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Manipulating Crystallization and Deprotonation Reaction through Surface Engineering of ZnO for Bright and Stable Near-Infrared Perovskite LEDs 利用ZnO表面工程控制近红外稳定钙钛矿led的结晶和去质子化反应
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-10-01 DOI: 10.1021/acs.nanolett.6c03636
Pengpeng Teng, Haifeng Zhao, Wenbin Wang, Dongqin Yuan, Xingjiao Feng, Yatao Zou, Xiyu Luo, Zhongcheng Yuan, Tiankai Zhang, Lian Duan, Tao Yu, Chunxiong Bao, Weidong Xu, Jie Yang, Sai Bai, Xiaodong Shen
{"title":"Manipulating Crystallization and Deprotonation Reaction through Surface Engineering of ZnO for Bright and Stable Near-Infrared Perovskite LEDs","authors":"Pengpeng Teng,&nbsp;Haifeng Zhao,&nbsp;Wenbin Wang,&nbsp;Dongqin Yuan,&nbsp;Xingjiao Feng,&nbsp;Yatao Zou,&nbsp;Xiyu Luo,&nbsp;Zhongcheng Yuan,&nbsp;Tiankai Zhang,&nbsp;Lian Duan,&nbsp;Tao Yu,&nbsp;Chunxiong Bao,&nbsp;Weidong Xu,&nbsp;Jie Yang,&nbsp;Sai Bai,&nbsp;Xiaodong Shen","doi":"10.1021/acs.nanolett.6c03636","DOIUrl":"10.1021/acs.nanolett.6c03636","url":null,"abstract":"<p>Perovskitelight-emitting diodes (LEDs) have attracted significantattention owing to their rapidly increasing external quantum efficiencies(EQEs). However, achieving bright and operationally stable perovskiteLEDs remains a great challenge. Here, we reveal that the most commonlyused surface modifier of zinc-oxide (ZnO) electron-transport layer,polyethylenimine ethoxylate (PEIE), inhibits the perovskite nucleationby inducing in situ chemical reactions of perovskite precursor components,forming thermally unstable interfacial species and reducing long-termoperational stability of resultant devices. We develop a surface-engineeringstrategy by using an ether-based polymer modifier to regulate perovskitecrystallization kinetics and simultaneously suppress ZnO-induced deprotonationduring long-term device operation. As a result, the optimized near-infrared(NIR) perovskite LEDs exhibit a maximum EQE of 24% and a peak radianceof 539 W sr<sup>–1</sup> m<sup>–2</sup>, along withsignificantly enhanced operational stability. Furthermore, partialsubstitution of FA with Cs confirms the generality of this strategy,yielding bright NIR devices with an operational half-lifetime of 561h at 20 mA cm<sup>–2</sup>.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13979–13986"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088201","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
Boltzmann Sigmoidal Modulation of Vanadium Doping in Monolayer MoS2 by Potassium Iodide 用碘化钾调制单分子二硫化钼中钒掺杂的玻尔兹曼效应
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-10-05 DOI: 10.1021/acs.nanolett.6c03019
Yuanyuan Qiu, Bin Hua, Zhenping Wang, Fei Hu, Dong Zhang, Yang Lu, Marvin L. Cohen, Alex Zettl, Kecheng Cao, Cong Su, Young Woo Choi, Qingqing Ji
{"title":"Boltzmann Sigmoidal Modulation of Vanadium Doping in Monolayer MoS2 by Potassium Iodide","authors":"Yuanyuan Qiu,&nbsp;Bin Hua,&nbsp;Zhenping Wang,&nbsp;Fei Hu,&nbsp;Dong Zhang,&nbsp;Yang Lu,&nbsp;Marvin L. Cohen,&nbsp;Alex Zettl,&nbsp;Kecheng Cao,&nbsp;Cong Su,&nbsp;Young Woo Choi,&nbsp;Qingqing Ji","doi":"10.1021/acs.nanolett.6c03019","DOIUrl":"10.1021/acs.nanolett.6c03019","url":null,"abstract":"<p>Theatomic thickness of two-dimensional (2D) semiconductorsmakesconventional postgrowth substitutional doping highly challenging.Instead, such atomic substitution can be more effectively achieved <em>in situ</em> through chemical vapor deposition synthesis. However,the mechanistic details governing this growth process have remainedpoorly understood. Using V-doped monolayer MoS<sub>2</sub> as a modelsystem, this work elucidates its growth mechanism and doping tunabilityfacilitated by a potassium iodide (KI) promoter. A Raman spectroscopicprobe, established through correlation with scanning transmissionelectron microscopy, was developed to quantify the V dopant concentrationand distribution uniformity. Systematic growth experiments and detailedcharacterizations revealed that doping saturation levels were significantlybelow the precursor feeding ratio. This saturation phenomenon couldbe modulated by KI dosage following a Boltzmann sigmoid function,indicative of an iodide-activated doping mechanism compatible withthe edge passivation substitution (EPS) model. Our findings advancethe doping theory in low-dimensional systems and provide essentialinsights into achieving controlled heteroatom substitution in 2D semiconductors.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13836–13842"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092230","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
