材料科学最新文献

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All‐Heat Control of Magnetization Dynamics on Van der Waals Magnets 范德华磁体磁化动力学的全热控制
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-06-23 DOI: 10.1002/adma.202501043
Sumit Haldar, Theodor Griepe, Unai Atxitia, Elton J. G. Santos
{"title":"All‐Heat Control of Magnetization Dynamics on Van der Waals Magnets","authors":"Sumit Haldar, Theodor Griepe, Unai Atxitia, Elton J. G. Santos","doi":"10.1002/adma.202501043","DOIUrl":"https://doi.org/10.1002/adma.202501043","url":null,"abstract":"Heat dissipation in nanomagnetic devices mediated by femtosecond laser excitation constitutes one of the pressing challenges toward energy‐efficient applications yet to be solved. Of particular interest are heterostructures based on 2D van der Waals (vdW) magnets, which benefit from superior interfacial controllability, mechanical flexibility for smart storage platforms, and open‐source for large‐scale production. However, how heat affects the ultrafast magnetization dynamics in such systems, and/or how the spin dynamics can provide alternative pathways for effective heat dissipation have so far been elusive. Here it is shown that the missing link between magnetization dynamics and heat transport is mediated by the thermal conductivity mismatch between the underneath substrate and the vdW magnet. By modeling the laser‐induced ultrafast spin dynamics of three popular vdW materials (CrI<jats:sub>3</jats:sub>, CrGeTe<jats:sub>3</jats:sub>, Fe<jats:sub>3</jats:sub>GeTe<jats:sub>2</jats:sub>) of different electronic characteristics across sixteen substrates of distinct chemical composition, it is found that both the demagnetization and remagnetization timescales are very sensitive to the phonon temperature dynamics through the supporting materials, which defines the heating dissipation efficiency at the interface. The process can be further tuned with the thickness of the vdW magnets, where thin (thick) systems result in faster (slower) magnetization dynamics. It is unveiled that the non‐thermal nature of spin dynamics in vdW heterostructures creates interfacial spin accumulation that generates spin‐polarized currents with dominant frequencies ranging from 0.18 to 1.0 GHz accordingly to the layer thickness and substrate. The findings demonstrate that substrate engineering liaised with the choice of magnetic compounds open venues for efficient spin‐heat control, which ultimately determines the optically excited magnetic characteristics of the vdW layers.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"46 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341067","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
Growth of various in whiskers on Cr-Al-B MAB phases formed during hot-dip aluminizing and subsequent thermal diffusion treatment of Fe-Cr-B cast steel Fe-Cr-B铸钢在热浸渗铝和随后的热扩散处理过程中形成的Cr-Al-B MAB相上各种晶须的生长
IF 4.3 2区 材料科学
Intermetallics Pub Date : 2025-06-23 DOI: 10.1016/j.intermet.2025.108891
Xianman Zhang , Ren Fu , Baichuan Liu , Zicheng Ling
{"title":"Growth of various in whiskers on Cr-Al-B MAB phases formed during hot-dip aluminizing and subsequent thermal diffusion treatment of Fe-Cr-B cast steel","authors":"Xianman Zhang ,&nbsp;Ren Fu ,&nbsp;Baichuan Liu ,&nbsp;Zicheng Ling","doi":"10.1016/j.intermet.2025.108891","DOIUrl":"10.1016/j.intermet.2025.108891","url":null,"abstract":"<div><div>The synthesis of MAB phases and their solid solutions, which were candidates of precursor to prepare the MBenes with promising in energy storage and electrocatalytic applications, were generally complex. Compared with wide growth of whiskers on the MAX phases, the A-site element whiskers growth on the MAB phases were rare. Cr-Al-B MAB phase within the periodic layered structure (PLS) coating could be formed during hot-dip aluminizing (HDA) and subsequent thermal diffusion treatment (TDT) of Fe-Cr-B cast steel. Herein, the interfacial microstructures of the HDA of Fe-Cr-B cast steel in Al alloy melts containing Bi, In and Sn and subsequent TDT, especially the growth of whiskers on the whitened Cr-Al-B MAB