IF 7.8 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2026-10-21 Epub Date: 2026-10-10 DOI: 10.1021/acsami.6c12290

Jiani Chen, Meili Ding, Xiaotong Fu, Jianfeng Yao

{"title":"Multivariate Zeolitic Imidazolate Framework Derived Hollow NiCo2O4 for Selective Alkene Oxidation by Oxygen Vacancy Engineering","authors":"Jiani Chen, Meili Ding, Xiaotong Fu, Jianfeng Yao","doi":"10.1021/acsami.6c12290","DOIUrl":"10.1021/acsami.6c12290","url":null,"abstract":"Selective oxidation of alkene to valuable chemical feedstocks is challenging due to the seesaw effect between conversion and selectivity. Here, multivariate zeolitic imidazolate frameworks (ZIFs) are transformed into bimetallic oxides with varied morphologies via tannic acid (TA) etching and calcination. Impressively, TA etching results in the formation of oxygen vacancies and pore expansion, and the hollow architecture is generated after pyrolysis, favoring the exposure of more active sites and rapid mass diffusion, as well as inducing prominent void-confinement effects. Besides, the incorporation of nickel ions can introduce an additional type of Lewis acid sites into the resulting bimetallic oxides. The obtained Co3Ni1-TA1.4-10-400 exhibits an effective styrene-to-benzaldehyde oxidation with nearly total conversion and a 99% yield (5 h, 90 °C), approximately 1.9 and 8.3 times higher than those of Co3Ni1-TA1.4-10 (51%) and Co3Ni1-O (12%), respectively. Mechanistic investigations for the conversion of styrene to benzaldehyde further indicate that the reaction possibly proceeds via a synergistic mechanism involving both a metal-peroxide pathway and a free-radical pathway. Furthermore, in the presence of sodium bicarbonate, Co3Ni1-TA1.4-10-400 can prove effective in catalytic epoxidation of styrene. This study provides a valid approach for the construction of ZIF derivatives with abundant oxygen vacancies and unsaturated metal sites as promising catalysts for fine and commodity chemical production.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 41","pages":"56081–56091"},"PeriodicalIF":7.8,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Morphology-Regulated Tail State Energetic Disorder via Selective Third Component Incorporation in Sequentially Deposited Organic Solar Cells

IF 11.9 2区材料科学

Journal of Materials Chemistry A Pub Date : 2026-10-21 DOI: 10.1039/d6ta05063h

Changwoo Park,Gayoung Ham,Damin Lee,Young Yong Kim,Hyojung Cha

{"title":"Morphology-Regulated Tail State Energetic Disorder via Selective Third Component Incorporation in Sequentially Deposited Organic Solar Cells","authors":"Changwoo Park,Gayoung Ham,Damin Lee,Young Yong Kim,Hyojung Cha","doi":"10.1039/d6ta05063h","DOIUrl":"https://doi.org/10.1039/d6ta05063h","url":null,"abstract":"Sequential deposition (SD) processing enables independent regulation of the morphology and electronic structure of donor and acceptor layers in organic solar cells (OSCs). However, its layer-specific impact on energetic disorder and charge carrier dynamics upon incorporation of a third component in SD architectures remains poor understood. Herein, we investigate how selective incorporation of a third component, IT-Th, into the donor and/or acceptor layers regulates tail state energetic disorder and carrier dynamics in SD OSCs. Dual incorporation of IT-Th into both layers induces an interpenetrating network with enhanced face-on molecular orientation and strengthened π-π stacking, as revealed by GIWAXS and compositional depth profiling. This optimized molecular organization suppresses energetic disorder near the band edges, resulting in a reduced density and shallower distribution of tail states. Importantly, transient absorption analyses reveal that prolonged charge carrier lifetimes do not necessarily indicate suppressed recombination, instead, they reflect increased carrier residence in energetically shallow tail states, which reduces the effective electron-hole encounter probability. By decoupling charge carrier lifetime from device efficiency, this work demonstrates that tail-state regulation, rather than lifetime prolongation alone, is a critical determinant of charge transport and recombination in SD OSCs, providing mechanistic insight into tail state formation beyond conventional efficiency-driven optimization.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"88 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Facet-Oriented h-WO3/BiVO4 Photoanodes Coupled with Fluorine-Tuned MnOOH Cocatalysts for Enhanced Photoelectrochemical Water Oxidation

