Advanced Materials最新文献_第8页

Alternating Edge- and Face-Sharing Octahedra with Partial Super-Exchange Enabling High-Voltage Layered Cathodes 交替边缘和面共享八面体与部分超级交换使能高压层状阴极

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-18 DOI: 10.1002/adma.72851

Qin Wang, Weibo Hua, Xinyue Zhai, Jilu Zhang, LingLing Yao, Xibang Chen, Jiao Li, Yanan Chen, Xiao Ouyang, Jing Chen, Bin Liao, Jingyi Qiu, Leidang Zhou, Xiaodong Guo, Xiaoping Ouyang

Traditional O3-type layered oxides with edge-sharing (ES) octahedra suffer from structural instability under high-voltage operation. To address this, we propose a stable edge-sharing coplanar (ESC) O2-type layered structure. In this structure, Li–O octahedra share edges on one side and faces on the other with Co–O octahedra. This ESC-configuration effectively suppresses Co migration and enhances intrinsic structural stability. Furthermore, the 180°Ni–O–TM (TM = paramagnetic transition metal) super-exchange interactions along the edge-sharing directions are introduced to improve high-voltage cycling stability. With an optimal amount of Ni, the unit-cell volume expands, reducing the activation energy for Li-ion diffusion. As a result, the modified ESC-cathode delivers a high discharge capacity of 247 mAh g⁻¹ and a capacity retention of 79% at 1 C after 100 cycles between 3.0 and 4.65 V, far exceeding that of conventional edge-sharing LiCoO₂ (210 mAh g⁻¹, 26%). Interestingly, unlike in conventional edge-sharing layered cathodes, where Ni contributes directly to capacity, increasing Ni content in ESC cathodes leads to a decrease in capacity because additional Ni ions enter the Li layer and obstruct Li-ion diffusion pathways. Overall, this work presents an effective strategy for regulating the local coordination environment of layered oxide cathodes to achieve high performance.

传统的共边八面体o3型层状氧化物在高压下存在结构不稳定的问题。为了解决这个问题，我们提出了一种稳定的边共享共面（ESC） o2型层状结构。在该结构中，Li-O八面体与Co-O八面体在一侧共享边，在另一侧共享面。这种esc结构有效地抑制了Co的迁移，提高了结构的内在稳定性。此外，在共边方向引入180°Ni-O-TM （TM =顺磁过渡金属）超交换作用，提高了高压循环稳定性。当Ni含量达到最佳时，电池体积增大，降低了锂离子扩散的活化能。结果表明，改性后的esc -阴极在3.0 ~ 4.65 V之间循环100次后，放电容量达到247 mAh g−1，在1℃下的容量保持率为79%，远远超过传统的边共享LiCoO2 （210 mAh g−1,26%）。有趣的是，在传统的沿共享层状阴极中，Ni直接对容量有贡献，而ESC阴极中Ni含量的增加会导致容量的降低，因为额外的Ni离子进入Li层并阻碍Li离子的扩散途径。总的来说，这项工作提出了一种有效的策略来调节层状氧化物阴极的局部配位环境，以实现高性能。

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引用次数: 0

Constructing Tunable Hierarchical Nanosheets and Their Application in Polymer Reinforcement 可调层次化纳米片的构建及其在聚合物增强中的应用

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-18 DOI: 10.1002/adma.72843

Yueyao Wang, Yuxiang Zhang, Shiqing Jia, Chun Feng, Xinfeng Tao, Binbin Xu, Shaoliang Lin