phases, were systematically studied. The results demonstrated that, In and its combinations with Bi could partially replace the Al atoms in the Cr-Al-B MAB phase, resulting the both effects that the whitening of the Cr-Al-B MAB phases within the PLS and the spontaneous growth of whiskers with different compositions on them. However, the growth of Bi whisker could be neglected, compared with wide growth of various In whiskers. The shape of γ-In(Sn) rapid spontaneous growth in the vacuum chamber of SEM was complex and was not the prism structure of Sn whisker growth under the vacuum condition, which was related to the compositions of whiskers. This study would further enrich the theory of whisker growth on the MAB/MAX phases.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"185 ","pages":"Article 108891"},"PeriodicalIF":4.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338731","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
Role of Manganese Oxide Nanosheets in Pyrolyzed Carbonaceous Supports for Water Oxidation 氧化锰纳米片在热解碳质水氧化载体中的作用
IF 8.6 2区 材料科学
Chemistry of Materials Pub Date : 2025-06-23 DOI: 10.1021/acs.chemmater.5c00212
André Wark, Thorsten O. Schmidt, Richard W. Haid, Regina M. Kluge, Shinya Suzuki, Zyun Siroma, Egill Skúlason, Aliaksandr S. Bandarenka, Jun Maruyama
{"title":"Role of Manganese Oxide Nanosheets in Pyrolyzed Carbonaceous Supports for Water Oxidation","authors":"André Wark, Thorsten O. Schmidt, Richard W. Haid, Regina M. Kluge, Shinya Suzuki, Zyun Siroma, Egill Skúlason, Aliaksandr S. Bandarenka, Jun Maruyama","doi":"10.1021/acs.chemmater.5c00212","DOIUrl":"https://doi.org/10.1021/acs.chemmater.5c00212","url":null,"abstract":"The oxygen-evolving complex in photosystem II, a manganese-oxide-based cluster, is nature’s solution for water oxidation, while most efficient artificial catalysts consist of costly noble-metal-based oxides. However, tackling the upcoming challenges of the climate crisis requires sustainable electrocatalysts based on affordable and efficient materials. Herein, we extensively probe carbonized iron phthalocyanine without and with deposited manganese-oxide nanosheets as model electrocatalysts mimicking the biological solution. We employed electrochemical and spectroscopic techniques, noise electrochemical scanning tunneling microscopy, and density functional theory calculations to understand their water-splitting performance holistically. Both compound materials show remarkable electrocatalytic activity, outperforming previously investigated systems based on earth-abundant elements. The origin of this enhanced performance is assigned to the metal centers and the edges at the substrate–nanosheet interface, providing the design guidelines to optimize further sustainable and affordable electrocatalysts for water oxidation.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":"642 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144340878","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
Nickel Oxide/Cobalt Phthalocyanine as a Hole Transport Bilayer for Efficient and Stable Inverted Perovskite Solar Cells 镍氧化物/酞菁钴作为高效稳定的倒钙钛矿太阳能电池的空穴传输双层材料
IF 13.3 2区 材料科学
Small Pub Date : 2025-06-23 DOI: 10.1002/smll.202501794
Meiirkhan Beisembekov, Aitbek Aimukhanov, Serzhan Tazhibayev, Dosmukhammed Abeuov, Assylbek Zeinidenov
{"title":"Nickel Oxide/Cobalt Phthalocyanine as a Hole Transport Bilayer for Efficient and Stable Inverted Perovskite Solar Cells","authors":"Meiirkhan Beisembekov, Aitbek Aimukhanov, Serzhan Tazhibayev, Dosmukhammed Abeuov, Assylbek Zeinidenov","doi":"10.1002/smll.202501794","DOIUrl":"https://doi.org/10.1002/smll.202501794","url":null,"abstract":"This study demonstrates that the use of bilayer films based on nickel oxide (NiO<jats:sub>x</jats:sub>;) and cobalt phthalocyanine (CoPc) represents a promising hole transport layer (HTLs) for inverted perovskite solar cells (PSCs). NiO<jats:sub>x</jats:sub>; films are fabricated using the spin‐coating method from a sol–gel solution. Films (CoPc<jats:sub>evap</jats:sub>) and nanowires (CoPc<jats:sub>nws</jats:sub>) on the