The Journal of Physical Chemistry Letters, Год журнала: 2024, Номер 15(37), С. 9509 - 9517
Опубликована: Сен. 11, 2024
Solvent engineering is one of the most effective strategies to control perovskite film quality, which directly affects performance solar cells (PSCs). Here, we introduce volatile acetonitrile (ACN) into traditional solvent system (i.e.,
Язык: Английский
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 21, 2025
Abstract Metal halide perovskite solar cells (PSCs) have emerged as one of the most promising candidates for next‐generation photovoltaic technologies. However, films deposited by blade‐coating usually exhibit inferior film morphology compared to those fabricated spin‐coating, which hinders power conversion efficiency (PCE) and stability scalable modules (PSMs). Herein, ellipsoidal colloids are tailored in precursor solution incorporating polymer additives. Compared unregulated spherical colloids, demonstrate more oriented packing during process, is due anisotropic driven force from fluidic flow meniscus. As a result improved morphology, regulated PSCs PSMs achieve superior PCE 24.31% 21.67% (21.37% certified), respectively, aperture areas 0.09 13.94 cm 2 , 89% initial after 600 h continuous operation.
Язык: Английский
Процитировано
2
Communications Materials, Год журнала: 2024, Номер 5(1)
Опубликована: Сен. 18, 2024
Язык: Английский
Процитировано
15
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(32)
Опубликована: Май 24, 2024
Abstract Formamidinium‐lead triiodide (FAPbI 3 ) perovskite holds promise as a prime candidate in the realm of photovoltaics. However, photo‐active α‐FAPbI phase, existing metastable state, is observable solely at elevated temperatures and susceptible to degradation into δ‐phase ambient air. Therefore, attainment phase‐stable conditions has become crucial objective research. Here, we proposed an efficient conversion process PbI 2 perovskites This was facilitated by introduction chelating molecules, which interacted with form intermediate phase. Due reduced formation barrier resulting from altered reaction pathway, this stable phase transitioned directly upon deposition organic cation solution, effectively bypassing δ‐FAPbI . Consequently, ambient‐fabricated FAPbI solar cells (PSCs) exhibited outstanding power efficiency 25.08 %, along high open‐circuit voltage 1.19 V. Furthermore, unencapsulated devices demonstrated remarkable environmental stability. Notably, innovative approach promises broad applicability across various opening new avenues for further progress air fabrication PSCs.
Язык: Английский
Процитировано
10
Small, Год журнала: 2024, Номер 20(44)
Опубликована: Июль 10, 2024
Carbon-based perovskite solar cells (PSCs) coupled with solution-processed hole transport layers (HTLs) have shown potential owing to their combination of low cost and high performance. However, the commonly used poly(3-hexylthiophene) (P3HT) semicrystalline-polymer HTL dominantly shows edge-on molecular orientation, in which alkyl side chains directly contact layer, resulting an electronically poor at perovskite/P3HT interface. The study adopts a synergetic strategy comprising additive solvent engineering transfer orientation P3HT into 3D orientation. target possesses improved charge as well enhanced moisture-repelling capability. Moreover, energy level alignment between layer is realized. As result, champion devices small (0.04 cm
Язык: Английский
Процитировано
10
Nature Energy, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 15, 2024
Язык: Английский
Процитировано
10
Communications Materials, Год журнала: 2024, Номер 5(1)
Опубликована: Июль 23, 2024
Abstract In the last decade, laboratory-scale single-junction perovskite solar cells have achieved a remarkable power conversion efficiency exceeding 26.1%. However, transition to industrial-scale production has unveiled significant gap. The central challenge lies in difficulty of achieving uniform, high-quality films on large scale. To tackle this issue, various innovative strategies for manipulating crystallization emerged recent years. Based an in-depth fundamental understanding nucleation and growth mechanisms large-area prepared through blade/slot-die coating methods, review offers critical examination manipulation modules. Lastly, we explore future avenues aimed at enhancing stability PSMs, thereby steering field toward commercially viable applications.
