Manipulating the crystallization kinetics of halide perovskites for large-area solar modules

Communications Materials, Год журнала: 2024, Номер 5(1)

Опубликована: Июль 23, 2024

Abstract In the last decade, laboratory-scale single-junction perovskite solar cells have achieved a remarkable power conversion efficiency exceeding 26.1%. However, transition to industrial-scale production has unveiled significant gap. The central challenge lies in difficulty of achieving uniform, high-quality films on large scale. To tackle this issue, various innovative strategies for manipulating crystallization emerged recent years. Based an in-depth fundamental understanding nucleation and growth mechanisms large-area prepared through blade/slot-die coating methods, review offers critical examination manipulation modules. Lastly, we explore future avenues aimed at enhancing stability PSMs, thereby steering field toward commercially viable applications.

Язык: Английский

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Modulating Buried Interface to Achieve an Ultra‐High Open Circuit Voltage in Triple Cation Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер 14(44)

Опубликована: Авг. 6, 2024

Abstract This work proposes a methodology to increase the open‐circuit voltage of perovskite solar cells via modulating buried interface using π‐conjugated molecules, featuring push‐pull electronic structure configuration. In planar tin oxide nanocrystal as an electron transport layer, 2‐methyl‐1‐aminobenzene derivatives with 4‐(Heptafluoropropan)‐2‐methylaniline notable not only reduce interfacial energy barrier but also passivate defects at interface. modulation enhances open circuit Cs 0.05 (FA 0.85 MA 0.15 ) 0.95 Pb(I Br 3 (bandgap ≈1.60 eV) cell high value 1.241 V and thus power conversion efficiency 24.16% under standard testing condition. An even higher 25.11% can be achieved when employing in FA 0.9 PbI ≈1.54 cell. The (1.241 V) is among highest triple‐cation which reaches 95% Shockley–Queisser limit. A solar‐to‐CO 11.76% fabricated minimodule driven carbon dioxide electrolyzer. demonstrates potential utilizing for CO 2 clean green environment.

Язык: Английский

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In situ Surface Polishing Enables V_OC Approaching 95% of the Theoretical Limit for Efficient Inverted Perovskite Solar Cells

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Март 31, 2025

Abstract Surface modification of perovskite films by conventional chemical additives suffers from the complexity process and risk secondary contamination, which limits open‐circuit voltage ( V OC ) solar cells (PSCs). The utilization clean‐passivate strategy for polishing has garnered considerable attention in recent years. Nevertheless, this method necessitates incorporation does not ensure their complete removal, may potentially compromise stability devices. Here, a simple additive‐free situ surface (ISSP) is proposed to reconstruct mitigate loss. ISSP treatment, based on green agent 1,1,1,3,3,3‐hexafluoropropan‐2‐ol (HFIP), demonstrated its effectiveness reducing defects, optimizing energy level alignment, improving interfacial contacts. ISSP‐treated PSCs exhibit minimal loss 0.35 V, approaching 95% theoretical limit. As result, high power conversion efficiency (PCE) stability, with PCE 24.13% maintaining 91.1% initial after over 2,500 h N 2 storage (ISOS‐D‐1). Furthermore, treatment applicable flexible (FPSCs) obtain both mechanical robustness.

Язык: Английский

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Difunctional Polymerizable Additive Enables Efficient and Stable Wide‐Bandgap Perovskites for Perovskite/Organic Tandems Solar Cells

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Abstract In perovskite‐organic tandem solar cells, the wide‐bandgap perovskite front subcells with high bromide concentrations suffer from increased defect state density, which adversely affects efficiency and stability of devices. this work, a difunctional polymerizable additive, N‐(3‐(dimethylamino)propyl)‐methacrylamide (DPM), is introduced into 1.86 eV film, where it undergoes in situ thermal polymerization to form polymeric network. Primarily, polymer contains multiple functional groups that interact A‐site cations adjacent chains, creating dynamic hydrogen bond This network effectively passivates grain boundary defects, inhibits ion migration, consequently reduces non‐radiative recombination. addition, storage mixed FA + /MA precursor solution enhanced, as condensation reaction between MA efficiently suppressed by DPM. As result, study achieves power conversion (PCE) 18.19% cells. The device retains 84% its initial after operating at maximum point for 1000 h. Most notably, PCE 25.06% achieved integrating subcell monolithic cell.