NiO<jats:sub>x</jats:sub>; surface are produced by thermal sputtering and physical gradient‐temperature vapor deposition. It is demonstrated that PSCs with a NiO<jats:sub>x</jats:sub>; layer exhibit a power conversion efficiency (PCE) of only 18,1%. The incorporation of a CoPc<jats:sub>evap</jats:sub> intermediate layer between NiO<jats:sub>x</jats:sub>; and the perovskite increases the PCE to 19.1%. The highest PCE, reaching 20.7%, is achieved with a bilayer HTLs based on NiO<jats:sub>x</jats:sub>;/CoPc<jats:sub>nws</jats:sub>. Analysis of the PSC impedance spectra shows that the CoPc<jats:sub>nws</jats:sub> intermediate layer reduces the HTLs resistance and increases the recombination resistance at the perovskite/HTLs interface, which extends the effective lifetime of charge carriers. The stability of NiO<jats:sub>x</jats:sub>;‐based PSCs is 48%, while PSCs with bilayer HTLs based on NiO<jats:sub>x</jats:sub>;/CoPc<jats:sub>nws</jats:sub> and NiO<jats:sub>x</jats:sub>;/CoPc<jats:sub>evap</jats:sub> exhibits higher stability of 71% and 90% over 600 hours. The results demonstrated that solar cells based on NiO<jats:sub>x</jats:sub>;/CoPc inhibit the perovskite degradation process and reduce charge recombination, thereby improving the performance and stability of the inverted PSCs.","PeriodicalId":228,"journal":{"name":"Small","volume":"15 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341037","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
Surface Fluorination Shielding of Sulfide Solid Electrolytes for Enhanced Electrochemical Stability in All‐Solid‐State Batteries 硫化物固体电解质的表面氟化屏蔽增强全固态电池的电化学稳定性
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-06-23 DOI: 10.1002/adma.202416816
Kyu Tae Kim, Jae‐Seung Kim, Ki Heon Baeck, Jong Seok Kim, Juhyoun Park, Seongil Bong, Young Joon Park, Yong Bae Song, Changhyun Park, Soon‐Jae Jung, Hyun‐Wook Lee, Kyulin Lee, Jay Hyok Song, Soonrewl Lee, Dong‐Hwa Seo, Yoon Seok Jung
{"title":"Surface Fluorination Shielding of Sulfide Solid Electrolytes for Enhanced Electrochemical Stability in All‐Solid‐State Batteries","authors":"Kyu Tae Kim, Jae‐Seung Kim, Ki Heon Baeck, Jong Seok Kim, Juhyoun Park, Seongil Bong, Young Joon Park, Yong Bae Song, Changhyun Park, Soon‐Jae Jung, Hyun‐Wook Lee, Kyulin Lee, Jay Hyok Song, Soonrewl Lee, Dong‐Hwa Seo, Yoon Seok Jung","doi":"10.1002/adma.202416816","DOIUrl":"https://doi.org/10.1002/adma.202416816","url":null,"abstract":"Despite their high Li<jats:sup>+</jats:sup> conductivity and deformability, sulfide solid electrolytes suffer from limited electrochemical stability, which prevents all‐solid‐state batteries (ASSBs) from reaching their full performance potential. Herein, a facile surface fluorination strategy is presented for Li<jats:sub>6</jats:sub>PS<jats:sub>5</jats:sub>Cl using XeF<jats:sub>2</jats:sub> as a solid‐state fluorinating agent, enabling a scalable dry process at moderate temperatures. An ≈37.3 nm‐thick uniform fluorinated layer is coated on an Li<jats:sub>6</jats:sub>PS<jats:sub>5</jats:sub>Cl surface, preserving 82.8% of the initial Li<jats:sup>+</jats:sup> conductivity (from 2.9 × 10⁻<jats:sup>3</jats:sup> only to 2.4 × 10⁻<jats:sup>3</jats:sup> S cm⁻¹ at 30 °C). The underlying fluorination mechanism, deduced through systematic investigations using X‐ray photoelectron spectroscopy, X‐ray Rietveld refinement, nuclear magnetic resonance, and density functional theory calculations, involves the formation of surface oxidative byproducts and F substitution within the lattice. When applied to LiNi<jats:sub>0.90</jats:sub>Co<jats:sub>0.05</jats:sub>Mn<jats:sub>0.05</jats:sub>O<jats:sub>2</jats:sub> electrodes in LiNi<jats:sub>0.90</jats:sub>Co<jats:sub>0.05</jats:sub>Mn<jats:sub>0.05</jats:sub>O<jats:sub>2</jats:sub>||(Li‐In) half cells at 30 °C, the fluorinated Li<jats:sub>6</jats:sub>PS<jats:sub>5</jats:sub>Cl substantially improves the electrochemical performance, delivering superior discharge capacities (e.g., 186.9 vs 173.6 mA h g<jats:sup>−1</jats:sup> at 0.33C), capacity retention, and safety characteristics compared to unmodified Li<jats:sub>6</jats:sub>PS<jats:sub>5</jats:sub>Cl. This enhancement is attributed to the formation of a robust fluorinated cathode electrolyte interphase that mitigates Li<jats:sub>6</jats:sub>PS<jats:sub>5</jats:sub>Cl oxidation. Finally, the stable operation of a pouch‐type LiNi<jats:sub>0.90</jats:sub>Co<jats:sub>0.05</jats:sub>Mn<jats:sub>0.05</jats:sub>O<jats:sub>2</jats:sub>||Li ASSB is demonstrated, highlighting the scalability of the proposed approach.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"91 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341069","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