Язык: Английский
Процитировано
9
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 10, 2025
Abstract The coffee‐ring effect, caused by uneven deposition of colloidal particles in perovskite precursor solutions, leads to poor uniformity films prepared through large‐area printing. In this work, the surface SnO 2 is roughened construct a Wenzel model, successfully achieving super‐hydrophilic interface. This modification significantly accelerates spreading solution, reducing response delay time during printing process. Additionally, micro‐spherical depression structure on effectively inhibits migration toward edges liquid film, trapping at buried interfaces and improving film uniformity. Due synergistic effect super‐hydrophilicity micro‐rough , leading substantial improvement quality crystals. Therefore, efficiency flexible devices (0.101 cm ) reached 25.42% (certified 25.12%). Moreover, rigid large‐scale solar modules (PSMs) based meniscus‐coating manufacture 21.34% 16.99% (100 ), respectively, demonstrated superior environmental stability maintaining an initial 91% after being stored atmospheric conditions for 2000 h, offering practical guidance fabricating high‐performance stable cells (PSCs).
Язык: Английский
Процитировано
1
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 10, 2025
Abstract Slot‐die coating has become essential for the large‐scale production of perovskite solar cells (pero‐SCs) and modules (pero‐SMs). However, power conversion efficiencies (PCEs) pero‐SCs pero‐SMs produced by slot‐die still significantly lag behind those spin‐coated devices owing to uncontrollable crystallization kinetics complex phase evolution perovskites during film formation. In this study, a precursor solution is engineered adding volatile 2‐methoxyethanol (2‐ME) combining it with DMF as main solvent. Its high vapor pressure Kamlet−Taft β value enabled rapid nucleation hydrogen bonding formamidinium iodide, promoting formation high‐density nuclei that template uniform growth directly trigger α ‐phase Consequently, high‐quality, large‐area (25 cm 2 ) film, uniform, pinhole‐free, phase‐pure characteristics, successfully deposited using method. Ultimately, (0.062 (15.64 fabricated achieved impressive PCEs 24.20% 21.84%, respectively. Notably, unencapsulated demonstrated superior operational stability, T 90 > 1150 h.
Язык: Английский
Процитировано
1
Small Methods, Год журнала: 2025, Номер unknown
Опубликована: Март 17, 2025
Abstract Blade‐coating has emerges as a critical route for scalable manufacturing of perovskite solar cells. However, the N 2 knife‐assisted blade‐coating process under ambient conditions typically yields inferior‐quality films due to inadequate nucleation control and disorderly rapid crystallization. To address this challenge, novel solvent engineering strategy is developed through substitution N‐methyl‐2‐pyrrolidone (NMP) with 1,3‐dimethyl‐1,3‐diazinan‐2‐one (DMPU). The unique physicochemical properties DMPU, characterized by low vapor pressure, strong coordination capability, limited PbI solubility, synergistically regulate crystallization kinetics. This enables nucleation, stabilization intermediate phases in wet films, controlled crystal growth, ultimately producing phase‐pure reduced defect density. Moreover, feasibility superiority mixed are demonstrated. optimized blade‐coated PSCs achieve power conversion efficiency 21.74% enhanced operational stability, retaining 84% initial continuous 1‐sun illumination 1,000 h. work provides new insights into design preparing films.
Язык: Английский
Процитировано
1
ACS Nano, Год журнала: 2024, Номер unknown
Опубликована: Июль 17, 2024
Defects around the surface and grain boundaries of perovskite films normally cause severe nonradiative recombination imbalanced charge carrier transport, further limiting both efficiency stability solar cells (PSCs). To tackle this critical issue, we propose a chemical bridge strategy to reconstruct interface using organometallic molecules. The commercially available molecule bis(diphenylphosphino)ferrocene (FcP2), with unique molecular structure, anchors chelates Pb atoms by forming strong Pb-P bonds passivates surfaces boundaries. Detailed characterization revealed that FcP2 reconstruction can effectively suppress recombination, electron delocalization properties ferrocene core achieve more balanced interfacial transport. resultant N-i-P PSC device outputs close 25% together one best reported operational stabilities, maintaining over 95% initial after 1000 h continuous operation at maximum power point under 1-sun illumination.
Язык: Английский
Процитировано
5