Buried interface molecular hybrid for inverted perovskite solar cells

Nature, Год журнала: 2024, Номер 632(8025), С. 536 - 542

Опубликована: Июнь 26, 2024

Язык: Английский

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The Dual Use of SAM Molecules for Efficient and Stable Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Апрель 18, 2024

Abstract Perovskite solar cells (PSCs) hold significant promise as the next‐generation materials in photovoltaic markets, owing to their ability achieve impressive power conversion efficiencies, streamlined fabrication processes, cost‐effective manufacturing, and numerous other advantages. The utilization of self‐assembled monolayer (SAM) molecules has proven be a success enhancing device efficiency extending stability. This review highlights dual use SAM realm PSCs, which can not only serve charge transport but also act interfacial modulators. These research endeavors encompass wide range applications for various both n‐i‐p p‐i‐n structured providing deep insight into underlying mechanisms. Furthermore, this proposes current challenges future investigations materials. timely thorough seeks provide direction inspiration efforts dedicated ongoing incorporation SAMs field perovskite photovoltaics.

Язык: Английский

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Designed Additive to Regulated Crystallization for High Performance Perovskite Solar Cell

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(30)

Опубликована: Май 11, 2024

Abstract It is a crucial role for enhancing the power conversion efficiency (PCE) of perovskite solar cells (PSCs) to prepare high‐quality films, which can be achieved by delaying crystallization film. Hence, we designed difluoroacetic anhydride (DFA) as an additive regulating process thus reducing defect formation during film formation. was found DFA reacts with DMSO forming two molecules, difluoroacetate thioether ester (DTE) and acid (DA). The strong bonding DTE ⋅ PbI 2 DA retard formation, monitored through in situ UV/Vis PL tests. By using additives, prepared films low defects. Finally, champion PCE 25.28 % excellent environmental stability, retained 95.75 initial after 1152 h at 25 °C under RH.

Язык: Английский

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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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Reduction of Nonradiative Recombination at Perovskite/C₆₀ Interface in Inverted Perovskite Solar Cells

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Although p‐i‐n type inverted perovskite solar cells (PSCs) achieve excellent photoelectric efficiencies, the nonradiative recombination at perovskite/C 60 interface is still key factor affecting overall efficiency of PSCs. Herein, a synergistic passivation strategy (meta‐fluoro‐phenylethylammonium iodide and piperazine iodide) developed to modify in This facilitates situ reconstruction film obtain smooth flat surface. Furthermore, two molecules work synergistically passivate surface defects, adjust energy levels, bolster electric field, all which reduce losses interface. The optimal PSCs adopting this power conversion 25.85%. (certified value 25.22%). After operating maximum point for 1000 h, 95% initial can be maintained. process universally applicable scalable.

Язык: Английский

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Crystallization regulation and defect suppression of CsPbI2Br perovskite using a dual-functional additive

Applied Physics Letters, Год журнала: 2025, Номер 126(15)

Опубликована: Апрель 1, 2025

Inorganic CsPbI2Br perovskite solar cells have attracted widespread attention due to their outstanding performance and photo-thermal stability. However, the rapid crystallization of solution-processed film often results in poor crystallinity a high density defects, which seriously restrict improvement device performance. Here, we introduce dual-functional additive, 4-amino-5-aminomethyl-2-methylpyrimidine (AMP), regulate reduce defect film. The introduction AMP notably improves morphology promotes preferred crystal orientation. C=N amino groups interact with Pb2+ Br- perovskite, respectively, effectively passivating defects improving carrier lifetime. As result, power conversion efficiency optimized carbon-based hole-transport layer-free reaches 13.30%, exceeds 10.66% control device. environmental light stability is also significantly improved. This work provides valuable insights into development high-performance all-inorganic via additive strategies.