Nanosheet materials are tremendously attractive for their specific planar architecture and large surface area. However, fabricating nanosheet structures with morphological and functional control across spatial domains from the 2D to 3D scale remains a great challenge. Herein, we report a facile one-pot strategy for creating nanosheets with tunable geometries and multilevel hierarchies based on a liquid crystalline (LC) block copolymer. By finely tuning the assembly conditions, a variety of nanosheet morphologies were achieved, including multilayer leaf-like nanosheets (MLNs), multilayer rectangular nanosheets (MRNs), 3D stacked leaf-like nanosheets (SLNs), 3D stacked rectangular nanosheets (SRNs), and stacked flower-like nanosheets (SFNs). The formation of diverse nanosheet structures relies on LC ordering and the nucleation and growth tendencies of the copolymer. Particularly, we demonstrate that these hierarchical nanosheets are promising additives for polymer reinforcement. By mimicking biological reinforcing principles, SLNs integrating a large surface area with layered and anisotropic characteristics exhibit efficient toughening and strengthening effects through effective energy dissipation and crack deflection. This study not only offers a facile strategy for the design of nanosheet materials with precise control of their morphologies and dimensions but also provides new insight into using hierarchical nanosheet structures to achieve advanced polymer performance.

纳米片材料以其特殊的平面结构和较大的表面积具有极大的吸引力。然而，制造具有形态和功能控制的纳米片结构在从二维到三维的空间域仍然是一个巨大的挑战。在此，我们报告了一种简单的一锅策略，用于基于液晶（LC）嵌段共聚物创建具有可调几何形状和多层层次结构的纳米片。通过对装配条件的精细调整，可以实现多种纳米片的形貌，包括多层叶状纳米片（MLNs）、多层矩形纳米片（MRNs）、三维堆叠叶状纳米片（SLNs）、三维堆叠矩形纳米片（SRNs）和堆叠花状纳米片（SFNs）。不同纳米片结构的形成依赖于LC的有序和共聚物的成核和生长趋势。特别是，我们证明了这些分层纳米片是聚合物增强的有前途的添加剂。通过模拟生物强化原理，sln具有大表面积、分层和各向异性的特性，通过有效的能量耗散和裂缝挠曲表现出有效的增韧和强化效果。这项研究不仅为纳米片材料的设计提供了一种简单的策略，可以精确控制其形态和尺寸，而且为使用分层纳米片结构实现先进聚合物性能提供了新的见解。

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引用次数: 0

Reconfigurable Virtual Reality Interaction Interface Based on Encoded Mechanical Array. 基于编码机械阵列的可重构虚拟现实交互界面。

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-18 DOI: 10.1002/adma.202516232

Taiqi Hu,Taisong Pan,Liying Zhang,Siqi Chen,Yang Xiao,Fan Li,Ruiyuan Zhang,Xiao Huang,Guang Yao,Zhenlong Huang,Mei Bi,Min Gao,Yuan Lin

Virtual reality (VR) interaction interface plays a critical role in bridging biomechanical signatures between physical world and cyberspace. However, existing stretchable strain sensors for VR gesture recognition face an inherent trade-off between sensitivity and operating range, thereby significantly limiting their applicability across diverse metaverse scenarios. Here, we present a dynamic reconfiguration strategy based on an encoded mechanical array (EMA) to enable in-field and programmable tuning of sensitivity and operating range for stretchable strain sensors in VR applications. The interlocked liquid metal units in EMA, which are inspired by mortise-and-tenon design, achieve reversible fracture-healing cycles under external magnetic fields and mechanical stimuli, enabling programmable localized strain tunability (up to 71%) in EMA with binary coding. With the integration of EMA, the stretchable strain sensor is capable of switching between multiple operational modes across high-precision detection (∼610% sensitivity enhancement) and wide-range monitoring (∼220% range extension). By implementing the EMA-based stretchable strain sensor array in the creation of a reconfigurable VR interaction interface, we achieve scenario-adaptive hand motion tracking in a VR medical training platform for orthopedic and neurosurgical surgery simulations.

