Enhancing Photovoltaically Preferred Orientation in Wide‐Bandgap Perovskite for Efficient All‐Perovskite Tandem Solar Cells

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

Wide-bandgap perovskite solar cells (WBG PSCs) have promising applications in tandem devices yet suffer from low open-circuit voltages (VOCs) and less stability. To address these issues, the study introduces multifunctional nicotinamide derivatives into WBG PSCs, leveraging regulation on photovoltaically preferential orientation optoelectronic properties via diverse functional groups, e.g., carbonyl, amino. Isonicotinamide (IA) molecule emerges as most effective agent, enhancing crystallization kinetics defect passivation due to its unique planar spatial configuration. Incorporating IA perovskites improves (100) preferred crystal orientation, reduces trap density, enables well-matched energy band alignment. High-performance 1.77 eV PSCs are achieved with a champion power conversion efficiency of 19.34% VOC 1.342 V, leading fabrication best-performing all-perovskite cell PCE 28.53% (certified 28.27%) excellent operational stability, maintaining over 90% initial under 1 sun illumination for 600 h.

Язык: Английский

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Record‐Efficiency Inverted CsPbI₃ Perovskite Solar Cells Enabled by Rearrangement and Hydrophilic Modification of SAMs

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 6, 2024

Abstract Recently, the inverted CsPbI 3 perovskite solar cells (PSCs) have attracted extensive attentions due to their potential combine with silicon for tandem devices theoretical power conversion efficiency (PCE) of 44%. However, reported self‐assembled molecules (SAMs) as hole selected layer PSCs poor wettability and serious agglomeration, which greatly limits stability PSCs. To address above problem, niobium pentachloride (NCL) is applied prevent SAMs agglomeration a homogenous film hydrophilic surface. The optimized surface facilitates deposition cesium lead triiodide (CsPbI )film an enhanced referred orientation, suppressed defects, released stress. Consequently, NCL‐treated achieved champion PCE 21.24%, highest value all‐inorganic device maintained 97.61% initial after 1000 h storage in air, 92.27% tracking at maximum point (MPP).

Язык: Английский

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Dual interfacial modification with 1D perovskite for self-assembled monolayer based inverted perovskite solar cells

Nano Energy, Год журнала: 2024, Номер 128, С. 109811 - 109811

Опубликована: Май 31, 2024

Язык: Английский

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The mechanism study on the enhancement of inverted perovskite solar cell performance by synergistic passivation strategy

Materials Today Communications, Год журнала: 2025, Номер unknown, С. 111505 - 111505

Опубликована: Янв. 1, 2025

Язык: Английский

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Interface Regulation via an Organometallic Ferrocene-Based Molecule toward Inverted Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2024, Номер 9(9), С. 4283 - 4292

Опубликована: Авг. 7, 2024

There is a significant challenge of charge recombination at the perovskite/electron transport layer (ETL), coupled with need optimized interface transfer in inverted perovskite solar cells (PSCs). In this work, an organometallic ferrocene-based molecule, ferrocenyl-bis-thieno[3,2-b]thiophene-2-carboxylate (FcTTPc), inherent carboxylate and thiophene functionalities surrounding central ferrocene motif, meticulously designed synthesized for modification perovskite/ETL interface. The groups FcTTPc molecule interact strongly components, effectively passivating defects. Furthermore, group can engage robust π–π interactions ETL, thereby enhancing transport. Following FcTTPc, improved alignment energy levels achieved, significantly optimizing carrier Due to via champion PSC achieves PCE 25.39%. FcTTPc-modified devices maintained over 96% their initial efficiency under 40% relative humidity conditions 1500 h.

Язык: Английский

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Reinforcing Coverage of Self‐assembled Monomolecular Layers for Inverted Perovskite Solar Cells with Efficiency of 25.70%

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Дек. 30, 2024

Abstract Self‐assembled monolayers (SAM) as hole transport layers have been widely used in high‐efficiency inverted perovskite solar cells (PSCs) exceeded 26 %. However, the poor coverage and non‐uniform distribution on substrate of SAM further restrict improvement device performance. Herein, we utilize mixed strategy via MeO‐2PACz along with perfluorotripropylamine (FC‐3283) to improve coverage, aiming accelerate carrier transport, promote growth, regulate surface energy levels suppress nonradiative recombination. The champion mixed‐SAM achieves an efficiency 25.70 % (certified 25.6 %) long‐term stability (maintained initial 90 after 1000 h 180 under ISOS‐L‐1 ISOS‐L‐2).