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-21 DOI: 10.1039/d6nr02821g

Yan Bian,Wenhao He,Mingxu Jia,Jianye Liu,Yang Liu,Jie Li

{"title":"Facet-Oriented h-WO3/BiVO4 Photoanodes Coupled with Fluorine-Tuned MnOOH Cocatalysts for Enhanced Photoelectrochemical Water Oxidation","authors":"Yan Bian,Wenhao He,Mingxu Jia,Jianye Liu,Yang Liu,Jie Li","doi":"10.1039/d6nr02821g","DOIUrl":"https://doi.org/10.1039/d6nr02821g","url":null,"abstract":"WO3/BiVO4 heterojunction films represent promising photoanode materials for photoelectrochemical (PEC) water splitting but remain limited by inefficient charge extraction across the heterojunction and sluggish surface oxygen-evolution kinetics. Herein, we report a facet-oriented h-WO3/BiVO4 photoanode coupled with an F-doped MnOOH cocatalyst to sequentially optimize heterojunction charge transport and surface hole utilization. The (110)-oriented h-WO3 scaffold provides an efficient electron-transport backbone for the BiVO4 absorber, while the in situ deposited F:MnOOH layer modulates the electronic structure of Mn-centered catalytic sites and accelerates interfacial hole transfer. The resulting WO3-110@BiVO4@F:MnOOH photoanode delivers a remarkable photocurrent density of 3.68 mA cm-2 with high charge separation (95.58%) and injection efficiencies (69.24%) at 1.23 V vs. RHE under AM 1.5G illumination, corresponding to a 1.66-fold enhancement over WO3-110@BiVO4. Electrochemical impedance spectroscopy, intensity-modulated photocurrent spectroscopy, and photoluminescence analyses further confirm reduced interfacial resistance, accelerated carrier transport, and suppressed recombination. Density functional theory calculations suggest that F incorporation redistributes charge around Mn sites and lowers the thermodynamic limitation of the *OH-to-*O step. This work demonstrates a rational strategy for coupling crystallographic scaffold engineering with cocatalyst electronic modulation to improve PEC water oxidation.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"12 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Simultaneously harnessing interfacial molecular layer and solvation structure for highly reversible and stable zinc metal anodes

IF 11.9 2区材料科学

Journal of Materials Chemistry A Pub Date : 2026-10-21 DOI: 10.1039/d6ta07104j

Jiaxin Hu,Jie Wu,Wenzhen Du,Shenglong Wu,Weijie Zhang,Meng Yao,Qiongguang Li

{"title":"Simultaneously harnessing interfacial molecular layer and solvation structure for highly reversible and stable zinc metal anodes","authors":"Jiaxin Hu,Jie Wu,Wenzhen Du,Shenglong Wu,Weijie Zhang,Meng Yao,Qiongguang Li","doi":"10.1039/d6ta07104j","DOIUrl":"https://doi.org/10.1039/d6ta07104j","url":null,"abstract":"The zinc metal anode (ZMA) suffers from uncontrollable dendrite growth and severe parasitic reactions, which restrict its cycling stability and practical applications.Herein, we simultaneously tailor the interfacial molecular layer and the solvation structure to achieve a highly reversible and stable ZMA by introducing sodium 5sulfoisophthalate dimethyl ester (SIPM) as a multifunctional electrolyte additive.Comprehensive theoretical analyses and experimental results reveal that the multiple active sites (-SO-3 and -COOCH 3 ) endow SIPM with excellent zincophilicity, enabling its preferential adsorption on the ZMA surface to form an interfacial molecular layer, while simultaneously modulating the Zn 2+ solvation structure in the bulk electrolyte. This dual functionality markedly reduces the de-solvation energy barrier and weakens the reactivity of water molecules. Consequently, the synergistic regulation of the interfacial layer and solvation structure effectively suppresses water-induced parasitic reactions and induces uniform Zn 2+ deposition. The Zn||Zn symmetric cell maintains stable cycling for over 2180 h at 10 mA cm -2 and 1 mAh cm -2 , and the Zn||V 2 O 5 full battery delivers a high capacity retention of 79.6% after 2500 cycles at 10 A g -1 . This work provides new insights into the synergistic structural regulation of both interfacial chemistry and bulk electrolyte, holding great promise for accelerating the practical application of aqueous zinc batteries.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"233 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Small-molecule-induced species redistribution drives amyloid remodeling along a conserved kinetic landscape