虚拟现实交互界面在连接物理世界和网络空间之间的生物力学特征方面起着至关重要的作用。然而，现有的用于VR手势识别的可拉伸应变传感器在灵敏度和工作范围之间面临着固有的权衡，从而大大限制了它们在各种虚拟场景中的适用性。在这里，我们提出了一种基于编码机械阵列（EMA）的动态重新配置策略，以实现VR应用中可拉伸应变传感器的灵敏度和工作范围的现场和可编程调谐。EMA中的互锁液态金属单元受到榫头设计的启发，在外部磁场和机械刺激下实现可逆的骨折愈合周期，通过二进制编码实现可编程的局部应变可调性（高达71%）。随着EMA的集成，可拉伸应变传感器能够在高精度检测（~ 610%灵敏度增强）和宽范围监测（~ 220%范围扩展）的多种工作模式之间切换。通过实现基于ema的可拉伸应变传感器阵列，创建可重构的VR交互界面，我们在骨科和神经外科手术模拟的VR医学培训平台中实现了场景自适应的手部运动跟踪。

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引用次数: 0

In-situ p-Doping of Nanometer Tellurium-based Oxide for Room-Temperature CMOS Circuits. 室温CMOS电路中纳米碲基氧化物的原位p掺杂。

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-17 DOI: 10.1002/adma.72813

Mengfei He,Hamin Choi,Zhikai Le,Xiaomin Yang,Yanlin Huang,Youjin Reo,Sai Bai,Mingyang Wang,Huihui Zhu,Yong-Young Noh,Ao Liu

The development of high-performance p-type oxide semiconductors is crucial for scalable CMOS technologies, yet conventional oxides remain intrinsically difficult to p-dope owing to the localized nature of oxygen orbitals and strong defect compensation. Here, we report a reaction-metal-mediated redox strategy that exploits the deposition environment for intrinsic in situ p-type doping of tellurium oxide. Mo-assisted reduction produces nanometer Te-based oxide films with tunable Te nanochannels, which form percolative pathways that markedly enhance hole transport. Remarkably, films deposited at room temperature (RT) achieve mobilities above 10 cm2 V-1 s-1 and carrier densities tunable over more than five orders of magnitude. Co-integration with n-type oxide transistors enables the fabrication of all-oxide CMOS circuits entirely at RT with robust logic functionality. This intrinsically regulated doping pathway provides a generalizable route to overcome long-standing bottlenecks in p-type oxides and advance oxide semiconductors toward large-area, flexible CMOS electronics.

高性能p型氧化物半导体的发展对于可扩展的CMOS技术至关重要，但由于氧轨道的局域性和强缺陷补偿，传统氧化物仍然难以p掺杂。在这里，我们报道了一种反应-金属介导的氧化还原策略，该策略利用沉积环境来原位掺杂p型氧化碲。mo辅助还原产生具有可调Te纳米通道的纳米Te基氧化物膜，其形成的渗透途径显着增强了空穴传输。值得注意的是，在室温（RT）下沉积的薄膜实现了超过10 cm2 V-1 s-1的迁移率，载流子密度可调超过5个数量级。与n型氧化物晶体管的协整使得全氧化物CMOS电路完全在RT下制造，具有强大的逻辑功能。这种内在调控的掺杂途径为克服p型氧化物的长期瓶颈提供了一条可推广的途径，并将氧化物半导体推向大面积、柔性的CMOS电子产品。

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引用次数: 0

Creating Nanoknot-Like Domains for Robust Artificial Spider Silk Toward High Twistocaloric Performance 为高扭热性能的人造蜘蛛丝制备纳米结结构域

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-17 DOI: 10.1002/adma.202516934

Jiatian Li, Guangkai Mei, Shaoli Fang, Xiao Liu, Songen Liu, Yasi Liu, Zhaoyu Yang, Xuanliang Han, Meilin Wang, Yicheng Xiao, Wang Chang, Wenjin Guo, Weiqiang Zhao, Guanghao Zhang, Ziqian Zhang, Chao Li, Mengmeng Zhang, Jie Bai, Xiang Zhou, Ray H. Baughman, Zunfeng Liu