Nickel Hydroxide Catalyzed Bias‐free Photoelectrochemical NH3 Production via Nitrate Reduction 硝酸还原氧化镍催化无偏置光电化学NH3生产
IF 29.4 1区 材料科学
Advanced Materials Pub Date : 2025-06-23 DOI: 10.1002/adma.202506567
Wonjoo Jin, Hyunju Go, Juyeon Jeong, Jeonghwan Park, Ahmad Tayyebi, Je Min Yu, Seungchul Kim, Keunsu Choi, Ji‐Wook Jang, Kwanyong Seo
{"title":"Nickel Hydroxide Catalyzed Bias‐free Photoelectrochemical NH3 Production via Nitrate Reduction","authors":"Wonjoo Jin, Hyunju Go, Juyeon Jeong, Jeonghwan Park, Ahmad Tayyebi, Je Min Yu, Seungchul Kim, Keunsu Choi, Ji‐Wook Jang, Kwanyong Seo","doi":"10.1002/adma.202506567","DOIUrl":"https://doi.org/10.1002/adma.202506567","url":null,"abstract":"The photoelectrochemical nitrate reduction reaction (PEC NO<jats:sub>3</jats:sub>RR) potentially converts nitrate, a major water pollutant, into NH<jats:sub>3</jats:sub>, which is an eco‐friendly, next‐generation energy source. However, achieving high efficiency in the PEC NO<jats:sub>3</jats:sub>RR has been challenging because of the need for high applied voltage and competition with the hydrogen evolution reaction (HER). In this study, a PEC NO<jats:sub>3</jats:sub>RR is successfully implemented that demonstrated a high NH<jats:sub>3</jats:sub> production rate of 2468 µg cm<jats:sup>−2</jats:sup> h<jats:sup>−1</jats:sup> (at −0.1 V vs RHE) using a <jats:italic>c‐</jats:italic>Si photocathode with Ni foil as the catalyst. Conducting the PEC NO<jats:sub>3</jats:sub>RR under alkaline conditions can lead to the self‐activation of the Ni surface with Ni(OH)<jats:sub>2</jats:sub>. Ni(OH)<jats:sub>2</jats:sub> can suppress the competitive HER and facilitate NO<jats:sub>3</jats:sub>RR, enhancing NH<jats:sub>3</jats:sub> production efficiency. Furthermore, a PEC NO<jats:sub>3</jats:sub>RR system is developed that operates without external voltage and achieved bias‐free record‐high solar to NH<jats:sub>3</jats:sub> conversion efficiency of 3.8% and an NH<jats:sub>3</jats:sub> production rate of 554 µg cm<jats:sup>−2</jats:sup> h<jats:sup>−1</jats:sup>.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"45 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341072","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
Molecularly Engineered Quaternized κ‐Carrageenan: a Multifunctional Platform for Atmospheric Water Harvesting, Moisture‐Electricity Generation, and Self‐powered Wearable Sensors 分子工程季铵盐化κ‐卡拉胶:一种用于大气水收集、水分发电和自供电可穿戴传感器的多功能平台
IF 19 1区 材料科学
Advanced Functional Materials Pub Date : 2025-06-23 DOI: 10.1002/adfm.202502668
Na Li, Xiao Yu, Da‐Peng Yang, Jintao He
{"title":"Molecularly Engineered Quaternized κ‐Carrageenan: a Multifunctional Platform for Atmospheric Water Harvesting, Moisture‐Electricity Generation, and Self‐powered Wearable Sensors","authors":"Na Li, Xiao Yu, Da‐Peng Yang, Jintao He","doi":"10.1002/adfm.202502668","DOIUrl":"https://doi.org/10.1002/adfm.202502668","url":null,"abstract":"The pursuit of sustainability in the energy and environmental fields, coupled with the innovation in intelligent wearable sensing technologies, demands high‐performance materials with advanced functionalities. Molecular design has emerged as a cornerstone for optimizing material properties and achieving multifunctional integration. Natural carrageenan, a green substrate material known for its biocompatibility and renewability, faces challenges due to its limited processability and mechanical robustness. In this study, zwitterionic groups are introduced through molecular