Advanced Functional Materials最新文献_第5页

Rapid and Scalable Preparation of Highly Uniform, Atomically Thin MSe2 (M = Ti, Nb, Ta) Nanosheets as Ultra‐Sensitive SERS Substrates for Lateral Flow Immunoassay

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-06 DOI: 10.1002/adfm.202420786

Yuancai Ge, Haiyang Wang, Qihao Li, Qian Li, Ying Yang, Ruohua Zhu, Jinmei Yang, Xiaohu Liu, Qingwen Zhang, Yi Wang

{"title":"Rapid and Scalable Preparation of Highly Uniform, Atomically Thin MSe2 (M = Ti, Nb, Ta) Nanosheets as Ultra‐Sensitive SERS Substrates for Lateral Flow Immunoassay","authors":"Yuancai Ge, Haiyang Wang, Qihao Li, Qian Li, Ying Yang, Ruohua Zhu, Jinmei Yang, Xiaohu Liu, Qingwen Zhang, Yi Wang","doi":"10.1002/adfm.202420786","DOIUrl":"https://doi.org/10.1002/adfm.202420786","url":null,"abstract":"Surface‐enhanced Raman scattering (SERS) substrates based on 2D semimetallic materials have emerged as novel detecting platforms for detecting at the single‐molecule level due to the high charge transfer efficiency between the layered materials and analytes. However, current methods such as chemical vapor deposition (CVD) or liquid‐phase exfoliation face significant challenges in simultaneously achieving high yield and low defect density in preparing layered materials, which often leads to compromises in SERS efficiency or sensitivity, thereby limiting large‐scale applications. Herein, an improved electrochemical cathodic exfoliation (ECE) protocol, developed through recent advancements, is employed to produce highly uniform and solution‐processable TiSe2, NbSe2, and TaSe2 monolayers with over 95% yield in 120 min. The SERS sensitivity (10−16 M for Rhodamine 6G) of 2D materials from ECE rivals that of CVD‐prepared monolayers due to their low defect density. Using NbSe2 as the SERS substrate, matrix metalloproteinase‐9 in tear fluid is detected across 0.01 to 100 ng mL−1, outperforming conventional enzyme‐linked immunosorbent assay methods that typically detect at 1 ng mL−1. The scalability of the modified ECE process not only facilitates its integration into lateral flow immunoassays but also paves the way for bridging the gap between practical applications and highly sensitive SERS detection using 2D materials.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"37 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Flexible Photovoltaic Fatigue Factor for Quantification of Mechanical Device Performance

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-06 DOI: 10.1002/adfm.202422706

Lulu Sun, Kenjiro Fukuda, Ruiqi Guo, Luigi A. Castriotta, Karen Forberich, Yinhua Zhou, Takao Someya, Christoph J. Brabec, Osbel Almora

{"title":"A Flexible Photovoltaic Fatigue Factor for Quantification of Mechanical Device Performance","authors":"Lulu Sun, Kenjiro Fukuda, Ruiqi Guo, Luigi A. Castriotta, Karen Forberich, Yinhua Zhou, Takao Someya, Christoph J. Brabec, Osbel Almora","doi":"10.1002/adfm.202422706","DOIUrl":"https://doi.org/10.1002/adfm.202422706","url":null,"abstract":"Flexible emerging photovoltaic technologies, such as organic and perovskite photovoltaics, hold great potential for integration into tents, wearable electronics, and other portable applications. Recently, Fukuda et al. (2024) propose a bending test protocol for standardizing the mechanical performance characterization of flexible solar cells, focusing on 1% strain over 1 000 bending cycles. This marked an important step toward establishing consistency and good practices in the literature. However, even with this unified protocol, accurately comparing the mechanical flexibility of solar cells is hindered by the variated influence of parameters like thickness, bending radius, and power conversion efficiency (PCE) evolution during mechanical testing. Herein, a new figure of merit is introduced, the flexible photovoltaic fatigue factor (F), which integrates PCE retention, strain, and bending cycles into a cohesive framework. Guided by a detailed multilayer mechanical model, this metric enables more accurate strain analysis and promotes consistent reporting, paving the way for performance optimization in flexible photovoltaics.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"27 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