High-efficiency refrigeration materials with long cycle lifetimes are essential for reducing energy consumption in conventional cooling systems. Twistocaloric cooling, which harnesses nonlinear torsional stress, offers a promising pathway to enhanced cooling efficiency. However, a general design strategy for polymer-based twistocaloric materials that combine high efficiency and long cycle life remains elusive. Here, we report spider silk-inspired polybiurea elastomer fibers that exhibit exceptional mechanical properties and twistocaloric cooling performance. The material's architecture features nanoknot-like domains formed via multiple hydrogen bonds and π–π interactions in the hard segments, which knot together the soft segments to provide high mechanical stability and substantial entropy changes. The polybiurea fibers with nanoknot-like domains achieved an extraordinary combination of breaking strength of 316.5 MPa and toughness of 523.4 MJ m⁻³. This engineered deformable knotted structure enables a maximum cooling temperature drop of −17.1 K (by twisting and stretching), a maximum Carnot efficiency of 89.7%, and operational durability up to 120 000 mechanical fatigue life cycles. We further demonstrate two out-of-phase operated twistocaloric devices designed to recover input mechanical energy, thereby enhancing overall system efficiency. This work presents a robust materials strategy for advancing high-performance polymeric refrigeration materials and systems.

具有长循环寿命的高效制冷材料对于降低传统制冷系统的能耗至关重要。扭转热冷却，利用非线性扭转应力，提供了一个有希望的途径，以提高冷却效率。然而，结合高效率和长循环寿命的聚合物基扭转热材料的一般设计策略仍然难以捉摸。在这里，我们报告了蜘蛛丝启发的聚脲弹性体纤维，表现出卓越的机械性能和扭转热冷却性能。该材料的结构特点是通过硬段中的多个氢键和π -π相互作用形成纳米结状结构域，这些结构域将软段结在一起，以提供高机械稳定性和大量熵变化。具有纳米结结构域的聚脲纤维的断裂强度达到316.5 MPa，韧性达到523.4 MJ m−3。这种设计的可变形结状结构使冷却温度降至- 17.1 K（通过扭曲和拉伸），最大卡诺效率为89.7%，运行耐久性高达12万机械疲劳寿命周期。我们进一步展示了两种反相操作的扭热装置，旨在回收输入的机械能，从而提高整体系统效率。这项工作提出了一个强大的材料战略推进高性能聚合物制冷材料和系统。

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引用次数: 0

Single-Atom Photocatalyst as Floatable Artificial Leaf for Upcycling Oceanic Plastic Waste 单原子光催化剂在海洋塑料垃圾升级利用中的可浮性人造叶研究

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-17 DOI: 10.1002/adma.202519931

Amin Talebian-Kiakalaieh, Xin Xu, Wenzhong Ji, Yun Liu, Bingquan Xia, Jingrun Ran, Shi-Zhang Qiao

Over ∼8 billion tons of plastic have been produced to date, with ∼80% of them ended up in landfills/oceans. Among them, polypropylene (PP) possesses the lowest global recycling rate (< 1%). To resolve this, Ru single atoms (SAs) loaded photocatalysts (ZnIn₂S₄/Ru SAs) in the forms of powder/floatable artificial leaf (AL) were prepared for direct conversion of raw PP plastic into valuable chemicals. The optimized photocatalyst exhibits exceptional performance with a total formic/acetic acid production of 1022.5 µmol g⁻¹. In situ X-ray photoelectron spectroscopy, in situ atomic force microscopy-kelvin probe force microscopy, and in situ electron paramagnetic resonance (EPR) reveal efficient electron extraction from ZnIn₂S₄ nanosheets to Ru SAs, with subsequent electron capture by O₂ molecules in air. Additionally, in situ transient-state photoluminescence spectroscopy, transient photovoltage measurement, and in situ EPR unveil the electrolyte-assisted polarization (induced by cations/anions in seawater) significantly enhancing charge separation/transfer. Finally, in situ EPR, in situ infrared (IR) spectroscopy, and quenching experiments corroborate the pivotal roles of reactive oxygen species (·O₂⁻/·OH) for upcycling PP into valuable chemicals. These results highlight the transformative potential of floatable AL concept for converting plastic waste into high-value chemicals, offering a sustainable solution to plastic contamination.

