PSCs), representing highest reported thus far this type inorganic metal cells, best our knowledge. Moreover, resultant PSCs exhibits higher environmental stability photostability. This strategy is anticipated offer advantages large‐area fabrication, particularly terms simplicity.

Language: Английский

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Surface matrix regulation of perovskite quantum dots for efficient solar cells

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(16), P. 5756 - 5794

Published: Jan. 1, 2024

This review comprehensively discusses the latest advances in surface matrix regulation of perovskite quantum dots and proposes opportunities challenges for high-performance solar cells.

Language: Английский

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Dual‐Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 5, 2024

Abstract The interfacial management in perovskite solar cells (PSCs), including mitigating the carrier transport barrier and suppressing non‐radiative recombination, still remains a significant challenge for efficiency stability enhancement. Herein, by screening family of fluorine (F) terminated dual‐site organic dipole molecules, study aims to gain insight into molecular array toward tunable field. Both experimental theoretical results reveal that these functional molecules can effectively anchor on surface through Lewis acid‐base interaction. In addition, tailored side‐chain with F atoms allows altering constructing well matched perovskite/Spiro‐OMeTAD contact. As result, inserting modulates interface deliver gradient energy level alignment, facilitating extraction transport. optimal trifluoro‐methanesulfonamide mediated N‐i‐P PSCs achieve highest 25.47%, together enhanced operational under 1000 h simulated 1‐sun illumination exposure. These findings are believed provide design sufficient tunability perovskite‐based optoelectronic devices.

Language: Английский

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Customizing Aniline‐Derived Molecular Structures to Attain beyond 22% Efficient Inorganic Perovskite Solar Cells

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: July 25, 2024

The characteristics of the soft component and ionic-electronic nature in all-inorganic CsPbI

Language: Английский

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