Bulk Passivation of Perovskite Films With Phthalocyanine Derivative for Enhanced Perovskite Solar Cells Efficiency and Stability

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

Published: March 10, 2025

Abstract Perovskite solar cells (PSCs) have emerged as a promising candidate for low‐cost and high‐efficiency photovoltaic solutions, poised to rival conventional technologies. Despite their potential, the path commercialization is impeded by significant defect state density present within films. In this work, phthalocyanine derivative, tetra‐2‐(benzyloxy)ethoxy substituted Zn(II) (BE‐ZnPc), characterized multiple binding sites, introduced into perovskite precursor solution. This innovative approach designed modulate crystallization process of passivate defects through strategic doping mechanism. The BE‐ZnPc molecule, with its planar macrocyclic structure electron‐donating attributes, engages effectively undercoordinated Pb 2+ ions, thereby diminishing enhancing overall film quality. resultant PSCs, optimized BE‐ZnPc, achieved power conversion efficiencies (PCE) high 26% (with certified PCE 26.05%), marking milestone in PSC performance. Moreover, these devices maintain an impressive 92% initial following 550 h operation at maximum point. study delineates novel strategy bolstering both efficiency durability PSCs utilization functional phthalocyanines, charting new course advancement technology.

Language: Английский

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Achieving 32% Efficiency in Perovskite/Silicon Tandem Solar Cells with Bidentate‐Anchored Superwetting Self‐Assembled Molecular Layers

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

The inhomogeneity of hole-selective self-assembled molecular layers (SAMLs) often arises from the insufficient bonding between anchors and metal oxide, particularly on textured silicon surfaces when fabricating monolithic perovskite/silicon tandem solar cells (P/S-TSCs) hydrophobic carbazole complicates fabrication high-quality perovskite films. To address this, we developed a novel bidentate-anchored superwetting aromatic SAM based an upside-down core as layer (HSL), denoted ((9H-carbazole-3,6-diyl)bis(4,1-phenylene))bis(phosphonic acid) (2PhPA-CzH). bisphosphonate-anchored exhibited enhanced adsorption capabilities efficient hole extraction/transport, reversely substituted ring contributed friendly super wetting underlayer that enabled films with minimized energetic mismatches, which 2PhPA-CzH played pivotal role in dual interfacial energy regulation. Through these advancements, optimized wide-bandgap (1.68 eV) PSCs demonstrated improved PCE 22.83% excellent stability T90 exceeding 1000 h under damp-heat conditions (ISOS-D-3, 85% RH, 85 °C), representing one best performances for SAMs HSL-based PSCs. Notably, 2PhPA-CzH-functionalized recombination extended to submicron-pyramid texture SHJ fabricate P/S-TSCs, achieving impressive efficiency 32.19% at active area 1 cm2 (certified 31.54%) while maintaining photostability. This work offers guidance designing multidentate-anchored realize record P/S-TSCs.

Language: Английский

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Achieving 32% Efficiency in Perovskite/Silicon Tandem Solar Cells with Bidentate‐Anchored Superwetting Self‐Assembled Molecular Layers

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Abstract The inhomogeneity of hole‐selective self‐assembled molecular layers (SAMLs) often arises from the insufficient bonding between anchors and metal oxide, particularly on textured silicon surfaces when fabricating monolithic perovskite/silicon tandem solar cells (P/S‐TSCs) hydrophobic carbazole complicates fabrication high‐quality perovskite films. To address this, we developed a novel bidentate‐anchored superwetting aromatic SAM based an upside‐down core as layer (HSL), denoted ((9H‐carbazole‐3,6‐diyl)bis(4,1‐phenylene))bis(phosphonic acid) (2PhPA‐CzH). bisphosphonate‐anchored exhibited enhanced adsorption capabilities efficient hole extraction/transport, reversely substituted ring contributed friendly super wetting underlayer that enabled films with minimized energetic mismatches, which 2PhPA‐CzH played pivotal role in dual interfacial energy regulation. Through these advancements, optimized wide‐bandgap (1.68 eV) PSCs demonstrated improved PCE 22.83% excellent stability T 90 exceeding 1000 h under damp‐heat conditions (ISOS‐D‐3, 85% RH, 85 °C), representing one best performances for SAMs HSL‐based PSCs. Notably, 2PhPA‐CzH‐functionalized recombination extended to submicron‐pyramid texture SHJ fabricate P/S‐TSCs, achieving impressive efficiency 32.19% at active area 1 cm 2 (certified 31.54%) while maintaining photostability. This work offers guidance designing multidentate‐anchored realize record P/S‐TSCs.

Language: Английский

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Improving the Stability of Wide Bandgap Perovskites: Mechanisms, Strategies, and Applications in Tandem Solar Cells

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

Published: April 7, 2025

Abstract Tandem solar cells (TSCs) based on wide bandgap (WBG) perovskites have gained significant attention for their higher power conversion efficiency (PCE) compared to single‐junction cells. The role of WBG perovskite (PSCs) as the sub‐cell in tandem consists absorbing high‐energy photons and producing open‐circuit voltages ( V OC ). However, PSCs face serious phase separation issues, resulting poor long‐term stability substantial loss TSCs. In response, researchers developed a range strategies mitigate these challenges, showing promising progress, comprehensive review is expected. this review, we discuss mechanism organic–inorganic hybrids all‐inorganic perovskites. Additionally, conduct an in‐depth investigation various enhance stability, including component engineering, additive interface dimension control, solvent encapsulation. Furthermore, application TSCs summarized detail. Finally, perspectives are provided offer guidance development efficient stable field

Language: Английский

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Heterogeneous Amine with Polycyclic‐Aromatics‐Modified Hole Transport Material for Efficient and Operationally Durable Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

Abstract Achieving efficient perovskite solar cells (PSCs) with high operational durability is a challenging task. Here, by exploiting the heterogeneous amine strategy at molecular level, novel spirobifluorene derivative bearing methoxynaphthalene and 9,9‐dimethylfluorene peripheral groups ( N 2 , 2′ 7 7′ ‐tetrakis(9,9‐dimethyl‐9 H ‐fluoren‐2‐yl)‐ ‐tetrakis(6‐methoxynaphthalen‐2‐yl)‐9,9′‐spirobi[fluorene]‐2,2′,7,7′‐tetraamine, denoted as Spiro‐NADF) hole transport material (HTM) developed to address efficiency issues of PSCs. Compared 2,2′,7,7′‐tetrakis( ‐di‐ p ‐methoxyphenyl)‐amine‐9,9′‐spirobifluorene, Spiro‐NADF exhibits not only favorable energy level alignment but also higher glass transition temperature strong adhesion perovskite. Moreover, Spiro‐NADF‐based layer shows excellent morphological stability in devices against damp heat stress. These advantages reduce voltage loss suppress decomposition ion migration. Consequently, PSCs based on exhibit champion 24.66% an open‐circuit 1.19 V. The corresponding show greatly enhanced harsh environments, retaining over 92% initial efficiencies for 500 h aging under test (85 °C 70–90% relative humidity) illumination maximum power point tracking, respectively. This work demonstrates that engineering HTMs using amines polycyclic aromatics leaves considerable room developing stable

Language: Английский

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