Chemical Engineering Journal, Год журнала: 2024, Номер 501, С. 157647 - 157647
Опубликована: Ноя. 13, 2024
Язык: Английский
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 7, 2025
Abstract Direct understanding of the formation and crystallization low‐dimensional (LD) perovskites with varying dimensionalities employing same bulky cations can offer insights into LD their heterostructures 3D perovskites. In this study, secondary amine cation N ‐methyl‐1‐(naphthalen‐1‐yl)methylammonium (M‐NMA + ) dynamics its corresponding perovskite are investigated. The intermolecular π–π stacking M‐NMA connection inorganic PbI 6 octahedrons within product structures control perovskite. an N,N‐ dimethylformamide (DMF) precursor solution, both 1D 2D products be obtained. Interestingly, due to strong interaction between DMF solvent, compared phase, is uniquely dependent on heterogeneous nucleation. Nevertheless, post‐treatment films isopropanol solution M‐NMAI leads exclusive thermally stable phases surface. resulting 1D/3D heterostructure facilitates solar cells (PSCs) not only achieve a record efficiency 25.51% through passivation but also significantly enhance thermal stability unencapsulated devices at 85 °C. This study deepens offers efficient strategy for fabricating high‐performance PSCs.
Язык: Английский
Процитировано
4
ACS Energy Letters, Год журнала: 2024, Номер 9(9), С. 4283 - 4292
Опубликована: Авг. 7, 2024
There is a significant challenge of charge recombination at the perovskite/electron transport layer (ETL), coupled with need optimized interface transfer in inverted perovskite solar cells (PSCs). In this work, an organometallic ferrocene-based molecule, ferrocenyl-bis-thieno[3,2-b]thiophene-2-carboxylate (FcTTPc), inherent carboxylate and thiophene functionalities surrounding central ferrocene motif, meticulously designed synthesized for modification perovskite/ETL interface. The groups FcTTPc molecule interact strongly components, effectively passivating defects. Furthermore, group can engage robust π–π interactions ETL, thereby enhancing transport. Following FcTTPc, improved alignment energy levels achieved, significantly optimizing carrier Due to via champion PSC achieves PCE 25.39%. FcTTPc-modified devices maintained over 96% their initial efficiency under 40% relative humidity conditions 1500 h.
Язык: Английский
Процитировано
8
Advanced Functional Materials, Год журнала: 2024, Номер 34(44)
Опубликована: Июнь 27, 2024
Abstract Metal–organic frameworks (MOFs), renowned for their porous and tunable functionalities, hold significant potential enhancing perovskite photovoltaic. However, the influence of MOF, particularly those with balanced cations in pores, on conversion bottom‐layer PbI 2 distribution MOFs within remains underexplored. Herein, a newly synthesized Yttrium (Y)‐MOF material is introduced, featuring dimethylamine (DMA) as its pores strong absorption UV regime, to modify films. Y‐MOF, rich oxygen nitrogen sites, DMA can passivate uncoordinated Pb 2+ perovskite. Scanning electron microscopy (SEM) grazing incidence wide‐angle X‐ray scattering (GIWAXS) analysis top bottom surfaces pristine Y‐MOF‐assisted samples reveal that presence films negligible. In situ UV–vis analyses demonstrate incorporation Y‐MOF decelerates crystallization kinetics perovskite, facilitating development larger grains. Moreover, GIWAXS experiments conducted at different angles predominant which effectively mitigates impact ultraviolet light Consequently, devices achieve an efficiency 24.05% improved stability especially UV‐light stability.