Язык: Английский

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Yttrium Metal–Organic Framework Nanocrystals for Two‐Step Deposited Perovskite Photovoltaics with Enhanced UV‐light Durability

Advanced Functional Materials, Год журнала: 2024, Номер 34(44)

Опубликована: Июнь 27, 2024

Abstract Metal–organic frameworks (MOFs), renowned for their porous and tunable functionalities, hold significant potential enhancing perovskite photovoltaic. However, the influence of MOF, particularly those with balanced cations in pores, on conversion bottom‐layer PbI 2 distribution MOFs within remains underexplored. Herein, a newly synthesized Yttrium (Y)‐MOF material is introduced, featuring dimethylamine (DMA) as its pores strong absorption UV regime, to modify films. Y‐MOF, rich oxygen nitrogen sites, DMA can passivate uncoordinated Pb 2+ perovskite. Scanning electron microscopy (SEM) grazing incidence wide‐angle X‐ray scattering (GIWAXS) analysis top bottom surfaces pristine Y‐MOF‐assisted samples reveal that presence films negligible. In situ UV–vis analyses demonstrate incorporation Y‐MOF decelerates crystallization kinetics perovskite, facilitating development larger grains. Moreover, GIWAXS experiments conducted at different angles predominant which effectively mitigates impact ultraviolet light Consequently, devices achieve an efficiency 24.05% improved stability especially UV‐light stability.

Язык: Английский

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Air‐Processed Efficient Perovskite Solar Cells With Full Lifecycle Management

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 25, 2024

Despite the outstanding power conversion efficiency of perovskite solar cells (PSCs) realized over years, entire lifecycle from preparation and operation to discarding PSCs still needs be carefully considered when it faces upcoming large-scale production deployment. In this study, bio-derived chitin-based polymers are employed realize full regulation air-processed by forming multiple coordinated hydrogen bonds stabilize lead iodide organic salt precursor inks, accelerating solid-liquid reaction crystallization two-step deposition process, then achieving high crystalline oriented perovskites with less notorious charge defects in open air. The air-prepared exhibit a decent 25.18% reproducibility improved operational stability toward harsh environment mechanical stress stimuli. modified display negligible fatigue behavior keeping 92% its initial after operating for 32 diurnal cycles (ISOS-LC-1 protocol). Meanwhile, closed-loop management end-of-life including suppression leakage, toxicity evaluation broken devices, recycling components comprehensively investigated. This work sheds light on promising avenue efficient stable PSCs.

Язык: Английский

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Phosphate-based ionic liquids for advanced interface modification in perovskite photovoltaics: Novel insights for ionic liquid molecule design

Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152559 - 152559

Опубликована: Май 25, 2024

Язык: Английский

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Judicious Fluorination of Perovskite Quantum Wells Enables Over 25% Efficiency in Inverted Solar Cells

Advanced Energy Materials, Год журнала: 2024, Номер 14(42)

Опубликована: Июль 28, 2024

Abstract The photovoltaic performance of inverted perovskite solar cells (PSCs) is often hindered by trap‐induced non‐radiative recombination and photochemical degradation occurring at the upper interfaces grain boundaries films. Herein, ortho‐, meta‐ , para ‐isomers fluorophenylethylammonium iodine (F‐PEAI) organic spacer molecules are evaluated for construction quantum wells (2D or quasi‐2D, PQWs) to encapsulate 3D perovskites. Among three variants, p ‐F‐PEAI leads most symmetric charge distribution weakest steric hindrance which resulting in reinforced interactions with PbI 2 perovskite, enhanced out‐of‐plane orientation confirmed Grazing incidence wide‐angle X‐ray scattering (GIWAXS) results. Density functional theory crystal orbital Hamilton population (COHP) calculations further confirm that p‐ F‐PEAI engages strongly structure. Moreover, transmission electron microscopy (TEM) characterization used illustrate ‐F‐PEAI‐assisted 2D PQWs effectively passivate both surfaces This configuration facilitates effective surface passivation, improves carrier transport, significantly suppresses recombination. resultant PSCs achieve an excellent power conversion efficiency (PCE) 25.03% a fill factor (FF) 85.11%. unencapsulated devices exhibit long‐term stability under ambient environments continuous light illumination.

Язык: Английский

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