到目前为止，已经生产了超过80亿吨的塑料，其中80%最终进入了垃圾填埋场/海洋。其中，聚丙烯（PP）的全球回收率最低（1%）。为了解决这一问题，制备了以粉末/可浮性人造叶（AL）形式负载Ru单原子（SAs）光催化剂（ZnIn2S4/Ru SAs），用于将PP原料塑料直接转化为有价化学品。优化后的光催化剂表现出优异的性能，总甲酸/乙酸产量为1022.5µmol g−1。原位x射线光电子能谱、原位原子力显微镜-开尔文探针力显微镜和原位电子顺磁共振（EPR）揭示了从ZnIn2S4纳米片到Ru SAs的有效电子提取，随后被空气中的O2分子捕获。此外，原位瞬态光致发光光谱、瞬态光电压测量和原位EPR揭示了电解质辅助极化（由海水中的阳离子/阴离子诱导）显著增强电荷分离/转移。最后，原位EPR，原位红外（IR）光谱和淬火实验证实了活性氧（·O2−/·OH）在PP升级为有价值化学品中的关键作用。这些结果突出了可漂浮AL概念的变革潜力，将塑料废物转化为高价值化学品，为塑料污染提供了可持续的解决方案。

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引用次数: 0

Decoding the Electrodeposition of Zinc Anode With Dynamic Mixed Nucleation Model for Rechargeable Batteries. 用动态混合成核模型解码可充电电池锌阳极电沉积。

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-17 DOI: 10.1002/adma.72783

Shunyu Yao,Yang Zhang,Huichao Lu,Jiqiong Liu,Xirui Kong,Ben Chong,Liangyu Wang,Yi Li,Hong Zhu,Jun Yang,Yanna NuLi,Jiulin Wang

Dendrites have posed a significant threat to the cycling life of zinc (Zn) metal batteries in organic electrolyte. The deposition behavior of Zn is largely influenced by the kinetics of electrodeposition, a better understanding of which is crucial but often neglected. In this study, we provide a more refined classification of the electrodeposition and establish a novel mixed nucleation model. By fitting the chronoamperometric curves of the anode under different bias potentials based on mixed nucleation model, the dynamic evolution of the anode nucleation mode over time can be clearly classified. Also, the mixed nucleation model fitting proved that the introduction of antimony (Sb) transformed the electrochemical kinetics of the Zn anode, increasing the nucleation site density and shifting zinc deposition from mostly 3D instantaneous nucleation to uniform progressive nucleation. Consequently, the alloyed Zn exhibits a quasi-2D deposition with predominantly exposed (002) nanocrystalline crystallographic plane. The flat and regular deposition enables excellent performance: steady cycling over 2600 h life at 5 mA cm-2, 5 mAh cm-2 in Zn||Zn symmetric cells; dendrite-free zinc plating/stripping at 99.94% coulombic efficiency in SS||Zn asymmetric cell. The mixed nucleation model may provide new insights for the electrodeposition behavior of metal anodes.

枝晶对锌金属电池在有机电解液中的循环寿命构成了严重威胁。锌的沉积行为在很大程度上受电沉积动力学的影响，对电沉积动力学的更好理解是至关重要的，但往往被忽视。在这项研究中，我们提供了一个更精细的电沉积分类，并建立了一个新的混合成核模型。在混合成核模型的基础上，拟合不同偏压电位下阳极的时间电流曲线，可以清晰地划分阳极成核模式随时间的动态演变。同时，混合成核模型拟合证明锑（Sb）的引入改变了锌阳极的电化学动力学，增加了成核位密度，使锌沉积从主要为三维瞬时成核转变为均匀渐进成核。因此，合金Zn呈现出准二维沉积，主要暴露（002）纳米晶晶体平面。平坦和规则的沉积实现了卓越的性能：在5毫安cm-2, 5毫安cm-2 Zn||Zn对称电池中稳定循环超过2600小时的寿命；在SS||锌不对称电池中以99.94%的库仑效率进行无枝晶镀锌/剥离。混合成核模型为研究金属阳极的电沉积行为提供了新的思路。

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引用次数: 0

Electric-Current-Assisted Nucleation of Zero-Field Hopfion Rings 零场跳跃环的电流辅助成核

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-17 DOI: 10.1002/adma.202523417