Язык: Английский
Процитировано
6
Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152559 - 152559
Опубликована: Май 25, 2024
Язык: Английский
Процитировано
5
Advanced Energy Materials, Год журнала: 2024, Номер 14(42)
Опубликована: Июль 28, 2024
Abstract The photovoltaic performance of inverted perovskite solar cells (PSCs) is often hindered by trap‐induced non‐radiative recombination and photochemical degradation occurring at the upper interfaces grain boundaries films. Herein, ortho‐, meta‐ , para ‐isomers fluorophenylethylammonium iodine (F‐PEAI) organic spacer molecules are evaluated for construction quantum wells (2D or quasi‐2D, PQWs) to encapsulate 3D perovskites. Among three variants, p ‐F‐PEAI leads most symmetric charge distribution weakest steric hindrance which resulting in reinforced interactions with PbI 2 perovskite, enhanced out‐of‐plane orientation confirmed Grazing incidence wide‐angle X‐ray scattering (GIWAXS) results. Density functional theory crystal orbital Hamilton population (COHP) calculations further confirm that p‐ F‐PEAI engages strongly structure. Moreover, transmission electron microscopy (TEM) characterization used illustrate ‐F‐PEAI‐assisted 2D PQWs effectively passivate both surfaces This configuration facilitates effective surface passivation, improves carrier transport, significantly suppresses recombination. resultant PSCs achieve an excellent power conversion efficiency (PCE) 25.03% a fill factor (FF) 85.11%. unencapsulated devices exhibit long‐term stability under ambient environments continuous light illumination.
Язык: Английский
Процитировано
5
Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152539 - 152539
Опубликована: Май 24, 2024
Язык: Английский
Процитировано
4
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(24), С. 31209 - 31217
Опубликована: Июнь 4, 2024
Constructing a 1D/3D perovskite heterojunction has recently emerged as prevalent approach for elevating the efficiency and stability of solar cells (PSCs), due to excellent defect-passivation capacity enhanced resistance water oxygen 1D perovskite. However, commonly exhibits much poorer charge carrier transport ability when compared with its 3D counterpart. Tailoring intrusion depth into is thus key importance PSCs but remains great challenge. We introduce herein novel anion-regulation strategy that can effectively tune behavior form gradual structure gradient energy-level alignment. This 1D/3D-perovskite interface leads outstanding defect passivation performance, together desired balance between moisture/oxygen blocking. Consequently, resulting from tetra-n-butylammonium acetate (TBAAc) treatment yield remarkable enhancement in power conversion (PCE) 18.4 20.1%. The unencapsulated device also demonstrates retains 90% initial PCE after 2400 h storage air atmosphere 30 ± 5% humidity at 25 5 °C.
Язык: Английский
Процитировано
3
Small, Год журнала: 2024, Номер unknown
Опубликована: Окт. 14, 2024
Abstract During fabrication and operation of perovskite solar cells (PSCs), defects commonly arise within the crystals as well at grain boundaries. However, conventional additive strategies typically only serve to mitigate occurrence a single defect fail significantly enhance device performance. Herein, carbon‐based hole‐transport‐layer‐free CsPbI 2 Br devices are focused on, one kind important PSCs with more stable structure an appropriate bandgap for semitransparent cell or top in tandem configuration, present highly efficient one‐stone‐for‐multiple‐birds strategy based on lanthanide trifluoromethanesulfonates (Ln(OTF) 3 , Ln: neodymium (Nd), europium (Eu), dysprosium (Dy), thulium (Tm)). Density functional theory calculations reveal that Ln 3+ ions smaller radius can elevate formation energy Pb I vacancies crystals, while presence OTF − effectively passivating uncoordinated 2+ In addition, Ln(OTF) addition increases size meanwhile reduces surface roughness layers. All these positive contributions lead significant enhancement power conversion efficiency (PCE) 15.13% which is among PCEs reported corresponding cells, from 11.80% pristine without Tm(OTF) notably boosting long‐term stability reducing current–voltage hysteresis.
Язык: Английский
Процитировано
3
Nano Energy, Год журнала: 2025, Номер unknown, С. 110652 - 110652
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Nano Energy, Год журнала: 2025, Номер unknown, С. 110716 - 110716
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0