“Heat‐Press‐N‐Go” Stretchable Interconnects Enabled by Liquid Metal Conductor with Supramolecular Confinement

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-06 DOI: 10.1002/adfm.202425264

Liqing Ai, Weikang Lin, Limei Ai, Yannan Li, Mengyi Qiang, Xiaoya Wang, Min Shi, Zhengbao Yang, Xi Yao

{"title":"“Heat‐Press‐N‐Go” Stretchable Interconnects Enabled by Liquid Metal Conductor with Supramolecular Confinement","authors":"Liqing Ai, Weikang Lin, Limei Ai, Yannan Li, Mengyi Qiang, Xiaoya Wang, Min Shi, Zhengbao Yang, Xi Yao","doi":"10.1002/adfm.202425264","DOIUrl":"https://doi.org/10.1002/adfm.202425264","url":null,"abstract":"The integration of soft, conformable components and rigid microelectronics or devices is a critical frontier in stretchable hybrid device development. However, engineering interconnects capable of tolerating high‐stress concentrations and preventing debonding failures remain a key challenge. Here a stretchable conductive interconnect derived from the liquid metal conductor with supramolecular confinement is reported, capable of reliably connecting soft and rigid parts through a simple “Heat‐Press‐N‐Go” method. Leveraging the dynamic bonding nature of supramolecular polymers, when confined within liquid metal compartments, not only effectively stabilizes the conductive path of the stretchable interconnect, but also offers high adhesion to diverse surfaces, reaching an exceptional electrical stretchability of up to 2800%. As proof of concept, this interconnect is used to assemble wearable devices including reconfigurable stretchable circuits, multifunctional sensors, and on‐skin electromyography, exhibiting high signal integrity and mechanical durability. The “Heat‐Press‐N‐Go” chip and circuit integration offers the boundless potential to enhance the adaptability, convenience, and versatility of on‐skin and wearable electronics across various applications.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"28 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Functional p‐π Conjugated Organic Layer Empowers Stable Sodium Metal Batteries

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-06 DOI: 10.1002/adfm.202420573

Zhen Shen, Zhihui Bo, Ruijuan Shi, Luojia Liu, Haixia Li, Xunzhu Zhou, Jiazhao Wang, Yong Zhao, Lin Li

{"title":"Functional p‐π Conjugated Organic Layer Empowers Stable Sodium Metal Batteries","authors":"Zhen Shen, Zhihui Bo, Ruijuan Shi, Luojia Liu, Haixia Li, Xunzhu Zhou, Jiazhao Wang, Yong Zhao, Lin Li","doi":"10.1002/adfm.202420573","DOIUrl":"https://doi.org/10.1002/adfm.202420573","url":null,"abstract":"Sodium metal batteries (SMBs) with the advantages of high energy density and low cost have attracted extensive attention as next‐generation rechargeable battery technology. However, SMBs suffer from severe Na dendrite and undesired solid electrolyte interface (SEI) layer, which inevitably destroy cycling durability and safety. Herein, a p‐π conjugated organic molecule (OHTAPQ) with redox‐active carbonyls and pyrazines is employed as a robust artificial SEI layer on Na anode (denoted as OHTAPQ@Na) to address these issues. The unique chelation of N and O with Na+ ions in an OHTAPQ‐based layer facilitates good adsorption capacity and low Na+ diffusion barries for uniform Na deposition behavior. As a result, the OHTAPQ@Na||OHTAPQ@Na symmetric cell shows a long‐term cycle lifespan (over 1500 h at 2 mA cm−2), and the OHTAPQ@Na||Na3V2(PO4)3 cells deliver a capacity retention of 82% after 1600 cycles. This research provides a handy way for anode protection with functional conjugated organics in SMBs.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"1 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Constructing Robust and Efficient Ceramic Cells Air Electrodes Through Collaborative Optimization Bulk and Surface Phases