Язык: Английский

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Achieving High‐Quality Perovskite Films with Guanidine‐Based Additives for Efficient and Stable Methylammonium‐Free Perovskite Solar Cells

Advanced Functional Materials, Год журнала: 2024, Номер 34(46)

Опубликована: Авг. 17, 2024

Abstract Power conversion efficiencies (PCEs) of the methylammonium‐free (MA‐free) perovskite solar cells (PSCs) are constantly lagging behind those most extensively researched triple cation mixed PSCs due to their subpar films. Here, two guanidine‐based passivation agents proposed, that are, sulfaguanidine (S‐Gua) and 1‐acetylguanidine (A‐Gua) can be applied optimize film quality MA‐free for minimizing efficiency discrepancy between types PSCs. Through strong coordination with Pb 2+ hydrogen bonding formamidinium (FA + ), additives reduce bulk defects suppress non‐radiative recombination, which in turn enhance charge extraction transfer efficiency. Consequently, S‐Gua‐ A‐Gua‐treated devices achieve PCEs 24.34% 23.77%, respectively. Both greater than control device (23.03%), PCE is comparable best inverted narrower bandgaps. Moreover, S‐Gua‐treated maintain 89.3% 82.0% initial after aging 800 h heating (85 °C) 340 ambient air without any encapsulation, This work offers comprehensive insights into use high‐quality films subsequently state‐of‐the‐art

Язык: Английский

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Effective n-type de-doping of perovskite surface via defect passivation and improved film crystallization for high-efficiency inorganic solar cells

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(34), С. 23067 - 23075

Опубликована: Янв. 1, 2024

An n/n − homojunction at the top perovskite/carbon interface is realized by doping natural additive for accelerating charge extraction and suppressing carrier nonradiative recombination in carbon-based CsPbI 2 perovskite solar cells.

Язык: Английский

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Comprehensive Passivation on Different Charged Ions and Defects for High Efficiency and Stable Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

Abstract Trap‐mediated nonradiative charge recombination poses a significant obstacle to achieving high‐efficiency and stability in metal‐halide perovskite solar cells (PSCs). Utilizing the interactions between functional groups of molecules defects as surface defect passivation strategies is common approach addressing this challenge. Nevertheless, challenge lies developing comprehensive molecule capable effectively depressing passivating different charged defects. This study explores multifunctional organic salt neostigmine methyl sulfate (NMS), finely regulate crystallization film, thereby minimizing The C═O S═O NMS coordinate with Pb 2+ , while oxygen atoms interact FA + through hydrogen bonds (O∙∙∙H─N). involving S─O − ions ─N(CH 3 ) negative halide are predominantly electrostatic interactions. Therefore, treatment, process film delayed, energy levels optimized, passivated. leads notable decrease density an improved alignment levels, enhancing carrier transfer extraction within device. Consequently, stabilized power conversion efficiency (PCE) 24.95% achieved. Even after 50 d, device maintains its environmental retaining 89.39%.

Язык: Английский

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Halogenated Hole Selective Contact Enhances Interfacial Weak Bonding of Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер 14(31)

Опубликована: Май 21, 2024

Abstract Weak bonding between the perovskite and charge transport layers can lead to interfacial defects, hindering transfer limiting efficiency stability of solar cells (PSCs). To address this issue, two halogenated spiro[fluorene‐9,9′‐xanthene]‐based molecules (SFX‐DM‐F SFX‐DM‐Cl) are designed as an layer hole materials (HTMs). Both first‐principles simulations experimental results used demonstrate that these improve contact perovskite's Pb(II) HTMs, increasing transfer. The similar structure interlayer HTM also enhances integral, favoring effective transport. PSCs based on SFX‐DM‐Cl achieve power conversion efficiencies 24.8% (0.0625 cm 2 ) 23.1% (1 ). Even after 2000 h at a relative humidity 15–20%, unencapsulated PSC retains 94% its initial efficiency. This work proposes homologous HTMs molecular bridges optimize weak chemical bonds transfer, thereby enabling efficient stable PSCs.

Язык: Английский

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