Polymer-acid-metal quasi-ohmic contact for stable perovskite solar cells beyond a 20,000-hour extrapolated lifetime

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Март 5, 2024

Abstract The development of a robust quasi-ohmic contact with minimal resistance, good stability and cost-effectiveness is crucial for perovskite solar cells. We introduce generic approach featuring Lewis-acid layer sandwiched between dopant-free semicrystalline polymer metal electrode in cells, resulting an ideal even at elevated temperature up to 85 °C. solubility Lewis acid alcohol facilitates nondestructive solution processing on top polymer, which boosts hole injection from into by two orders magnitude. By integrating the polymer-acid-metal structure devices exhibit remarkable resilience, retaining 96% ± 3%, 2% 75% 7% their initial efficiencies after continuous operation nitrogen 35 °C 2212 h, 55 1650 h 937 respectively. Leveraging Arrhenius relation, we project impressive T 80 lifetime 26,126 30

Язык: Английский

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Strain-less Perovskite Film Engineered by Interfacial Molecule for Stable Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2024, Номер 9(5), С. 2428 - 2435

Опубликована: Апрель 28, 2024

Although perovskite solar cells (PSCs) have demonstrated power conversion efficiency (PCE) as high 26%, instability caused by the heterointerfaces has been an issue. Since thermal expansion coefficient of is higher than that SnO2, in-plane tensile strain formed at perovskite/SnO2 interface one causes PSCs. We report here effective methodology to regulate via surface modification SnO2 layer with a bifunctional molecule phosphorylethanolamine (PEA) bearing phosphate and amine groups linked alkyl chain. The grazing incidence X-ray diffraction data showed observed upon deposition film on bare was substantially released modifying PEA. strain-less resulted in increase PCE from 22.87% 24.35%. Moreover, unencapsulated device stability better for PEA-modified unmodified one: 93% initial after 1700 h versus 66% PCE. Light-soaking superior SnO2.

Язык: Английский

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Defect Management and Ion Infiltration Barrier Enable High-Performance Perovskite Solar Cells

ACS Energy Letters, Год журнала: 2024, Номер 9(6), С. 2790 - 2799

Опубликована: Май 17, 2024

The stability of perovskite solar cells (PSCs) has been considered as one the major obstacles toward practical application. Defects in layer and ion infiltration from hole transport (HTL) can trigger degradation n-i-p PSCs. Herein, phenylhydrazine-4-sulfonic acid (PHPA) was employed an additive to modulate crystallization during film formation, enlarging crystal grain sizes ∼3 μm. Density functional theory (DFT) calculations revealed that PHPA could effectively inhibit formation iodine vacancies (VI) passivate under-coordinated Pb2+ ions. Additionally, perfluorooctanoic (PFOA) adopted surface located dangling defects, improve hydrophobicity, Li+ migration HTL bottom perovskite, thus enhancing device's environmental operational stability. Consequently, resulting devices delivered a champion efficiency 25.1% with excellent maximum-power-point (MPP) tracking

Язык: Английский

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Enhancing Efficiency of Industrially‐Compatible Monolithic Perovskite/Silicon Tandem Solar Cells with Dually‐Mixed Self‐Assembled Monolayers

Advanced Functional Materials, Год журнала: 2024, Номер 34(46)

Опубликована: Июнь 22, 2024

Abstract The antisolvent‐assisted spin‐coating still lags behind the thermal evaporation method in fabricating perovskite films atop industrially textured silicon wafers making monolithic perovskite/silicon solar cells (P/S‐TSCs). inhomogeneity of hole‐selective self‐assembled monolayers (SAMs) often arises from insufficient bonding between hygroscopic phosphonic acid anchors and metal oxide. To address this, a mixed‐SAM strategy (Mx‐SAM) is proposed to enhance adsorption energy SAMs on ITO surface, facilitate formation dense humidity‐resistant layer (HSL) substrates, improve hole transport capabilities. With aid Mx‐SAM strategy, optimized wide‐bandgap PSCs achieved an impressive power conversion efficiency (PCE) 22.63% with exceptionally high fill factor ( FF ) 86.67% using 1.68 eV perovskite. Moreover, they exhibited enhanced stability under damp‐heat conditions (ISOS‐D‐3, 85% RH, 85 °C) T 90 900 h for encapsulated PSCs, representing one best performances PSCs. When further extending P/S‐TSCs industry, remarkable 28.07% reached while upholding outstanding reproducibility. This holds significant promise feasibility industrially‐compatible P/S‐TSCs.

Язык: Английский

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Bifunctional ligand-induced preferred crystal orientation enables highly efficient perovskite solar cells

Joule, Год журнала: 2024, Номер 8(11), С. 3169 - 3185

Опубликована: Авг. 13, 2024

Язык: Английский

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