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-21 DOI: 10.1039/d6nr03117j

Radhika V Nair,Bich N Tran,Atul Parikh,Matthew Foreman

{"title":"Small-molecule-induced species redistribution drives amyloid remodeling along a conserved kinetic landscape","authors":"Radhika V Nair,Bich N Tran,Atul Parikh,Matthew Foreman","doi":"10.1039/d6nr03117j","DOIUrl":"https://doi.org/10.1039/d6nr03117j","url":null,"abstract":"Proteins in living systems are highly dynamic, continuously populating heterogeneous ensembles of functionally distinct conformational and aggregation states whose relative populations and interconversion rates are governed by an underlying free-energy landscape. Perturbations such as ligand binding, chemical modification, or changes in the environment remodel these assemblies, thereby reshaping protein behavior and function. Understanding how such protein networks are dynamically remodeled is a fundamental challenge in biophysics. Here, we utilize the Aβ42 aggregation landscape as a model to demonstrate that remodeling can occur without detectable changes in the apparent activation free-energy barrier, instead arising from system-level redistribution of species along a conserved kinetic pathway. Using EPPS (4-(2-Hydroxyethyl)-1-piperazinepropanesulfonic acid) as a model modulator, temperaturedependent kinetic analysis reveals an invariant apparent activation free energy, suggesting that the underlying energetic framework remains unchanged even as the system is reshaped. We find that EPPS modulates Aβ42 disaggregation in a concentration-dependent manner. At intermediate concentrations, enhanced redistribution toward soluble species is observed, whereas at higher concentrations, modulator self-association into supramolecular clusters is associated with reduced net disaggregation and partial recovery of aggregation signatures. Thermal disruption of these assemblies restores activity, consistent with a role of modulator self-association in governing the observed behavior. Furthermore, our experiments indicate that this disaggregation process is reduced in crowded environments compared to dilute conditions. Together, these results support a biophysical framework in which amyloid remodeling is driven by species redistribution along a conserved kinetic landscape, where the extent of disaggregation is determined by modulator concentration-dependent partitioning of protein species, modulator self-association, and environmental constraints.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"18 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149225907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Polarization Modulation in Core–Shell Halloysite Nanotubes@Sulfides for Broadband Electromagnetic Wave Absorption 核壳型高岭土Nanotubes@Sulfides中宽带电磁波吸收的极化调制

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2026-10-21 DOI: 10.1021/acsami.6c19298

Hongcheng Shang,Yingzhi Jiao,Runzhi Jiang,Chaolin He,Lanchao Wen,Jun Qiu,Mengna Feng,Rongshen Tian,Siyao Cheng,Juhua Luo

引用次数: 0

Interface Engineering of Hydrated Tungsten Oxide via Carbon Nitride for Durable Electrochromic Energy Storage 氮化碳水合氧化钨持久电致变色储能界面工程

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2026-10-21 DOI: 10.1021/acsami.6c15458

Himanshu Nath,Alok Kumar,Nikhil Singh,Lavanya Singh Malik,Dibyajyoti Ghosh,Ritu Gupta