Xiaowen Chen, Dongsheng Song, Filipp N. Rybakov, Nikolai S. Kiselev, Long Li, Wen Shi, Rui Wu, Xuewen Fu, Olle Eriksson, Stefan Blügel, Rafal E. Dunin-Borkowski, Haifeng Du, Fengshan Zheng

Magnetic hopfions are 3D topological solitons – knotted, vortex-like spin configurations. In chiral magnets, hopfions can appear as isolated structures or they can be linked to skyrmion strings. Previous studies employed a sophisticated protocol and a special sample geometry to nucleate such hopfions linked to one or a few skyrmion strings. Here, we introduce an electric-current-assisted nucleation protocol that is simple and independent of the sample shape and size. The resulting hopfions exhibit extraordinary stability in the presence of both positive and negative magnetic fields, in perfect agreement with micromagnetic simulations. We also present a comprehensive framework for classifying hopfions, skyrmions, and merons by deriving the corresponding homotopy group.

磁跳子是三维拓扑孤子——打结的、旋涡状的自旋构型。在手性磁体中，hopon可以表现为孤立的结构，也可以与skyrmion弦相连。以前的研究采用了一种复杂的方案和一种特殊的样品几何形状来形成这种与一个或几个斯基米子弦相连的希望。在这里，我们介绍了一种简单且与样品形状和尺寸无关的电流辅助成核方案。由此产生的hopfons在正磁场和负磁场的存在下都表现出非凡的稳定性，与微磁模拟完全一致。通过推导相应的同伦群，我们也给出了一个分类hopons、skyrmions和merons的综合框架。

引用次数: 0

Dielectric and Gate Metal Engineering for Threshold Voltage Modulation in Enhancement Mode Monolayer MoS₂ Field Effect Transistors. 增强模式MoS2单层场效应晶体管中阈值电压调制的介电和栅极金属工程。

IF 26.8 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-17 DOI: 10.1002/adma.202523661

Lixin Liu, Han Yan, Leyi Loh, Kamal Kumar Paul, Soumya Sarkar, Deepnarayan Biswas, Tien-Lin Lee, Takashi Taniguchi, Kenji Watanabe, Manish Chhowalla, Yan Wang

Excellent gate electrostatics in field effect transistors (FETs) based on 2D transition metal dichalcogenide (2D TMD) channels can dramatically decrease static power dissipation. Energy-efficient FETs operate in enhancement mode with a small and positive threshold voltage (V_th) for n-type devices. However, most state-of-the-art FETs based on monolayer MoS₂ channel operate in depletion mode with negative V_th due to doping from the underlying dielectric substrate. In this work, we identify key properties of the semiconductor/dielectric interface (MoS₂ on industrially relevant high dielectric constant (k) HfO₂, ZrO₂ and hBN for reference) responsible for realizing enhancement-mode operation of 2D MoS₂ channel FETs. We find that hBN and ZrO₂ dielectric substrates provide low defect interfaces with MoS₂ that enables effective modulation of the V_th using gate metals of different work functions (WFs). We use photoluminescence (PL) and synchrotron X-ray photoelectron spectroscopy (XPS) measurements to investigate doping levels in monolayer MoS₂ on different dielectrics with different WF gate metals. We complement the FET and spectroscopic measurements with capacitance-voltage analysis on dielectrics with varying thicknesses, which confirms that V_th modulation in ZrO₂ devices is correlated with WF of the gate metals - in contrast with HfO₂ devices that exhibit signatures of V_th pinning induced by oxide/interface defect states. Finally, we demonstrate FETs using a 2D MoS₂ channel and a 6 nm of ZrO₂ dielectric, achieving a subthreshold swing of 87 mV dec^-1 and a threshold voltage of 0.1 V. Our results offer insights into the role of dielectric/semiconductor interface in 2D MoS₂ based FETs for realizing enhancement mode FETs and highlight the potential of ZrO₂ as a scalable high-k dielectric.

