Lead-free single crystal metal halide perovskite detectors

Materials Science and Engineering R Reports, Journal Year: 2025, Volume and Issue: 164, P. 100991 - 100991

Published: April 9, 2025

Language: Английский

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Enhanced Photodetection and Air Stability of Lead‐Free Tin Perovskite Photodiodes via Germanium Incorporation and Organic Cation‐Mediated Dimensionality Control

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: Aug. 16, 2024

Abstract This work presents the advancement of lead‐free tin perovskite photodiodes in terms their photodetection and air stability by incorporating germanium (Ge) ethylenediamine (EDA) to formamidinium iodide (FASnI 3 ). EDA 0.01 FA 0.98 SnI :Ge‐based demonstrate a significantly improved specific detectivity (1.6 × 10 12 Jones at −0.1 V), cut‐off frequency (6.6 5 Hz), response speed (0.53 µs), signal‐to‐noise ratio (45 dB) compared with control devices. The superior performance is attributed stronger Ge─I bond, passivation Sn 2+ I – vacancies smaller Ge ions, promotion fully 3D structure, elevation conduction band energy level, formation protective GeO layer. Various film analyses, including X‐ray photoelectron spectroscopy, UV density functional theory, as well device testing using time‐of‐flight secondary ion mass spectrometry voltage‐dependent admittance, support explain mechanisms behind enhancements. Ge‐ EDA‐incorporated exhibit excellent stability, evidenced time‐dependent ultraviolet visible spectra considerably high certified power conversion efficiency without encapsulation air, demonstrating potential for practical applications. obtained highest among published tin‐based photodetectors, presenting monumental progress from previous report same group.

Language: Английский

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Sustainable materials systems for triboelectric nanogenerator

SusMat, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract Benefiting from the high sensitivity and electromechanical conversion efficiency, triboelectric nanogenerators (TENGs) are widely used in various fields of self‐powered sensing mechanical energy harvesting, which have great potential for application future smart Internet Things. The development sustainable materials with high‐performance has a vital impact on construction TENG devices that combine high‐output performance environmental friendliness, positive humanity. This review systematically comprehensively summarizes latest research work TENG's materials. First, an overall overview is provided based composition materials, including amino acids, polysaccharides, synthetic polymer, representative works further classified summarized detail. In addition, progress harvesting applications also summarized. Finally, overviews challenges current material, related outlooks offered corresponding strategies directions this field future.

Language: Английский

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Enhanced performance of two-step deposited CsPbBr3 perovskite solar cells by SnO2 green solvent engineering

Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 138042 - 138042

Published: Jan. 1, 2025

Language: Английский

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Comparison of organic and inorganic hole transport layers in double perovskite material-based solar cell

Beilstein Journal of Nanotechnology, Journal Year: 2025, Volume and Issue: 16, P. 119 - 127

Published: Feb. 6, 2025

Perovskite solar cells (PSCs) are in the focus of photovoltaic industry. Lead-free double perovskite (DPSCs) have become an essential alternative lead-based PSCs as a promising material. The layer is remarkable choice active because intrinsic carrier stability, low exciton binding energy, and toxicity. Herein, optimization planar DPSC with multifunctional absorber layer, that is, La 2 NiMnO 6 (LNMO), studied organic inorganic hole transport layers (HTLs) Cu O PEDOT:PSS. Our study yields significant improvement power conversion efficiency (PCE) two types HTLs. optimized devices achieved maximum PCE 27.84% 27.38% for PEDOT:PSS, respectively, corresponding open-circuit voltages 1.27 1.22 V, short-circuit current densities 28.60 28.91 mA/cm , fill factors 76.31% 77.15%, respectively. These results highlight potential these HTLs enhanced device performance.

Language: Английский

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Design and simulation of gradient-structured Cs2AgBiBr6 carbon-based double perovskite solar cell for boosting photovoltaic performance

Solar Energy, Journal Year: 2025, Volume and Issue: 290, P. 113347 - 113347

Published: Feb. 16, 2025

Language: Английский

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Performance analysis of near-infrared-transparent perovskite solar cells employing heterojunction perovskite layers: Simulation Study

Journal of Physics and Chemistry of Solids, Journal Year: 2025, Volume and Issue: 201, P. 112662 - 112662

Published: March 3, 2025

Language: Английский

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Enhancing Efficiency and Stability of Perovskite Solar Cells through Synergistic Guanidine–Oxysalt‐Mediated Surface Engineering

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Three‐dimensional organic–inorganic perovskite solar cells show continuous improvement in power conversion efficiency. However, the defects present on surface affect device performance and long‐term stability. In this study, we introduced N‐(2‐phenoxyethyl) guanidine nitrate salt (NPEGN) as a passivator to effectively engineer reduce nonradiative recombination at interface. The NPEGN introduction results large grains with fewer grain boundaries, leading formation of low‐dimensional 2D phase surface. Furthermore, treatment passivates through ionic hydrogen bonding inhibits degradation by preventing ion migration. Additionally, improved energy‐level alignment perovskite/electron transport layer interface enhances charge capacity reduces recombination. Consequently, efficiency increases 21.02%, while unencapsulated devices retained 100% their initial for 2200 h nitrogen atmosphere 90% 450 65°C.

Language: Английский

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Strategies to promote the certified efficiency of inverted perovskite solar cells above 24%: A review

Published: April 1, 2025

Language: Английский

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Low‐Temperature Encapsulation with Silicone Grease Enhances Efficiency and Stability of Perovskite Solar Cells via Pb⁰ Defect Passivation

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

Published: April 22, 2025

Abstract Encapsulation is a critical strategy for mitigating the instability of perovskites, which remains primary challenge their commercialization. Traditional encapsulation adhesives, such as ethylene vinyl acetate and epoxy resin, are constrained by high‐temperature processes potential chemical reactions that can impair efficiency perovskite devices. The use vacuum silicone grease, primarily composed polydimethylsiloxane (PDMS), not only shields devices from moisture oxygen but also significantly enhances power conversion 23.91% to 25.34%. Further investigations reveal this improvement be attributed formation coordination bonds between atoms in PDMS lead within structure. This mechanism boosts inhibits Pb 0 defects, contributing loss instability. A ten‐fold increase stability observed at ≈90% humidity, underscoring its low‐temperature, non‐damaging, effective method enhancing performance solar cells.

Language: Английский

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