Mechanically Exfoliated Metallic Delafossite PdCoO2 Nanomembranes: Quantum Transport and Electrical Evaluation toward Interconnect Applications 机械剥落金属delafosite PdCoO2纳米膜:面向互连应用的量子传输和电学评价
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-30 DOI: 10.1021/acs.nanolett.6c03008
Chengyu Zhu, Pahuni Jain, Yi Zhang, Junghyun Koo, Weideng Sun, Yaotian Li, Alexander McLeod, Chris Leighton, Gang Qiu
{"title":"Mechanically Exfoliated Metallic Delafossite PdCoO2 Nanomembranes: Quantum Transport and Electrical Evaluation toward Interconnect Applications","authors":"Chengyu Zhu,&nbsp;Pahuni Jain,&nbsp;Yi Zhang,&nbsp;Junghyun Koo,&nbsp;Weideng Sun,&nbsp;Yaotian Li,&nbsp;Alexander McLeod,&nbsp;Chris Leighton,&nbsp;Gang Qiu","doi":"10.1021/acs.nanolett.6c03008","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03008","url":null,"abstract":"<p>Metallic delafossiteoxides have drawn attention fortheir ultralowresistivity and coherent electronic transport. However, mesoscopictransport studies are hindered by the limited access to high-qualitynanoscale devices. Here, we report single-crystalline PdCoO<sub>2</sub> nanomembranes, enabling exploration of quasi-two-dimensional (quasi-2D)transport. Shubnikov-de Haas and angle-dependent <em>h/e</em> magnetoresistance oscillations under different magnetic field directionsare observed at low temperatures, from which the electron effectivemass is extracted. Beyond quantum transport, the electrical performanceof PdCoO<sub>2</sub> toward interconnect applications is evaluated.A nearly thickness-independent room-temperature resistivity is observedfor flakes down to 40 nm thickness. The nanomembranes exhibit a breakdowncurrent density up to 113 MA cm<sup>–2</sup>, with excellentthermal stability and electromigration resistance. These results demonstratethat mechanically exfoliated PdCoO<sub>2</sub> flakes preserve thehigh crystalline and electronic quality of bulk crystals in the quasi-2Dlimit, providing a useful platform for mesoscopic transport studiesand interconnect applications.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13829–13835"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173962","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
Layer Dependent Ferroelectricity and Electromechanically Coupled Polarization in Two-Dimensional 1T′-ReS2 二维1T ' -ReS2中依赖层的铁电性和机电耦合极化
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-30 DOI: 10.1021/acs.nanolett.6c02868
Zhengyue Li, Jinfeng Yang, Yinfei Xie, Yang He, Xiaonan Wang, Bo Zou, Bingxuan Zhu, Zhongqi Ren, Chu Xiao, Yangyang Si, Yuxuan Yang, Kangjin Zhou, Jingkai Qin, Chengyan Xu, Hao Tian, Haijun Wu, Huarui Sun
{"title":"Layer Dependent Ferroelectricity and Electromechanically Coupled Polarization in Two-Dimensional 1T′-ReS2","authors":"Zhengyue Li,&nbsp;Jinfeng Yang,&nbsp;Yinfei Xie,&nbsp;Yang He,&nbsp;Xiaonan Wang,&nbsp;Bo Zou,&nbsp;Bingxuan Zhu,&nbsp;Zhongqi Ren,&nbsp;Chu Xiao,&nbsp;Yangyang Si,&nbsp;Yuxuan Yang,&nbsp;Kangjin Zhou,&nbsp;Jingkai Qin,&nbsp;Chengyan Xu,&nbsp;Hao Tian,&nbsp;Haijun Wu,&nbsp;Huarui Sun","doi":"10.1021/acs.nanolett.6c02868","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c02868","url":null,"abstract":"<p>Two-dimensional (2D) van der Waals (vdW) materials withslidingferroelectricity exhibit an enormous potential for next-generationnanodevices. Among these, 1T′-ReS<sub>2</sub> with an ultralowsymmetry stands out as a pivotal candidate. However, the fundamentalscientific mechanism underlying sliding ferroelectricity in 1T′-ReS<sub>2</sub> remains poorly understood due to the complexity of its crystalstructure. By integrating STEM, DFT calculations, and KPFM, this workresolves the correlation between AA/AB stacking and polarization in1T′-ReS<sub>2</sub>. PFM and STEM characterizations furtherreveal that the observed ferroelectric-like PFM signals originatefrom flexoelectric-like wrinkles rather than from intrinsic ferroelectricswitching. Finally, device measurements provide evidence of slidingferroelectricity in even-layer AB-stacked ReS<sub>2</sub> and demonstrateits application potential.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13794–13801"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149174007","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