Язык: Английский

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Surface Formamidine Cation Immobilization for Efficient FA‐Based Perovskites Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер 14(44)

Опубликована: Авг. 13, 2024

Abstract State‐of‐the‐art perovskite solar cells (PSCs) continue to encounter stability challenges throughout their current commercialization process, primarily due the instable organic components. Especially, surface (interface) imperfections, like undercoordinated Pb 2+ and halide sites, further compromise confinement of cations at provide a rapid pathway for ion migration volatilization, decreasing efficiency. Herein, study has developed Formamidine (FA) cation immobilization strategy through hydrogen bond effect, achieved by post‐treatment piperazine dihydrochloride (PDCl 2 ), obtain stable FA‐based perovskites. The can immobilize FA + bond. Moreover, PDCl induce Cl – doping establish strong coordinating with uncoordinated , reducing imperfections octahedral cage. Such synergistic effect effectively constrains cations, simultaneously alleviates lattice stress. Because improved properties, resultant demonstrates not only outstanding light/thermal stability, but also more pronounced n‐type characteristics uniform potential distribution improving charge transfer dynamics. Finally, champion PSCs exhibit significantly enhanced efficiency from 23.15% 25.52%. these excellent stability: retain 91% initial after over 1000 h maximum power point test.

Язык: Английский

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Minimizing voltage loss for perovskite solar cells via synergistically passivating defects and reinforcing interfacial electric field

Nano Energy, Год журнала: 2024, Номер 131, С. 110245 - 110245

Опубликована: Сен. 10, 2024

Язык: Английский

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Enhanced Electric Field Minimizing Quasi‐Fermi Level Splitting Deficit for High‐Performance Tin‐Lead Perovskite Solar Cells

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract The quasi‐Fermi level splitting (QFLS) deficit caused by the non‐radiative recombination at interface of perovskite/electron transport layer (ETL) can lead to severe open‐circuit voltage ( V OC ) loss and thus decreases efficiency perovskite solar cells (PSCs), however, has received limited attention in inverted tin‐lead PSCs. Herein, strategy constructing an extra‐electric field is presented introducing ferroelectric polymer dipoles (FPD)‐β‐poly(1,1‐difluoroethylene)‐to suppress QFLS deficit. directional polarization FPD enhance built‐in electric (BEF) promote charge transfer perovskite/ETL interface, which effectively suppresses recombination. Furthermore, incorporation facilitates high‐quality crystallization reduces surface energetic disorder. Therefore, half‐stacked device reduced from 62 27 meV after incorporating FPD, optimized achieves 23.44% with a high 0.88 V. Additionally, addition increases activation energy for ion migration, reduce effect migration on long‐term stability device. Consequently, FPD‐incorporated retains 88% initial 1100 h continuous illumination maximum power point (MPP).

Язык: Английский

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Perovskite facet heterojunction solar cells

Joule, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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Organic Molecule Vapor‐Assisted Passivation for Efficient and Stable Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

Abstract Effective suppression of non‐radiative recombination caused by surface defects in perovskite is crucial for achieving high‐efficiency solar cells (PSCs). However, conventional passivators such as organic amine salts are prone to deprotonation amines and rapid reaction with formamidine, leading device degradation. Meanwhile, the solvent processing can also decompose layer due dissolution salts. In this work, an small molecule, 2‐Thiophenacetamide (TAM), features multiple active sites presented. TAM demonstrates ability passivate thin films through sublimation deposition. It demonstrated that solvent‐free method effect thiophene carbonyl group efficiently uncoordinated Pb 2+ , while amino aids stabilizing structures forming hydrogen bonds iodide ions. As a result, vapor treatment enhanced efficiency 25.33%, operational stability maintained at 95% original after continuous operation over 1000 h. Additionally, submodules area 14 cm 2 successfully assembled up 22.17%.

Язык: Английский

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Recycled Upgrading Hole Transport Material Advances Closed‐Loop Sustainable Perovskite Solar Cells

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Developing a thoroughgoing recovery technology that allows simultaneously separating and recovering all functional layers of the end‐of‐life perovskite solar cells (PSCs), in keeping with maintaining potent device efficiency eco‐environment friendliness, is crucial toward sustainability PSCs. Herein, we propose facile closed‐loop recycling strategy to realize acquisition reutilization hole transport material other retrievable components from obsolete PSCs, employing chlorobenzene dimethylformamide sequentially dissolve spiro‐OMeTAD layers. Surprisingly, recycled spiro‐OMeTAD, i.e., oxidized (spiro‐OMeTAD •+ ) endows reinforced conductivity mobility, favorable energy band alignment, mitigated defects, thus resulting expedited extraction lessened nonradiative recombination loss. Along dissolution layers, materials involving Ag, PbI 2 , ITO/SnO are concurrently recovered. Note solubilizers also eliminate alien reagents environmental hazards. The refabricated PSC based on recovered delivers an upgrading power conversion up 23.41% together open circuit voltage 1.17 V, outperforming control fresh (20.77%, 1.11 V). Overall, this holds promise for realizing pushes future PSCs sustainability.

Язык: Английский

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