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-05 DOI: 10.1002/adfm.202422531

Ying Zhang, Yibei Wang, Zhilin Liu, Zhen Wang, Yaowen Wang, Youcheng Xiao, Bingbing Niu, Xiyang Wang, Wenquan Wang, Tianmin He

{"title":"Constructing Robust and Efficient Ceramic Cells Air Electrodes Through Collaborative Optimization Bulk and Surface Phases","authors":"Ying Zhang, Yibei Wang, Zhilin Liu, Zhen Wang, Yaowen Wang, Youcheng Xiao, Bingbing Niu, Xiyang Wang, Wenquan Wang, Tianmin He","doi":"10.1002/adfm.202422531","DOIUrl":"https://doi.org/10.1002/adfm.202422531","url":null,"abstract":"Slow reaction kinetics of air electrodes is a common problem faced by low-temperature (<650 °C) oxygen-ion conducting solid oxide fuel cells (O-SOFCs) and proton-conducting reversible proton ceramic cells (R-PCCs). Here, an innovative approach is proposed to design and prepare two efficient and durable Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF)-based nanocomposites through self-reconstruction strategy, which aim to optimize both the bulk and surface properties of electrode materials simultaneously. Specifically, the two nanocomposites with a nominal composition of Ba0.4Sr0.5Cs0.1Co0.7Fe0.2M0.1O3−δ (M═Ni, Zr) consisted of the major perovskite phase and surface-enriched NiO and BaZrO3 minor phases. When Ba0.4Sr0.5Cs0.1Co0.7Fe0.2Ni0.1O3−δ (BSCsCFNi) is used as an air electrode in O-SOFCs, the peak power density is 1.36 W cm−2 at 650 °C; while Ba0.4Sr0.5Cs0.1Co0.7Fe0.2Zr0.1O3−δ (BSCsCFZr) is used in R-PCCs, a peak power density of 1.24 W cm−2 and a current density of −1.98 A cm−2 (1.3 V) are achieved at 650 °C, and exhibits stable reversibility over 100 h. Theoretical calculations and experiments indicate that Cs+ doping enhances the bulk conduction of oxygen ions and protons; NiO nanoparticles enhance oxygen adsorption and surface exchange; BaZrO3 nanoparticles increase steam adsorption and hydration capacity. This study provides a new idea for designing efficient and durable air electrodes of ceramic cells.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"21 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Asymmetric S Heteroatom Coordinated Dual-Atom Catalysts and Coupled Anodic Sulfion Oxidation to Boost Electrocatalysis Oxygen Reduction

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-05 DOI: 10.1002/adfm.202420157

Jun Wang, Xiaomei Liu, Chengbo Ma, Xiaoguang Duan, Shuai Li, Ning Li, Wen Liu, Yang Li, Xiaobin Fan, Wenchao Peng

{"title":"Asymmetric S Heteroatom Coordinated Dual-Atom Catalysts and Coupled Anodic Sulfion Oxidation to Boost Electrocatalysis Oxygen Reduction","authors":"Jun Wang, Xiaomei Liu, Chengbo Ma, Xiaoguang Duan, Shuai Li, Ning Li, Wen Liu, Yang Li, Xiaobin Fan, Wenchao Peng","doi":"10.1002/adfm.202420157","DOIUrl":"https://doi.org/10.1002/adfm.202420157","url":null,"abstract":"Considering the exceptional electronic regulation capability, p-block elements can be used to regulate the charge density of traditional transition metal catalysts. In this work, CoGa-NS-C dual-atom catalysts (DACs) are successfully synthesized through co-precipitation and post-annealing treatment. The atomic dispersion of Co and Ga and the synergistic coordination structure of CoN3S1 and GaN4 are confirmed by AC-TEM, EXAFS, and XPS. Due to the steric hindrance effect of adsorbed *OH on the Ga site and the asymmetric S heteroatom coordination on Co species, the adsorption energy of *OOH intermediation on neighboring Co is thus enhanced greatly, resulting in the enhancement of the 2e-ORR pathway. Besides, *OOH and Co─OH intermediates are detected by in situ FT-IR and EC-SHINERS spectroscopy. A high H2O2 selectivity of 90.3% and a fast H2O2 production rate of 1.12 mol h−1 g−1 can be reached. In addition, the cathodic oxygen reduction is used to couple with sulfion oxidation reaction (SOR) instead of the energy-intensive OER reaction. In this coupling system, the SOR potential is 1.31 V lower than the OER process at the current intensity of 100 mA. Both the proposed dual-atom DACs regulation strategy by p-block elements and the ORR-SOR coupling system are beneficial for achieving efficient and energy-effective 2e-ORR.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"5 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomimetic Design of Biocompatible Neural Probes for Deep Brain Signal Monitoring and Stimulation: Super Static Interface for Immune Response-Enhanced Contact