{"title":"Interface Engineering of Hydrated Tungsten Oxide via Carbon Nitride for Durable Electrochromic Energy Storage","authors":"Himanshu Nath,Alok Kumar,Nikhil Singh,Lavanya Singh Malik,Dibyajyoti Ghosh,Ritu Gupta","doi":"10.1021/acsami.6c15458","DOIUrl":"https://doi.org/10.1021/acsami.6c15458","url":null,"abstract":"Electrochromic smart windows demand high optical contrast, fast switching, long-term durability, and charge-storage functionality, yet hydrated tungsten oxides suffer from restricted ion transport and structural degradation during repeated ion insertion/extraction. Here, we present a carbon nitride-driven phase transformation strategy for a durable energy-storing electrochromic hydrated tungsten oxide. Under mild hydrogen annealing, orthorhombic WO3·H2O nanoplates containing an optimized 10 wt % carbon nitride (CNx) selectively transform into predominantly hexagonal WO3·0.33H2O nanorods (∼80%), accompanied by a relatively minor orthorhombic fraction (∼20%). The CNx promotes structural rearrangement while providing nitrogen-rich Li+-interactive sites that regulate interfacial ion transport and improve electrochemical reversibility. Supported by density functional theory, impedance, diffusion, and postcycling analyses, the optimized WHX-CNx10% film shows favorable Li+ insertion, improved charge-transfer kinetics, and excellent structural retention. The air spray-coated film in 3-electrode system delivers 57% optical modulation at 650 nm, coloration/bleaching times of 2.9/0.6 s, stable cycling over 20,000 cycles, and an areal capacitance of 16.9 mF/cm2. A 5 × 5 cm2 device further exhibits optical modulation of 52% at 650 nm with a coloration efficiency of ∼156 cm2/C. These results establish CNx-mediated phase and interface engineering as an effective route toward scalable, durable, and energy-storing electrochromic smart windows.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"33 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Quadruple Boronic Acid-Functionalized Lanthanide MOFs Enable Deep and Unbiased Spatial Proteomics from Ultra-Trace Laser-Captured Microtissues 四重硼酸功能化镧系mof从超痕量激光捕获的显微组织中实现深度和无偏倚的空间蛋白质组学

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2026-10-20 DOI: 10.1021/acsami.6c12158

Yuankang Zhu,Jiahui Wu,Qi Luo,Shuang Zhang,Qingwen Wang,Lai Jiang,Junli Duan,Alex F. Chen,Xianting Ding

{"title":"Quadruple Boronic Acid-Functionalized Lanthanide MOFs Enable Deep and Unbiased Spatial Proteomics from Ultra-Trace Laser-Captured Microtissues","authors":"Yuankang Zhu,Jiahui Wu,Qi Luo,Shuang Zhang,Qingwen Wang,Lai Jiang,Junli Duan,Alex F. Chen,Xianting Ding","doi":"10.1021/acsami.6c12158","DOIUrl":"https://doi.org/10.1021/acsami.6c12158","url":null,"abstract":"Spatial proteomics of laser capture microdissection (LCM) specimens is fundamentally constrained by protein loss during processing of ultra-trace samples, limiting proteomic depth and biological insight. Here, we report the integration of a quadruple metal–organic framework (qMOF)-enhanced surfactant-assisted one-pot sample preparation (MSOP) workflow for deep proteomic profiling of micro-scale tissues. The qMOF composite, featuring high-density boronic acid functionalities, acts as a potent protein capture vehicle, drastically minimizing surface adsorption losses. Applied to LCM-isolated mouse myocardial sections as small as 100 × 100 μm (∼20 cells), the MSOP workflow approximately doubled the number of confidently identified proteins, compared to the conventional surfactant-assisted one-pot sample preparation (SOP) method (mean of 2238 vs. 1116), while exhibiting lower quantification variance and preserving unbiased coverage of the proteome’s physicochemical landscape. We further demonstrate the workflow's utility by resolving spatially distinct proteomic signatures in perivascular regions of aged cardiac tissue, identifying molecular hallmarks of aging characterized by impaired cytoskeletal stability and dysregulated mitochondrial functions. Protein–protein interaction network analysis identified Rack1 as a potential key node in cardiac aging, which was further validated by immunohistochemistry. This MSOP-assisted platform provides a robust, cost-effective, and highly sensitive chemical strategy to significantly enhance the depth of discovery-driven spatial proteomics.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"29 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Three-Dimensional Crosslinked CNT/SiOx-F Network Encapsulated by Pitch-Derived Carbon as a High-Stable Anode for Lithium-Ion Batteries 沥青衍生碳包封的三维交联碳纳米管/SiOx-F网络作为锂离子电池的高稳定阳极

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2026-10-20 DOI: 10.1021/acsami.6c14348

Kexin Ma,Lijun Wang,Jie Xu,Tianqi Wang,Yang Liu,Yanyan Liu,Liping Zhou,Zhong Jin,Lin Sun

