Molecular cation passivation and bromine vacancy supplement strategy for efficient wide-bandgap perovskite solar cells

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160339 - 160339

Published: Feb. 1, 2025

Language: Английский

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Challenges and Perspectives toward Wide-Bandgap Perovskite Subcell in Four-terminal All-Perovskite Tandem Solar Cells

DeCarbon, Journal Year: 2025, Volume and Issue: unknown, P. 100098 - 100098

Published: Jan. 1, 2025

Language: Английский

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Reinforcement of Carbazole-Based Self-Assembled Monolayers in Inverted Perovskite Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 8, 2025

Self-assembled monolayers (SAMs) with excellent hole conduction capabilities significantly improve the performance of inverted perovskite solar cells (PSCs). However, amphiphilic nature SAMs causes spontaneous formation spherical micelles in solution, limiting their surface coverage and uniformity on indium tin oxide (ITO) substrates. Furthermore, distribution directly affects morphology films charges transfer properties at buried interface. This study employs a cosolvent strategy combining n-butanol dimethyl sulfoxide to uniform spreading ITO. The synergistic interaction between solvent molecules smooths [2-(3,6-dimethoxy-9H-carbazol-9-yl) ethyl] phosphonic acid (MeO-2PACz) enhances its coverage. based MeO-2PACz has characteristics concentrated potential high work function, exhibiting enhanced P-type behavior. Additionally, cosolvent-treated provide nucleation sites for crystallization perovskite, effectively eliminating void defects interface improving crystallinity films. Consequently, optimized device achieves power conversion efficiency (PCE) 25.51% fill factor 84.38%. ordered stability PSCs, encapsulated retaining 92.63% initial PCE after operating 1500 h under simulated AM 1.5G standard irradiation air 65 °C.

Language: Английский

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Improving efficiency and stability of wide-bandgap perovskite solar cells and four-terminal tandems with iso-propylammonium 2D passivator

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159453 - 159453

Published: Jan. 1, 2025

Language: Английский

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Grains > 2 µm with Regulating Grain Boundaries for Efficient Wide‐Bandgap Perovskite and All‐Perovskite Tandem Solar Cells

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

Published: March 23, 2025

Abstract Tandem perovskite solar cells represent a significant avenue for the future development of photovoltaics. Despite their promise, wide‐bandgap perovskites, essential constructing efficient tandem structures, have encountered formidable challenges. Notably, high bromine content (>40%) in these 1.78 eV bandgap perovskites triggers rapid crystallization, complicating control grain boundary growth and leading to films with smaller sizes higher defect density than those narrower bandgaps. To address this, potassium tetrakis(pentafluorophenyl)borate molecules are incorporated into antisolvent, employing crystallographic orientation‐tailored strategy optimize growth, thereby achieving grains exceeding 2 µm effectively eliminating surplus lead halide defects at boundaries. As result, remarkable efficiency is achieved single‐junction devices, power conversion (PCE) 20.7%, all‐perovskite two‐terminal PCE 28.3% four‐terminal 29.1%, which all rank among highest reported values literature. Moreover, stability devices has been markedly improved. These findings offer novel perspective driving further advancements cell domain.

Language: Английский

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Molecular Cation Passivation and Bromine Vacancy Supplement Strategy for Efficient Wide-Bandgap Perovskite Solar Cells

Published: Jan. 1, 2024

Language: Английский

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