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-05 DOI: 10.1002/adfm.202417727

Jeonghwa Jeong, Gyeonghwa Heo, Young Woo Kwon, Seon Yeong Chae, Min Jae Kim, Ki Jun Yu, Hwa Kyoung Shin, Suck Won Hong

{"title":"Biomimetic Design of Biocompatible Neural Probes for Deep Brain Signal Monitoring and Stimulation: Super Static Interface for Immune Response-Enhanced Contact","authors":"Jeonghwa Jeong, Gyeonghwa Heo, Young Woo Kwon, Seon Yeong Chae, Min Jae Kim, Ki Jun Yu, Hwa Kyoung Shin, Suck Won Hong","doi":"10.1002/adfm.202417727","DOIUrl":"https://doi.org/10.1002/adfm.202417727","url":null,"abstract":"The ability to measure changes in neural activities using devices implanted in the brain can be useful for recording brain signals to assess specific risk factors, monitor the development of brain diseases, and expand the understanding of neural circuitry. Here, a neuroimplantable interface is introduced that integrates biomaterials with an advanced structural design to facilitate monitoring of electrophysiological responses in widespread brain regions. The neural interface uses biocompatible and photopatternable materials to create ultrathin, homogeneous encapsulant/substrate laminates. Comprehensive in vitro tests of the laminin-enveloped neural interface demonstrate efficacy in relieving inflammation via a biomimetic strategy by diminishing microglia and astrocyte aggregation near recording sites, enhancing periodic signal acquisition. The performance is evaluated by injecting an acetylcholine receptor agonist into mouse brains. This approach enables to monitor real-time signal changes, gain insights into neural network dynamics by assessing stimulus-evoked signaling at specific sites, and identify signaling patterns and hippocampal synaptic connections. Additionally, in a Parkinson's disease mouse model, deep brain stimulation is performed and signals are recorded to confirm symptom amelioration, offering a biomedical device approach. The key strategy highlights intact neural electrodes with biocompatible, mechanically compliant materials conferring compact bioelectronic functionalities, high neuronal microenvironment compatibility, and pathological neural system recognition.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"31 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tandem Active Sites in Cu/Mo-WO3 Electrocatalysts for Efficient Electrocatalytic Nitrate Reduction to Ammonia

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-05 DOI: 10.1002/adfm.202420282