Broadband Near-FieldImaging of Strong Polariton Couplingin Graphene/CrI3 Heterostructures 石墨烯/CrI3异质结构中强极化耦合的宽带近场成像
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2026-10-14 DOI: 10.1021/acs.nanolett.6c02284
Zijian Zhou,Chun-Chih Tseng,Wenjun Zheng,Heng Wang,Heze Zhao,Christopher C. Homes,G. L. Carr,D. N. Basov,Yinming Shao,Matthew Yankowitz,Mengkun Liu,Lukas Wehmeier
{"title":"Broadband Near-Field\u0000Imaging of Strong Polariton Coupling\u0000in Graphene/CrI3 Heterostructures","authors":"Zijian Zhou,Chun-Chih Tseng,Wenjun Zheng,Heng Wang,Heze Zhao,Christopher C. Homes,G. L. Carr,D. N. Basov,Yinming Shao,Matthew Yankowitz,Mengkun Liu,Lukas Wehmeier","doi":"10.1021/acs.nanolett.6c02284","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c02284","url":null,"abstract":"Abstract Interfacial charge transfer in van der Waals heterostructures provides a powerful, contact-free mechanism to activate two-dimensional plasmons. Chromium iodide (CrI3), a layered ferromagnetic insulator, induces significant doping in adjacent graphene, yet its nanoscale polaritonic response and the optical manifestation of this charge transfer remain unexplored. Here, we report the direct real-space observation of propagating graphene surface plasmon polaritons (SPPs) sustained entirely by spontaneous interfacial charge transfer at the graphene/CrI3 interface. Interestingly, a distinct polaritonic anticrossing near 214 cm–1 (6.4 THz) between the charge-transfer-induced graphene SPP and the CrI3 phonon is identified, suggesting this hybrid system lies within the strong-coupling regime. Our work is enabled by the recent advances in broadband synchrotron near-field nanospectroscopy and suggests intriguing opportunities for magnetically switchable polaritonics in the hybrid charge-transfer heterostructures.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"42 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149209321","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
Single-Particle View of Doping-Controlled Charge Recombination in BiVO4 BiVO4中掺杂控制电荷复合的单粒子观点
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-10-01 DOI: 10.1021/acs.nanolett.6c03155
Sean McCoy, Devon Stritesky, Liam Todd, Marissa Ashworth, Mahdi Hesari
{"title":"Single-Particle View of Doping-Controlled Charge Recombination in BiVO4","authors":"Sean McCoy,&nbsp;Devon Stritesky,&nbsp;Liam Todd,&nbsp;Marissa Ashworth,&nbsp;Mahdi Hesari","doi":"10.1021/acs.nanolett.6c03155","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03155","url":null,"abstract":"<p>Chemical doping of semiconductors has been widely usedto alterand enhance the photochemistry of materials. More specifically, thenature of the doping element(s) influences the inherent electronicand structural properties of semiconductors. The morphology of thesemiconductor particles can further impact the photocatalytic performanceof the materials. We report here that solo- and codoping of truncatedpyramidal BiVO<sub>4</sub> with phosphorus and nitrogen affects thephotoluminescence (PL) pattern and enhances the emission intensity,as observed using confocal fluorescence microscopy. The PL emissionhas been shown to increase with doping in P:BiVO<sub>4</sub>, N:BiVO<sub>4</sub>, and P:N:BiVO<sub>4</sub> by 6.8%, 10.8%, and 19.2%, respectively,relative to that of BiVO<sub>4</sub>. Our subparticle analyses revealeda trend of corner edge &gt; top edge &gt; side edge. We demonstratedthatcodoping diminishes the sensitivity of PL to the particle volume,reducing the impact of structural heterogeneity in BiVO<sub>4</sub>.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13887–13895"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173400","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
Homotopic Vortex Lasing Mediated by a Resonant Geometric Phase in a Bound States in the Continuum Cavity 连续腔中束缚态共振几何相位介导的同调涡旋激光
