A Versatile Bridging Molecule Managed the Buried SnO₂/Perovskite Interface for Efficient and Stable Perovskite Solar Cells

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Buried interface in perovskite solar cells (PSCs) is a critical determination for the performance and stability because it dominates crystallization of layer, non-radiative recombination, ion migration at interfaces. Herein, novel versatile modifier, potassium sucrose octasulfate (K8SOS) which rich sulfonic groups ions, introduced bridging buried SnO2 interface, to improve interfacial states further device performance. It found that K8SOS serves as bridge can not only passivate defects through multi-site strengthening chemical binding, thus effectively inhibiting non-radiation recombination suppressing migration, but also optimize surface state absorber, ultimately achieving gratifying efficiency 25.32% with negligible hysteresis. What's more, optimized delivers admirable sustaining over 90% initial power conversion after being aged under continuous 85 °C heating stress 40 ± 5% RH humidity ≈600 ≈1200 h 1-sun illumination, respectively.

Language: Английский

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In Situ Nbo X as an Efficient Interfacial Layer on Sno2 Electron-Transport Layer for High‐Performance Flexible Perovskite Solar Cells

Published: Jan. 1, 2025

The long‐term environmental and mechanical stability issue of perovskite solar cells (PSCs) hinders their commercialization. interface defects affect device power conversion efficiency (PCE), which is derived from the carrier recombination properties between adjacent layers. Herein, we report an in situ formed NbOx passivation layer at SnO2/perovskite with micro island bulge nanostructures. This approach reduces nonradiative losses optimized band alignment. As a result, open‐circuit voltage 1.13 to 1.17 V, leading PCE 23.64% (active area 0.09 cm2). Additionally, PSCs demonstrated exceptional stability, retaining over 80% initial efficiencies after 2,000 h exposure ambient atmosphere without encapsulation. Furthermore, solution-processed low-temperature available interfacial was applied flexible cell (F-PSCs), achieving 21.86%. Again, it maintains more than 74.94% values 10,000 ultimate bending cycles.

Language: Английский

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Perovskite Solar Cells Incorporated with Urea Processing Additives

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

Published: Jan. 17, 2025

In the past decade, photovoltaic community has been motivated by rapid development of perovskite solar cells (PSCs). Many approaches have attempted to boost both power conversion efficiency (PCE) and stability PSCs. Studies indicated that processing additives could optimize optoelectronic properties film morphologies metal halide perovskites, thereby boosting device performance Herein, we report a boosted PCE PSCs based on MAPbI3 (where MA+ is CH3NH3+) thin film, which processed with urea additives. Compared pristine find suppress defects, enlarge crystallinity, charge transport, restrict nonradiative recombination, enhance hydrophobic resultant film. Thus, exhibit 22.02%, 15% enhancement compared those Moreover, possess remarkably suppressed photocurrent hysteresis Our studies demonstrate perovskites are facile way

Language: Английский

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Interlayer enhancement of organic solar cells efficiency

Dyes and Pigments, Journal Year: 2025, Volume and Issue: 239, P. 112738 - 112738

Published: March 6, 2025

Language: Английский

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C ₆₀ -based ionic salt electron shuttle for high-performance inverted perovskite solar modules

Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Although C 60 is usually the electron transport layer (ETL) in inverted perovskite solar cells, its molecular nature of leads to weak interfaces that lead non-ideal interfacial electronic and mechanical degradation. Here, we synthesized an ionic salt from , 4-(1',5′-dihydro-1'-methyl-2' H -[5,6] fullereno-C - I h -[1,9-c]pyrrol-2'-yl) phenylmethanaminium chloride (CPMAC), used it as shuttle PSCs. The CH 2 -NH 3 + head group CPMA cation improved ETL interface enhanced packing, leading ~3-fold increase toughness compared . Using CPMAC, obtained ~26% power conversion efficiencies (PCEs) with ~2% degradation after 2,100 hours 1-sun operation at 65°C. For minimodules (four subcells, 6 centimeters square), achieved PCE ~23% <9% 2,200 55°C.

Language: Английский

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High‐Performance Perovskite Solar Cells via Synergistic Grating Microstructures and Dynamic‐Bonded Ion‐Conductive Elastomers

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

Published: April 25, 2025

Abstract Perovskite solar cells (PSCs) have emerged as a prominent focus in energy research owing to their remarkable power conversion efficiency (PCE). However, the realization, maintenance, and even repair of high perovskite are still difficult issues. Herein, synergistic strategy grating microstructures ion‐conducting elastomers (ICE) based on dynamic hindered urea‐carbamate bonds is proposed realize high‐efficiency long‐term stable PSCs. The microstructured PbI 2 (G‐PbI ) can initially optimize crystallization behavior perovskite, fact that introduction ICE achieves 25.61% efficient featuring graded demonstrates triple‐functionality: i) Abundant carbonyl (‐C(O)‐) coordination sites within strongly interact with , enhancing kinetics; ii) intrinsic conductivity facilitates charge carrier transport extraction at grain boundaries interfaces; iii) moisture‐responsive urea coupled bond reorganization endows device exceptional hydrothermal stability (T 80 >1500 h), more interestingly, ICE‐containing devices be simply heat‐treated recover photovoltaic performance. A hierarchical covalent networks opens new insights into field constructing, maintaining, restoring

Language: Английский

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