design to regulate intermolecular interactions, significantly lowering the sol–gel transition temperature, thus enabling superior processability and enhanced mechanical properties. This modification strategy enables efficient salt ion immobilization, endowing the material with outstanding atmospheric water harvesting (AWH) capabilities (2.1 g g<jats:sup>−</jats:sup>¹) and stable moisture‐electricity generation (MEG) performance (0.9 V of <jats:italic>V</jats:italic><jats:sub>oc</jats:sub>). Leveraging these advancements, a self‐powered smart sensor is developed, capable of real‐time monitoring of respiratory states, pressure sensing, and rapid response to noncontact actions. This work provides an integrated material design framework that facilitates innovation in green energy and personalized health monitoring technologies.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"18 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341079","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
Reduction of silver content in Electrically Conductive Adhesives for low-temperature interconnection of solar cells 降低太阳能电池低温互连用导电胶粘剂中的银含量
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2025-06-23 DOI: 10.1016/j.solmat.2025.113762
Nathalie Ronayette , Olivier Poncelet , Sonia Sousa Nobre , Sandrine Barthélémy , Daniel Bellet , Rémi Monna
{"title":"Reduction of silver content in Electrically Conductive Adhesives for low-temperature interconnection of solar cells","authors":"Nathalie Ronayette ,&nbsp;Olivier Poncelet ,&nbsp;Sonia Sousa Nobre ,&nbsp;Sandrine Barthélémy ,&nbsp;Daniel Bellet ,&nbsp;Rémi Monna","doi":"10.1016/j.solmat.2025.113762","DOIUrl":"10.1016/j.solmat.2025.113762","url":null,"abstract":"<div><div>The interconnection of solar cells with electrically conductive adhesives (ECAs) is a promising lead-free, low-temperature, low-stress interconnection technology, with proven reliability in ageing tests. However, ECAs contain large fractions of silver particles, contributing to a high consumption of silver in the photovoltaic industry. At the same time, most of the ECAs used are commercial products with poorly known composition, and appropriate methods to characterise their fillers are lacking.</div><div>In this work, we investigated the link between ECAs’ resistivity and the content and morphology of their fillers. Chemical dosages and observations of cured ECAs with electronic microscopy were supplemented with the development of a new method allowing to wash away the resin of ECAs and observe the particles themselves. This last method allows simultaneously a precise determination of the particles’ morphology and an overall reliable estimation of ECAs’ silver content, which is not possible with other reported means.</div><div>We showed that some ECAs can contain silver particles with tortuous shapes, while others contain optimised particles with flaky or core–shell morphologies, often under the form of a mix of particles with various sizes and shapes. Resistivities down to (8.18 ± 4.91) × 10<sup>-5</sup> <!-->Ω<!--> <!-->cm were measured for ECAs containing more than 50<!--> <!-->wt% silver. Conductive behaviours can be obtained along with reduced silver contents as low as (25.6 ± 1.3)<!--> <!-->wt% when optimised fillers are used to make ECAs.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"292 ","pages":"Article 113762"},"PeriodicalIF":6.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338726","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
Accurate prediction of band gap of two-dimensional monolayer materials via transfer learning 基于迁移学习的二维单层材料带隙的精确预测
IF 11.5 2区 材料科学
Materials Today Physics Pub Date : 2025-06-23 DOI: 10.1016/j.mtphys.2025.101774
Jingfeng Wang, Zihe Li, Mengke Li, Wenyan Jiao, Yufeng Luo, Huijun Liu, Ying Fang