基于二维过渡金属二硫化物（2D TMD）通道的场效应晶体管（fet）具有优异的栅极静电性能，可以显著降低其静态功耗。对于n型器件，高效节能的fet工作在增强模式下，具有小且正的阈值电压（Vth）。然而，大多数最先进的基于单层MoS2沟道的fet由于底层介电衬底的掺杂而工作在负Vth耗尽模式下。在这项工作中，我们确定了半导体/介电界面（MoS2在工业相关的高介电常数(k) HfO2， ZrO2和hBN上作为参考）的关键特性，负责实现2D MoS2通道场效应管的增强模式操作。我们发现hBN和ZrO2介质衬底与MoS2提供低缺陷接口，可以使用不同功函数（WFs）的栅极金属有效调制Vth。我们使用光致发光（PL）和同步加速器x射线光电子能谱（XPS）测量来研究不同介质和不同WF栅极金属在单层MoS2中的掺杂水平。我们通过对不同厚度介质的电容电压分析来补充FET和光谱测量，证实了ZrO2器件中的Vth调制与栅极金属的WF相关，而HfO2器件则表现出由氧化物/界面缺陷状态引起的Vth钉钉特征。最后，我们演示了使用2D MoS2通道和6 nm ZrO2介质的场效应管，实现了87 mV dec-1的亚阈值摆幅和0.1 V的阈值电压。我们的研究结果揭示了介电/半导体界面在二维MoS2基fet中实现增强模式fet中的作用，并突出了ZrO2作为可扩展高k介电材料的潜力。

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引用次数: 0

De Rerum Natura: How Do Halide Perovskites Self-Heal From Damage? 自然恢复：卤化物钙钛矿如何自愈？

IF 29.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials

Pub Date : 2026-03-17 DOI: 10.1002/adma.202518808

Davide Raffaele Ceratti, Gary Hodes, David Cahen

By actually addressing the title question, we provide a comprehensive and critical review of self-healing (SH) in lead-based halide perovskites (HaPs), a phenomenon with profound implications for the stability of these materials across all applications, from photovoltaics to light emission and radiation detection. We emphasize reasoning as a guide to interpreting the dynamic balance between degradation and recovery when HaPs are exposed to light, heat, mechanical stress, or radiation. We compile and assess what are, in our view, the most relevant, available reports of damage–healing dynamics, distinguishing verified facts and observations from interpretations and unresolved questions. Key topics include damage accumulation, light soaking, and photo-brightening, as well as the mechanistic roles of lattice dynamics, halide migration, redox chemistry, and acid–base equilibria in the disappearance of defects on accessible time scales. Thus, we go beyond a conventional summary by providing a unifying framework to clarify contradictions in the literature and reveal the underlying principles of reversible damage. By consolidating results that are often scattered into a coherent picture, we strive to establish a foundation for predictive models of SH kinetics, while guiding strategies to stabilize devices. We anticipate that this critical synthesis will serve as an authoritative reference for the metal halide perovskite research field.

通过实际解决标题问题，我们对铅基卤化物钙钛矿（HaPs）的自我修复（SH）进行了全面而批判性的回顾，这种现象对这些材料在从光伏到光发射和辐射检测等所有应用中的稳定性具有深远的影响。当HaPs暴露于光、热、机械应力或辐射时，我们强调推理是解释降解和恢复之间动态平衡的指导。我们汇编和评估在我们看来最相关的、可获得的关于损伤愈合动力学的报告，将已证实的事实和观察与解释和未解决的问题区分开来。关键主题包括损伤积累、光浸泡和光增亮，以及晶格动力学、卤化物迁移、氧化还原化学和酸碱平衡在可达时间尺度上缺陷消失中的机制作用。因此，我们超越了传统的总结，通过提供一个统一的框架来澄清文献中的矛盾，并揭示可逆损伤的基本原则。通过将经常分散的结果整合到一个连贯的图像中，我们努力建立SH动力学预测模型的基础，同时指导稳定设备的策略。我们期望这一关键合成将为金属卤化物钙钛矿研究领域提供权威参考。

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引用次数: 0