Space-Charge-Limited Current Measurements: A Problematic Technique for Metal Halide Perovskites

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: unknown, P. 10001 - 10008

Published: Sept. 24, 2024

Space-charge-limited current (SCLC) measurements play a crucial role in the electrical characterization of semiconductors, particularly for metal halide perovskites. Accurate reporting and analysis SCLC are essential gaining meaningful insights into charge transport defect density these systems. Unfortunately, performing on perovskites is complicated by their mixed electronic-ionic conductivity. This complexity led to data often being incorrectly analyzed using simplified models unsuitable materials reported without information about how were performed. In light recently published data, common challenges perovskite addressed, solutions discussed this paper. The applicability often-used analytical models, overlooked issues related ionic-electronic conductivity perovskites, creating single-carrier devices investigated drift-diffusion simulations. Finally, guidelines more accurate improved provided.

Language: Английский

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Solvent‐Tailored Carbon Paste for Effective Carbon‐Based Perovskite Solar Cells

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

Published: March 11, 2025

Printable planar carbon electrodes present a cost‐effective and highly promising alternative to thermally evaporated metals, serving as the rear contact for stable perovskite solar cells (PSCs). However, power conversion efficiencies (PCEs) of carbon‐based PSCs (C‐PSCs) are notably lower compared those state‐of‐the‐art PSCs. The inferior between electrode underlying layer contributes performance loss. Here, we developed scalable doctor‐bladed by simultaneously incorporating 4 wt% black utilizing toluene (TLE) solvent engineering commercial paste, resulting in improved flexibility conductivity while yielding reduction resistivity 50% measured via 4‐point probe. Consequently, sheet can efficiently adhere hole‐transporting simple pressing technique, significantly boosting charge transfer across interface. TLE device achieves champion PCE 15.77% with an ultralow hysteresis index (HI) 0.027, solvent‐free which has HI 0.176. exhibits long‐term stability when subjected dark conditions 40‐50% RH, sustaining 82% its initial efficiency after 24 days without encapsulation minimal declines J sc V oc .

Language: Английский

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Challenges and perspectives for the perovskite module research

Chem, Journal Year: 2025, Volume and Issue: unknown, P. 102542 - 102542

Published: April 1, 2025

Language: Английский

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Rational Interface Design Toward Mechanically Durable Flexible Perovskite Solar Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract Owing to distinctive properties of lightweight, thin, high energy‐to‐mass ratio and bendability, flexible perovskite solar cells (f‐PSCs) are expected extend the application scenarios photovoltaics, while defective fragile interface within devices seriously restricted their mechanical stability practical deployment. Herein, origin flexibility lattice is explored historic progress f‐PSCs briefly summarized. Then, fracture mechanics relevant characterizations introduced. Recent strategies boost durability systematically reviewed from aspect design, including regulation crystallization with optimum crystallinity suppressed strain, construction grain boundary patches eliminate difference between boundaries, facilitating energy dissipation adjacent elastic layers, strengthening interfacial contact improved resistance. In end, perspectives in further development toward efficient mechanically robust provided.

Language: Английский

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Simplifying contact-layer design for high-throughput printing of flexible perovskite photovoltaics

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 7147 - 7154

Published: Jan. 1, 2024

SAM enabled and simplified fully printed carbon-based flexible perovskite modules.

Language: Английский

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