Ying Dai, Shuangjun Li, Xue Li, Kaihong Liu, Yanna Guo, Hexing Li, Bo Jiang

{"title":"Tandem Active Sites in Cu/Mo-WO3 Electrocatalysts for Efficient Electrocatalytic Nitrate Reduction to Ammonia","authors":"Ying Dai, Shuangjun Li, Xue Li, Kaihong Liu, Yanna Guo, Hexing Li, Bo Jiang","doi":"10.1002/adfm.202420282","DOIUrl":"https://doi.org/10.1002/adfm.202420282","url":null,"abstract":"Electrocatalytic NO3− reduction to NH3 is a promising technique for both ammonia synthesis and nitrate wastewater treatment. However, this conversion involves tandem processes of H2O dissociation and NO3− hydrogenation, leading to inferior NH3 Faraday efficiency (FE) and yield rate. Herein, a tandem catalyst by anchoring atomically dispersed Cu species on Mo-doped WO3 (Cu5/Mo0.6-WO3) for the NO3RR is constructed, which achieves a superior FENH3 of 98.6% and a yield rate of 26.25 mg h−1 mgcat−1 at −0.7 V (vs RHE) in alkaline media, greatly exceeding the performance of Mo0.6-WO3 and Cu5/WO3 counterparts. Systematic electrochemical measurement results reveal that the promoted activation of NO3− on Cu sites, accompanying accelerated water dissociation producing active hydrogens on Mo sites, are responsible for this superior performance. In situ infrared spectroscopy and theoretical calculation further demonstrate that atomically dispersed Cu sites accelerate the conversion of NO3− to NO2−, and the Mo dopant activates adjacent Cu sites, resulting in the decreased energy barrier of *NO2 to *NO and the stepwise hydrogenation processes, making the synthesis of NH3 thermodynamically favorable. This work demonstrates the critical role of tandem active sites at atomic level in enhancing the electrocatalytic NO3− reduction to NH3, paving a feasible avenue for developing high-performance electrocatalysts.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"42 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to “Ultrafast Electron Dynamics at the P-rich Indium Phosphide/TiO2 Interface”

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-05 DOI: 10.1002/adfm.202424624

Jonathan Diederich, Jennifer Velazquez Rojas, Agnieszka Paszuk, Mohammad Amin Zare Pour, Christian Höhn, Isaac Azahel Ruiz Alvarado, Klaus Schwarzburg, David Ostheimer, Rainer Eichberger, Wolf Gero Schmidt, Thomas Hannappel, Roel van de Krol, Dennis Friedrich

引用次数: 0

Multifunctional FA-Triflate Treatment for Efficiency and Reliability Enhancements of Quasi-2D Perovskite Light-Emitting Di odoes

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-05 DOI: 10.1002/adfm.202422368

Do-Hyun Kwak, Seung-Beom Cho, Chang-Xu Li, Yu-Na Choi, Il-Kyu Park

{"title":"Multifunctional FA-Triflate Treatment for Efficiency and Reliability Enhancements of Quasi-2D Perovskite Light-Emitting Di odoes","authors":"Do-Hyun Kwak, Seung-Beom Cho, Chang-Xu Li, Yu-Na Choi, Il-Kyu Park","doi":"10.1002/adfm.202422368","DOIUrl":"https://doi.org/10.1002/adfm.202422368","url":null,"abstract":"The quasi-2D perovskite family, PEA₂(FA0.7Cs0.3) n-1PbnBr₃n+1 (n = 2, 3, …, ∞), has emerged as an efficient emission layer for next-generation perovskite light-emitting diodes (PeLEDs) due to its self-aligned multi-quantum well structure of mixed phases, facilitating efficient energy transfer from lower to higher n-phases compared to bulk perovskites. However, despite their advantageous energy transfer characteristics, quasi-2D perovskites have suffered from efficiency and stability issues. During the formation of quasi-2D perovskite films, internal defects arise, and the predominant presence of lower n-phase domains in the internal phase distribution leads to susceptibility to external environmental conditions, which are crucial for stability. Here, an approach is proposed to simultaneously enhance the emission efficiency and stability of quasi-2D perovskites by introducing formamidinium trifluoromethanesulfonate (FA-Triflate). FA-Triflate effectively suppresses the formation of lower n-phases, passivates intrinsic defects, and enhances humidity resistance by improving hydrophobicity. This approach increased the photoluminescence quantum yield of quasi-2D perovskite films from 52.2% to 70.4%. PeLEDs with FA-Triflate-treated quasi-2D perovskites show an improvement in external quantum efficiency from 6.4% to 16.6%, along with a device lifetime extension of over 3 000%. These findings demonstrate that FA-Triflate treatment significantly enhances the overall emission efficiency and stability of quasi-2D perovskite films for optoelectronic applications.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"28 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0