Modulating buried interface with multi-fluorine containing organic molecule toward efficient NiO -based inverted perovskite solar cell

Nano Energy, Journal Year: 2023, Volume and Issue: 111, P. 108363 - 108363

Published: March 22, 2023

Language: Английский

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Molecular dipole engineering-assisted strain release for mechanically robust flexible perovskite solar cells

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 5423 - 5433

Published: Jan. 1, 2023

–CN additives are used to sew defects at perovskite grain boundaries and release GB stresses, resulting in low Young's modulus & high mechanical flexibility. Furthermore, 2F-2CN with a stronger molecular dipole enhances the efficiency stability of inverted f-PSCs, yielding exceptional efficiency.

Language: Английский

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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, Journal Year: 2024, Volume and Issue: 63(14)

Published: Feb. 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

Language: Английский

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Interface Dipole Management of D–A‐Type Molecules for Efficient Perovskite Solar Cells

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(30)

Published: May 7, 2024

Abstract Interfacial engineering of perovskite films has been the main strategies in improving efficiency and stability solar cells (PSCs). In this study, three new donor‐acceptor (D–A)‐type interfacial dipole (DAID) molecules with hole‐transporting different anchoring units are designed employed PSCs. The formation interface dipoles by DAID on film can efficiently modulate energy level alignment, improve charge extraction, reduce non‐radiative recombination. Among molecules, TPA‐BAM amide group exhibits best chemical optoelectrical properties, achieving a champion PCE 25.29 % enhanced open‐circuit voltage 1.174 V fill factor 84.34 %, due to reduced defect density improved hole extraction. Meanwhile, operational unencapsulated device significantly improved. Our study provides prospect for rationalized screening materials efficient stable

Language: Английский

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Regulating Crystal Orientation via Ligand Anchoring Enables Efficient Wide‐Bandgap Perovskite Solar Cells and Tandems

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)

Published: Nov. 13, 2023

Wide-bandgap (WBG) perovskite solar cells have attracted considerable interest for their potential applications in tandem cells. However, the predominant obstacles impeding widespread adoption are substantial open-circuit voltage (V

Language: Английский

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Monolithically-grained perovskite solar cell with Mortise-Tenon structure for charge extraction balance

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 3, 2023

Although the power conversion efficiency values of perovskite solar cells continue to be refreshed, it is still far from theoretical Shockley-Queisser limit. Two major issues need addressed, including disorder crystallization and unbalanced interface charge extraction, which limit further improvements in device efficiency. Herein, we develop a thermally polymerized additive as polymer template film, can form monolithic grain unique "Mortise-Tenon" structure after spin-coating hole-transport layer. Importantly, suppressed non-radiative recombination balanced extraction benefit high-quality crystals Mortise-Tenon structure, resulting enhanced open-circuit voltage fill-factor device. The PSCs achieve certified 24.55% maintain >95% initial over 1100 h accordance with ISOS-L-2 protocol, well excellent endurance according ISOS-D-3 accelerated aging test.

Language: Английский

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Stable NiOx-based inverted perovskite solar cells achieved by passivation of multifunctional star polymer

Nano Energy, Journal Year: 2023, Volume and Issue: 112, P. 108506 - 108506

Published: May 5, 2023

Language: Английский

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

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(10), P. 4251 - 4279

Published: Jan. 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.

Language: Английский

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Efficient Charge Transport in Inverted Perovskite Solar Cells via 2D/3D Ferroelectric Heterojunction

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: April 9, 2024

Abstract While the 2D/3D heterojunction is an effective method to improve power conversion efficiency (PCE) of perovskite solar cells (PSCs), carriers are often confined in quantum wells (QWs) due unique structure 2D perovskite, which makes charge transport along out‐of‐plane direction difficult. Here, a ferroelectric formed by 4,4‐difluoropiperidine hydrochloride (2FPD) inverted PSCs reported. The enriched 2 PbI 4 layer with n = 1 on surface exhibits response and has oriented dipoles direction. ferroelectricity dipole facilitates enhancement built‐in electric field (1.06 V) delay cooling process hot carriers, reflected high carrier temperature (above 1400 K) prolonged photobleach recovery time (139.85 fs, measured at bandgap), improving conductivity. In addition, alignment energy levels optimized exciton binding (32.8 meV) reduced changing dielectric environment surface. Finally, 2FPD‐treated achieve PCE 24.82% (certified: 24.38%) synergistic effect defect passivation, while maintaining over 90% their initial after 1000 h maximum point tracking.

Language: Английский

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Electric-field activating on-surface tailored (OST) coarse polyester fibers for efficient airborne particle removal: Interfacial morphologies and electrical response

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128291 - 128291

Published: June 15, 2024

Language: Английский

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