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-29 DOI: 10.1021/acs.nanolett.6c02899
Ronghui Lin, Thi Thu Ha Do, Emek Goksu Durmusoglu, Deepak K. Sharma, Syed Akhil, Vytautas Valuckas, Corentin Dabard, Arseniy I. Kuznetsov, Hilmi Volkan Demir, Jinghua Teng, Son Tung Ha
{"title":"Homotopic Vortex Lasing Mediated by a Resonant Geometric Phase in a Bound States in the Continuum Cavity","authors":"Ronghui Lin,&nbsp;Thi Thu Ha Do,&nbsp;Emek Goksu Durmusoglu,&nbsp;Deepak K. Sharma,&nbsp;Syed Akhil,&nbsp;Vytautas Valuckas,&nbsp;Corentin Dabard,&nbsp;Arseniy I. Kuznetsov,&nbsp;Hilmi Volkan Demir,&nbsp;Jinghua Teng,&nbsp;Son Tung Ha","doi":"10.1021/acs.nanolett.6c02899","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c02899","url":null,"abstract":"<p>Geometric phases are fundamental to wave physics andunderpin abroad range of optical phenomena. The most prominent example, thePancharatnam–Berry (PB) phase, originates from polarizationevolution during wave propagation. In contrast, geometric phases associatedwith optical resonances and cavities remain largely unexplored. Here,we uncover the relation between the generalized PB phase and the far-fieldpolarization evolution in bound states in the continuum (BIC) cavities.We demonstrate the continuous homotopic evolution of vortex lasingmodes through geometric-phase engineering of BIC resonances. To experimentallyvalidate this concept, we realize metasurface lasers composed of titaniumdioxide hole arrays integrated with CdSe/Cd<sub><em>x</em></sub>Zn<sub>1–<em>x</em></sub>S core/shell colloidalquantum wells as the gain medium. Our results reveal a previouslyunexplored form of spin–orbit interaction in BIC cavities underoblique incidence and provide a versatile route for on-chip controlof polarization and orbital angular momentum in nanolasers.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13802–13809"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173797","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
Magnetic-Field-Induced Large OER Enhancement in Co-Based Ferrimagnetic Thin Films 钴基铁磁薄膜中磁场诱导的大OER增强
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-29 DOI: 10.1021/acs.nanolett.6c03575
Li Liu, Ziang Meng, Guojian Zhao, Zhiyuan Duan, Jingyu Li, Sixu Jiang, Xiaoyang Tan, Shiheng Bu, Chen Liang, Xiaoning Wang, Peixin Qin, Zhiqi Liu
{"title":"Magnetic-Field-Induced Large OER Enhancement in Co-Based Ferrimagnetic Thin Films","authors":"Li Liu,&nbsp;Ziang Meng,&nbsp;Guojian Zhao,&nbsp;Zhiyuan Duan,&nbsp;Jingyu Li,&nbsp;Sixu Jiang,&nbsp;Xiaoyang Tan,&nbsp;Shiheng Bu,&nbsp;Chen Liang,&nbsp;Xiaoning Wang,&nbsp;Peixin Qin,&nbsp;Zhiqi Liu","doi":"10.1021/acs.nanolett.6c03575","DOIUrl":"https://doi.org/10.1021/acs.nanolett.6c03575","url":null,"abstract":"<p>Electrochemical water splitting offers a promising routeto sustainablehydrogen production, yet the oxygen evolution reaction (OER) remainskinetically sluggish and subject to spin-selection constraints associatedwith triplet O<sub>2</sub>. Here, CoTb ferrimagnetic thin films withstrong perpendicular magnetic anisotropy (PMA) are used to investigatethe relationship between magnetic ordering and OER kinetics. Undera 300 mT magnetic field, the onset potential decreases by ∼96mV and the Tafel slope by ∼15.1 mV·dec<sup>–1</sup>, accompanied by reduced charge-transfer resistance. The enhancedOER activity is strongly correlated with magnetic-state regulationand largely retained after field removal. Tb-mediated 3<em>d</em>–4<em>f</em> exchange and strong PMA contribute toregulating and retaining the Co magnetic state, which may influenceinteractions between Co active sites and oxygen intermediates. Thisnonvolatile magnetic state may eliminate the need for continuous fieldapplication, potentially reducing energy consumption. These findingsprovide a new perspective for magnetically regulated electrocatalysts.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13962–13970"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173717","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
One-Dimensional van der Waals Heterostructure Field-Effect Transistors 一维范德华异质结构场效应晶体管
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-11 DOI: 10.1021/acs.nanolett.6c02908