{"title":"Accurate prediction of band gap of two-dimensional monolayer materials via transfer learning","authors":"Jingfeng Wang, Zihe Li, Mengke Li, Wenyan Jiao, Yufeng Luo, Huijun Liu, Ying Fang","doi":"10.1016/j.mtphys.2025.101774","DOIUrl":"https://doi.org/10.1016/j.mtphys.2025.101774","url":null,"abstract":"Band gap is a crucial factor for the design and discovery of novel functional materials with desired properties. In principle, the band gap can be accurately predicted by using first-principles calculations with quasiparticle self-energy corrections, which is however very time-consuming and thus limited to small systems. In this work, using a pre-trained neural network architecture for the band gap calculated with standard Perdew-Burke-Ernzerhof (PBE) functional, we propose a transfer learning (TL) model to readily and accurately predict the band gap of any monolayer materials, where a small set of GW-calculated gaps is used as training data. Compared with general machine learning algorithms, the TL-driven model shows superior predictive performance, as manifested by improved Pearson correlation coefficient (reduced mean absolute error) from 71% to 97% (0.55 to 0.27) between the real and predicted band gaps. Importantly, the established TL model with good interpretability is leveraged to predict the GW gaps of 2915 monolayer systems that are retrieved from the Computational 2D Materials Database (C2DB) with non-zero PBE gaps, providing a rich sample space for exploring high performance functional materials with suitable band gap.","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"18 1","pages":""},"PeriodicalIF":11.5,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144340927","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
Limantrafin‐BODIPY Conjugates Reduce Stemness and Metastatic Potential via Superoxide Driven Phototherapy in Triple Negative Breast Cancer Limantrafin - BODIPY偶联物通过超氧化物驱动光疗降低三阴性乳腺癌的干性和转移潜力
IF 13.3 2区 材料科学
Small Pub Date : 2025-06-23 DOI: 10.1002/smll.202505316
Shilpendu Ghosh, Soumya Paul, Sayar Ghosh, Sujato Mukherjee, Priyadarsi De, Rahul Das, Arindam Mukherjee
{"title":"Limantrafin‐BODIPY Conjugates Reduce Stemness and Metastatic Potential via Superoxide Driven Phototherapy in Triple Negative Breast Cancer","authors":"Shilpendu Ghosh, Soumya Paul, Sayar Ghosh, Sujato Mukherjee, Priyadarsi De, Rahul Das, Arindam Mukherjee","doi":"10.1002/smll.202505316","DOIUrl":"https://doi.org/10.1002/smll.202505316","url":null,"abstract":"Type‐I photosensitizers are advantageous for treating hypoxic tumors compared to singlet oxygen (<jats:sup>1</jats:sup>O<jats:sub>2</jats:sub>)‐based photodynamic therapy (PDT) agents. However, efficient and selective Type‐I reactive oxygen species (ROS) generators remain scarce. Here, Limantrafin (Notch1 transcription inhibitor) conjugated BODIPY photosensitizer is reported that selectively produces superoxide radicals (O₂•⁻) upon green light irradiation and exhibits a significantly higher phototherapeutic index (PI) than its structural analog. Theoretical studies and delayed photoluminescence measurements indicate that efficient intersystem crossing from the singlet excited state (S₁) to an intermediate triplet (T₂), followed by relaxation to a long‐lived triplet state (T₁), may facilitate effective electron transfer to molecular oxygen. In triple‐negative breast cancer (TNBC) cells (MDA‐MB‐231), the lead compound shows significantly high PI (&gt;3700) by low‐intensity green light irradiation. Furthermore, encapsulation in glycopolymer‐based nanoparticles enhances cancer cell selectivity and therapeutic efficacy. Interestingly, there is also a reduction in multiple stemness‐associated gene expression and downregulation of Cluster of Differentiation 44 (CD44) and Intercellular Adhesion Molecule 1 (ICAM‐1/CD54) surface protein markers that promote stemness and immune evasion in TNBC. This dual action may impair tumor aggressiveness, recurrence, and promote immunogenic cell death. The findings highlight that the conjugation of the Notch1 inhibitor, Limantrafin, with BODIPY widens the horizon of Type‐I photosensitizers to design next‐generation PDT agents.","PeriodicalId":228,"journal":{"name":"Small","volume":"19 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341031","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}
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