Effects of light irradiation on the photovoltaic performance and crystal lattices of organic–inorganic perovskites in solar cells

Next Energy, Год журнала: 2025, Номер 8, С. 100263 - 100263

Опубликована: Март 20, 2025

Язык: Английский

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2D Capping Layer Passivation toward Inorganic CsPbI₃ Perovskite Minimodule

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Abstract Surface termination is so far the mainstream passivating method to enhance performance of CsPbI 3 solar cells. However, surface can hardly achieve effective and homogeneous passivation on large‐area films, which one key challenge toward high‐performance inorganic perovskite modules (PSMs). The strong ionic bond between Cs Pb‐I framework in makes it difficult construct 2D layer film via post treatment, otherwise a classic effectual approach for defect elimination organic–inorganic hybrid perovskites. Herein, novel programmable reconstruction strategy reported that facilely tune using 2‐(1‐cyclohexenyl) ethyl ammonium iodide (CHEAI). In comparison termination, situ formation CHEA 2 PbI 4 by adjusting stoichiometry CHEAI demonstrates more comprehensive effects favorable energy level alignment films. Such construction has greatly facilitated enhancement device performance, especially when scaling up area. optimal PSM (active area 12.44 cm ) based achieves record‐high efficiency 19.32% (certified 18.83%) with much improved stability, endorsing practical promotion this intrinsically stable material.

Язык: Английский

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C ₆₀ -based ionic salt electron shuttle for high-performance inverted perovskite solar modules

Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 17, 2025

Although C 60 is usually the electron transport layer (ETL) in inverted perovskite solar cells, its molecular nature of leads to weak interfaces that lead non-ideal interfacial electronic and mechanical degradation. Here, we synthesized an ionic salt from , 4-(1',5′-dihydro-1'-methyl-2' H -[5,6] fullereno-C - I h -[1,9-c]pyrrol-2'-yl) phenylmethanaminium chloride (CPMAC), used it as shuttle PSCs. The CH 2 -NH 3 + head group CPMA cation improved ETL interface enhanced packing, leading ~3-fold increase toughness compared . Using CPMAC, obtained ~26% power conversion efficiencies (PCEs) with ~2% degradation after 2,100 hours 1-sun operation at 65°C. For minimodules (four subcells, 6 centimeters square), achieved PCE ~23% <9% 2,200 55°C.

Язык: Английский

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Crown Ethers with Different Cavity Diameters Inhibit Ion Migration and Passivate Defects toward Efficient and Stable Lead Halide Perovskite Solar Cells

ACS Nano, Год журнала: 2024, Номер 18(33), С. 22533 - 22547

Опубликована: Авг. 8, 2024

Organic–inorganic hybrid metal halide perovskite solar cells have been considered as one of the most promising next-generation photovoltaic technologies. Nevertheless, defects and Li+ ionic migration will seriously affect power conversion efficiency stability formal device. Herein, we designed two crown ether derivatives (PC12 PC15) with different cavity diameters, which selectively bind to cations. It is found that PC15 in precursor solution can actively regulate nucleation crystallization processes passivate uncoordinated Pb2+ ions, while PC12 at interface between layer hole-transporting effectively inhibit ions reduce nonradiative recombination losses. Therefore, act "lubricant" defect passivators, well inhibitors ion migration, when they are synergistically applied surface bulk layer. Consequently, optimized device achieved a champion 24.8% significantly improved humidity, thermal, light stability.

Язык: Английский

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Phosphonic acid based bifunctional additive for high-performance blue perovskite light-emitting diodes

Nano Energy, Год журнала: 2024, Номер 125, С. 109552 - 109552

Опубликована: Март 28, 2024

Язык: Английский

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