Yicheng Ma, Zhou Zhou, Lingfeng Wang, Tianyu Wang, Chunxia Yang, Qi Zhang, Wule Zhu, Zongyin Yang, Yongjia Zheng, Ya Feng, Sihan Zhao, Shigeo Maruyama, Rong Xiang
{"title":"One-Dimensional van der Waals Heterostructure Field-Effect Transistors","authors":"Yicheng Ma,&nbsp;Zhou Zhou,&nbsp;Lingfeng Wang,&nbsp;Tianyu Wang,&nbsp;Chunxia Yang,&nbsp;Qi Zhang,&nbsp;Wule Zhu,&nbsp;Zongyin Yang,&nbsp;Yongjia Zheng,&nbsp;Ya Feng,&nbsp;Sihan Zhao,&nbsp;Shigeo Maruyama,&nbsp;Rong Xiang","doi":"10.1021/acs.nanolett.6c02908","DOIUrl":"10.1021/acs.nanolett.6c02908","url":null,"abstract":"<p>Single-walled carbon nanotubes (SWCNTs) are promisingcandidatesfor next-generation nanoelectronics, but their atomically thin geometryand large surface area make device performance highly susceptibleto environmental degradation. Here, we fabricate field-effect transistorsbased on individual one-dimensional (1D) van der Waals heterostructuresconsisting of SWCNTs encapsulated by few-layer boron nitride nanotubes(BNNTs). We directly fabricate devices on the same individual nanotubewith and without BNNT protection, enabling a reliable comparison oftheir device performances. Statistical analysis reveals that metallicSWCNTs exhibit enhanced output currents due to the excellent electrostaticscreening of BNNTs, whereas semiconducting SWCNTs show reduced hysteresisthrough environmental isolation. Importantly, BNNTs act as a protectivebarrier against harsh environments, e.g., oxygen plasma etching, demonstratingtheir ability and potential to protect the channel during fabrication.This work suggests that coating SWCNTs with atomically smooth BNNTand forming a 1D vdW heterostructure could significantly enhance theelectrical performance and environmental robustness.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13810–13818"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148933821","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
Silicon-Deposited Porous Carbon Anodes: A Design Paradigm for Next-Generation High-Energy-Density Lithium-Ion Batteries 硅沉积多孔碳阳极:下一代高能量密度锂离子电池的设计范例。
IF 9.1 1区 材料科学
Nano Letters Pub Date : 2026-10-14 Epub Date: 2026-09-28 DOI: 10.1021/acs.nanolett.6c03725
Guifang Zeng, Jing Li, Hamid Mollania, Karol Viviana Mejia-Centeno, Malik Dilshad Khan, Yanhong Tian, Andreu Cabot, Qing Sun
{"title":"Silicon-Deposited Porous Carbon Anodes: A Design Paradigm for Next-Generation High-Energy-Density Lithium-Ion Batteries","authors":"Guifang Zeng,&nbsp;Jing Li,&nbsp;Hamid Mollania,&nbsp;Karol Viviana Mejia-Centeno,&nbsp;Malik Dilshad Khan,&nbsp;Yanhong Tian,&nbsp;Andreu Cabot,&nbsp;Qing Sun","doi":"10.1021/acs.nanolett.6c03725","DOIUrl":"10.1021/acs.nanolett.6c03725","url":null,"abstract":"<p>Silicon is a promisinganode for high-energy-density lithium-ionbatteries (LIBs) due to its exceptionally high theoretical capacity,yet severe volume expansion and interfacial instability hinder practicalapplication. Silicon-deposited porous carbon (SiDPC), which spatiallyconfines nanosized silicon within porous carbon frameworks, offersa distinct structural paradigm beyond conventional mechanically blendedSi–C composites. This mini-review summarizes the evolutionand engineering principles of SiDPC architectures, highlighting howstructural regulation governs electrochemical performance. Particularattention is given to the synergistic management of volume expansion,stress evolution, electron/Li<sup>+</sup> transport, and solid electrolyteinterphase formation, through which SiDPC has evolved from passivebuffering to active structural regulation. Remaining challenges inscalable synthesis, electrode engineering, and practical applicationare discussed, alongside opportunities for programmable Si–Carchitectures enabled by intelligent structural design. This reviewprovides mechanistic insights and design guidelines for advancingSiDPC toward practical high-energy-density silicon anodes for LIBs.</p>","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"26 40","pages":"13713–13729"},"PeriodicalIF":9.1,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072797","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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