Impact of triiodide ion incorporation on the absorption and photovoltaic efficiency of Bismuth-Based hybrid compounds

Materials Science and Engineering B, Journal Year: 2025, Volume and Issue: 314, P. 118007 - 118007

Published: Jan. 16, 2025

Language: Английский

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Enhancing the Stability of Perovskite Solar Cells Through an Iodine Confinement Strategy in Covalent Organic Frameworks

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Abstract Perovskite solar cells (PSCs) have shown high power conversion efficiency in solar‐to‐electricity applications. However, the commercialization of this emerging technology is limited due to its low stability under realistic operating conditions. A major reason for degradation formation and escape iodine species upon exposure light, polarization thermal stress. Here, a new method proposed confine perovskite layer using multifunctional nitrogen‐rich covalent organic framework (TAPT‐BP‐COF). The ordered pore structure surface binding groups TAPT‐BP‐COF not only facilitate charge transfer complexes with molecules, but also enable multisite chelation undercoordinated lead ions, thereby improving quality film. This confinement strategy enables resulting Cs 0.05 MA FA 0.9 PbI 3 PSC devices (n‐i‐p) achieve an outstanding 25.58% (0.06 cm −2 ) one sun illumination. unencapsulated maintained over 96% their initial after continuous maximum point tracking 1200 h N 2 atmosphere. Importantly, PSCs demonstrated excellent even temperature ISOS‐L‐2 protocol, maintaining 90% peak at 85 °C 800 h.

Language: Английский

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Achieving Full Field‐of‐View Single‐Detector Imaging with Scattering Medium and Triple‐Cation Perovskite Photodetectors

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract A broad field‐of‐view (FOV) is essential for imaging, enabling the capture of larger scenes and finer details. Herein, Fourier single‐detector (FSI) imaging through an aperture obstacle explored FOV expansion with aid ground glass demonstrated. The dual light‐blocking effects necessitate a high‐performance, ultralow‐noise detector weak‐light imaging. Through precise interfacial engineering, triple‐cation perovskite photodetector developed, achieving ultralow noise current density (2.26 × 10 −13 Hz −1/2 ), high on/off ratio (1.58 7 fast response (1.83 µs), effective FSI in scattering medium. principle behind broadened elucidated geometric optics, “scattering lens” effect differential dependence on distance between further investigated. Notably, full reconstruction achieved when placed directly obstacle. This research offers new insights into lens FSI, overcoming bottleneck traditional techniques wide‐view obstacles. work promising approach to wide‐field complex environments, enhancing potential application under conditions.

Language: Английский

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Molecular Bridging of Buried Interface Flattens Grain Boundary Grooves and Imparts Stress Relaxation for Performance Enhancement and UV Stability in Perovskite Solar Cells

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 3, 2025

Abstract The limitations imposed by interfacial voids and residual stress fundamentally constrain the stability performance ceiling of perovskite solar cells (PSCs). Herein, study engineers a molecular bridge placement ectoine (Ec) at SnO 2 /perovskite interface. experimental investigations coupled with first‐principles density functional theory (DFT) calculations reveal that carboxyl group preferentially passivates uncoordinated Sn 4+ defects oxygen vacancies in , while imine establishes robust coordination Pb ⁺ ions to passivate 2+ defects. bi‐anchoring bridging mechanism facilitates release, flattens grain boundary grooves, significantly suppresses nonradiative recombination. In turn, Ec‐modified PSCs achieve power conversion efficiency (PCE) 24.68% (vs 22.56% for control). Significantly, unencapsulated Ec show improved UV stability, retaining 80.12% initial PCE after 130 h (equivalent 1412 irradiation) under 365 nm ultraviolet irradiation (50 mW cm −2 ). uncovers role as optimize buried interface effective yet stable cell fabrication.

Language: Английский

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Visible Light‐Triggered Self‐Welding Perovskite Solar Cells and Modules

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 20, 2024

Abstract Flexible perovskite solar cells (F‐PSCs) are highly promising for both stationary and mobile applications because of their advantageous features, including mechanical flexibility, lightweight thin nature, cost‐effectiveness. However, a number drawbacks, such as instability, make practical application difficult. Here, self‐welding dynamic diselenide that is triggered by visible light into the structure F‐PSCs to improve long‐term stability repairing cracks defects in absorber layer incorporated. The confers flexibility properties Cs 0.05 MA FA 0.9 PbI 3 layer, enabling optimized F‐PSC devices achieve power conversion efficiency 24.85% while retaining ca. 92% initial after undergoing 15 000 bending cycles at curvature radius mm. corresponding flexible large‐scale module with an active area 15.82 cm 2 achieved record PCE 21.65%.

Language: Английский

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Migration and evolution of iodine in perovskite solar cells

Materials Today Physics, Journal Year: 2024, Volume and Issue: unknown, P. 101616 - 101616

Published: Dec. 1, 2024

Language: Английский

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NiSe layer enhanced the efficiency of hole-conductor-free MAPbI3 perovskite solar cells

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 13(5), P. 2517 - 2523

Published: Nov. 29, 2024

The introduction of NiSe effectively reduces the defect density within device and lowers interfacial energy transfer barrier.

Language: Английский

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Aluminate Coupling Agent-Induced Interface Engineering for Enhanced Performance in NiOx-Based Inverted Perovskite Solar Cells

Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110634 - 110634

Published: Dec. 1, 2024

Language: Английский

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