Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Carboxymethyldextran sodium (CMD) was used to modify tin dioxide prepare highly efficient and stable SnO 2 -based perovskite solar cells, in which the filling factor as high 84.89%.
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 18, 2024
Abstract Tin oxide (SnO 2 ) with high conductivity and excellent photostability has been considered as one of the most promising materials for efficient electron transport layer (ETL) in perovskite solar cells (PSCs). Among them, SnO nanoparticles (NPs) dispersions have extensively utilized due to their facile film formation. However, inherent defects agglomeration issues NPs, well limited tunability instability post‐treatment process surface/interface engineering strategy, still hinder its further applications. Herein, a ligand‐management strategy implemented during situ synthesis NPs that can effectively achieve uniform modification is proposed. During grafting reaction between diethyl 2‐chloromalonate (DCMA) surface completed. Compared process, this intrinsic DCMA‐passivated (DCMA‐SnO reduces trap state density at interface ETL while enhancing chemical stability. Consequently, PSCs based on DCMA‐SnO champion PCE 25.39% small (active area 0.0655 cm 20.61% modules 23.25 ), demonstrating shelf‐life/light soaking stability (advanced level ISOS protocols). This exhibits significant application potential preparing high‐efficiency large‐area PSCs.
Language: Английский
Citations
6
Nanoscale, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
The perovskite/electron transport layer interface plays a critical role in perovskite solar cell (PSC) performance and stability. Here, we report potassium bisaccharate (PB) acting as multifunctional interfacial chemical bridge at the between electron on introducing it into buried interface. carboxyl group one end of molecule is anchored to hydroxy-rich SnO2 surface through covalent interactions, stabilizing its out-of-plane orientation, other reduces non-radiative recombination by passivating under-coordinated Pb2+ perovskite. Sum-frequency generation (SFG) spectra confirm orientations optimize energy level alignment. Carbon-based PSCs treated with PB achieve champion PCE 19.69% (active area: 0.04 cm2) retain 95.8% their initial efficiency after 1200 h under ambient conditions. These results demonstrate promising modifier enhance long-term stability carbon-based PSCs.
Language: Английский
Citations
0
Small, Journal Year: 2025, Volume and Issue: unknown
Published: March 10, 2025
Abstract The chemical regulation of SnO 2 to enhance the properties buried interface in perovskite films is extensively investigated, but underpinning mechanisms remain insufficiently understood. In this study, a synergistic strategy for cation fixation and anion diffusion by incorporating (3‐amino‐3‐carboxypropyl) dimethylsulfonium chloride (Vitamin U, V U ) into colloidal solution proposed. cationic end (─COOH, ─NH effectively inhibits aggregation particles promotes electron extraction transport via interactions. Simultaneously, anionic (Cl⁻) acts eliminate surface hydroxyl groups on occupy oxygen vacancies. Crucially, novel direct current polarization test employed elucidate migration mechanism Cl⁻, revealing that principle ions , can penetrate bottom layer, forming wide bandgap thin layer aids energy level alignment regulates charge transfer behavior. Ultimately, device based ‐modified achieves champion efficiency 25.27%. Moreover, it demonstrates impressive storage stability with T90 5770 h retains 86% its initial after 1110 continuous light exposure.
Language: Английский
Citations
0
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
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 12, 2025
Abstract The operational stability issues of perovskite devices under illumination pose significant challenges for practical applications, attributed to substantial alterations in lattice distortion, defect enrichment, and stress distribution the excited state. However, most existing modification strategies predominantly focus on elimination chemical transformations at ground state level, which may not yield desired outcomes To address this challenge, study introduces a dynamic management strategy utilizing 4‐aminoazobenzene hydrochloride, exhibits photoinduced cis‐trans isomerism, buried interface within devices. Experimental results demonstrate that isomerized molecules anchored effectively inhibit formation defects mitigate interfacial accumulation. A comprehensive mechanism through isomerism transformation has been proposed elucidate process. Consequently, device efficiency have markedly enhanced, achieving peak 25.65% retaining over 92% its initial after 1200 h continuous International Summit Organic Photovoltaic Stability protocol (ISOS ).
Language: Английский
Citations
0
Cell Reports Physical Science, Journal Year: 2025, Volume and Issue: unknown, P. 102506 - 102506
Published: March 1, 2025
Language: Английский
Citations
0
Applied Physics A, Journal Year: 2025, Volume and Issue: 131(4)
Published: April 1, 2025
Language: Английский
Citations
0
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: May 3, 2025
Abstract The limitations imposed by interfacial voids and residual stress fundamentally constrain the stability performance ceiling of perovskite solar cells (PSCs). Herein, study engineers a molecular bridge placement ectoine (Ec) at SnO 2 /perovskite interface. experimental investigations coupled with first‐principles density functional theory (DFT) calculations reveal that carboxyl group preferentially passivates uncoordinated Sn 4+ defects oxygen vacancies in , while imine establishes robust coordination Pb ⁺ ions to passivate 2+ defects. bi‐anchoring bridging mechanism facilitates release, flattens grain boundary grooves, significantly suppresses nonradiative recombination. In turn, Ec‐modified PSCs achieve power conversion efficiency (PCE) 24.68% (vs 22.56% for control). Significantly, unencapsulated Ec show improved UV stability, retaining 80.12% initial PCE after 130 h (equivalent 1412 irradiation) under 365 nm ultraviolet irradiation (50 mW cm −2 ). uncovers role as optimize buried interface effective yet stable cell fabrication.
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157154 - 157154
Published: Oct. 1, 2024
Language: Английский
Citations
3
Nano Energy, Journal Year: 2024, Volume and Issue: unknown, P. 110406 - 110406
Published: Oct. 1, 2024
Language: Английский
Citations
2