{"title":"Three-Dimensional Crosslinked CNT/SiOx-F Network Encapsulated by Pitch-Derived Carbon as a High-Stable Anode for Lithium-Ion Batteries","authors":"Kexin Ma,Lijun Wang,Jie Xu,Tianqi Wang,Yang Liu,Yanyan Liu,Liping Zhou,Zhong Jin,Lin Sun","doi":"10.1021/acsami.6c14348","DOIUrl":"https://doi.org/10.1021/acsami.6c14348","url":null,"abstract":"Intrinsic low conductivity and huge volume expansion severely limit the cycling stability of SiOx anodes. Herein, a 3D crosslinked CNT/SiOx-F@C composite is synthesized via bifunctional fluorosilane crosslinkers and conformal pitch carbon coating. Fluorosilane acts as both a silicon source and a crosslinker to build interconnected, conductive CNT frameworks, while the outer pitch carbon optimizes the pore structure and induces flexible, LixPOyF6-rich SEI layers. Kinetic tests reveal dominant capacitive charge storage and a Li+ diffusion coefficient one-order-of-magnitude higher than that of control electrodes. The half-cell delivers a stable reversible capacity of 672.6 mA h g–1 over 200 cycles at 0.2 A g–1 and retains 86.5% capacity after 600 cycles at 1 A g–1. Pre-lithiation elevates the initial Coulombic efficiency from 47.4 to 84.2%, while the electrode achieves an areal capacity approaching 4 mA h cm–2, far exceeding that of commercial graphite. This dual-carbon synergistic strategy provides a facile route to optimizing silicon oxide anodes.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"253 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Achieving Robust Ferroelectric Properties of Hf0.6Zr0.4O2 Thin Films through the Pseudofield-Inducing Effect of Al0.85Sc0.15N Bottom Electrode 利用Al0.85Sc0.15N底电极的赝场诱导效应实现Hf0.6Zr0.4O2薄膜的鲁棒铁电性能

IF 17.1 1区材料科学

ACS Nano Pub Date : 2026-10-20 DOI: 10.1021/acsnano.6c13488

Han Sol Park,Seungheon Choi,Min Kyu Yeom,Sanghyup Lee,Sahngik A. Mun,Cheol Seong Hwang

{"title":"Achieving Robust Ferroelectric Properties of Hf0.6Zr0.4O2 Thin Films through the Pseudofield-Inducing Effect of Al0.85Sc0.15N Bottom Electrode","authors":"Han Sol Park,Seungheon Choi,Min Kyu Yeom,Sanghyup Lee,Sahngik A. Mun,Cheol Seong Hwang","doi":"10.1021/acsnano.6c13488","DOIUrl":"https://doi.org/10.1021/acsnano.6c13488","url":null,"abstract":"Although ferroelectric (FE) Zr-doped HfO2 (HZO) is a promising material for ferroelectric random-access memory (FeRAM), achieving high remnant polarization (Pr) with a low coercive field (EC) at film thicknesses ≲10 nm remains challenging. This work demonstrates a multifunctional bottom electrode (BE) strategy by inserting a pristine, down-poled ferroelectric Al1–xScxN (ASN) layer into the BE, thereby inducing high mechanical stress and an internal field during HZO crystallization. The pristine down-polarization of ASN increased the c-axis preference of the overlying HZO film, as indicated by the contrast in the electrical characteristics and surface potential responses depending on the ASN poling direction. The ASN-containing BE imposes additional in-plane tensile stress on HZO due to ASN’s low thermal expansion coefficient, facilitating orthorhombic phase formation. Consequently, 9 nm-thick HZO on the ASN-containing BE exhibits a large 2Pr of 81 μC/cm2 by conventional polarization-electric field (P-E) measurement and 68 μC/cm2 by positive-up-negative-down (PUND) compared with that of the TiN BE (43 μC/cm2, and 41 μC/cm2) with a pristine negative-bias imprint. These effects enable a high 2Pr/EC ratio without a significant increase in EC after wake-up, resulting in faster switching characteristics. Furthermore, it also enables the 5 nm-thick HZO film to overcome the pristine pinched hysteresis associated with tetragonal-phase stabilization, thereby achieving robust ferroelectric performance while suppressing wake-up behavior.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"73 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218800","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

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