Multifunctional Trifluoroborate Additive for Simultaneous Carrier Dynamics Governance and Defects Passivation to Boost Efficiency and Stability of Inverted Perovskite Solar Cells

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(14)

Опубликована: Фев. 10, 2024

Abstract The main obstacles to promoting the commercialization of perovskite solar cells (PSCs) include their record power conversion efficiency (PCE), which still remains below Shockley–Queisser limit, and poor long‐term stability, attributable crystallographic defects in films open‐circuit voltage ( V oc ) loss devices. In this study, potassium (4‐tert‐butoxycarbonylpiperazin‐1‐yl) methyl trifluoroborate (PTFBK) was employed as a multifunctional additive target modulate bulk carrier dynamics PSCs. Apart from simultaneously passivating anionic cationic defects, PTFBK could also optimize energy‐level alignment devices weaken interaction between carriers longitudinal optical phonons, resulting lifetime greater than 3 μs. Furthermore, it inhibited non‐radiative recombination improved crystallization capacity film. Hence, rigid flexible p‐i‐n PSCs yielded champion PCEs 24.99 % 23.48 %, respectively. More importantly, due hydrogen bonding formamidinium fluorine, exhibited remarkable thermal, humidity, operational tracking at maximum point stabilities. reduced Young's modulus residual stress layer provided excellent bending stability for

Язык: Английский

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Improved Air Stability for High-Performance FACsPbI₃ Perovskite Solar Cells via Bonding Engineering

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(2), С. 2408 - 2416

Опубликована: Янв. 3, 2024

Despite the fact that perovskite solar cells (PSCs) are widely popular due to their superb power conversion efficiency (PCE), further applications still restricted by low stability and high-density defects. Especially, weak binding ion–electron properties of crystals make them susceptible moisture attack under environmental stress. Herein, we report an overall sulfidation strategy via introduction 1-pentanethiol (PT) into film inhibit bulk defects stabilize Pb ions. It has been confirmed thiol groups in PT can uncoordinated ions passivate iodine vacancy forming strong Pb–S bonds, thus reducing nonradiative recombination. Moreover, favorable passivation process also optimizes energy-level arrangement, induces better crystallization, enhances charge extraction full cells. Consequently, PT-modified inverted device delivers a champion PCE 22.46%, which is superior control (20.21%). More importantly, retains 91.5% its initial after storage air for 1600 h over 85% heating at 85 °C 800 h. This work provides new perspective simultaneously improve performance PSCs satisfy commercial applications.

Язык: Английский

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Cross-linking polymerization boosts the performance of perovskite solar cells: from material design to performance regulation

Energy & Environmental Science, Год журнала: 2023, Номер 16(10), С. 4251 - 4279

Опубликована: Янв. 1, 2023

This paper reviews the performance modulation of perovskite solar cells by cross-linking polymerization with different molecular structures from points grain boundaries, lattice interior, and charge transport layers.

Язык: Английский

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Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

Advanced Energy Materials, Год журнала: 2023, Номер 14(4)

Опубликована: Ноя. 30, 2023

Abstract Wide‐bandgap (WBG) perovskite solar cells (PSCs) have drawn great attention owing to their promising potential for constructing efficient tandem cells. However, the rapid crystallization results in poor film properties and easy formation of defects, thereby greatly restricting acquisition a small open‐circuit voltage ( V OC ) deficit due severe nonradiative recombination. Herein, it introduced triethanolamine borate (TB) effectively slow down preparing highly crystalline uniform WBG films with reduced defects. The strong intermolecular interaction (e.g., coordination hydrogen bond) between TB can suppress halide vacancy inhibit phase segregation improving long‐term stability. devices based on 1.65 eV absorber achieved high efficiency 21.55% 1.24 V, demonstrating is as low 0.41 which one lowest reports. By combining semitransparent subcell narrow‐bandgap tin‐based PSC, four‐terminal cell delivers 26.48%.

Язык: Английский

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Unifying Crystal Growth and Defect Passivation in Photovoltaic Perovskites: The Impact of Molecular Coordinating Strength

ACS Energy Letters, Год журнала: 2024, Номер 9(3), С. 1115 - 1124

Опубликована: Фев. 22, 2024

Perovskite solar cells (PSCs) are attractive due to their fast-increasing device efficiency, yet further improvement is limited by suboptimal morphology and intrinsic defects. To assess how the widely used additive engineering impacts crystal growth defect passivation, we herein propose a simple but effective strategy disentangle influence of molecular coordinating strength on above factors, respectively. By fine-tuning single halide atom molecule, can transform functional role from only normal passivator into plus crystal-growth modifier, rendered tailored competition between precursor–solvent precursor–additive interactions. Thus, optimized PSCs leveraged deliver PCE over 24% with improved stability. The unified passivation under impact here provides new insights designing molecules interest push envelope PSCs' efficiency.

Язык: Английский

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Multifunctional one-dimensional seeding layers enable stable and over 20%-efficiency inverted perovskite photovoltaic modules

Nano Energy, Год журнала: 2024, Номер 122, С. 109329 - 109329

Опубликована: Фев. 2, 2024

Язык: Английский

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A dual passivation strategy based on F/N co-doped coal-based graphene quantum dots for high-efficiency carbon-based perovskite solar cells

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(10), С. 5980 - 5989

Опубликована: Янв. 1, 2024

F/N-GQDs were used to synergistically passivate defects of perovskite layers, suppressing nonradiative recombination, optimizing energy level alignment, and improving hole extraction ability, greatly enhancing the photoelectric performance C-PSCs.

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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Film-forming polymer nanoparticle strategy for improving the passivation and stability of perovskite solar cells

Energy & Environmental Science, Год журнала: 2024, Номер 17(19), С. 7221 - 7233

Опубликована: Янв. 1, 2024

Highly deformable crosslinked polymer particles enhance perovskite solar cell passivation and stability by binding distributing throughout the film.

Язык: Английский

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Covalent triazine reducing the defects by coordination roles and inhibiting I− migration by anion-π interaction for efficient perovskite solar cell

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148643 - 148643

Опубликована: Янв. 14, 2024

Язык: Английский

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