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High-Performance Oxide Thin-Film Transistors with Atomic Layer Deposition-Grown HfO2/BeO Hetero-Dielectric
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-20 DOI: 10.1021/acs.nanolett.5c00552
Sein Lee, Yoonseo Jang, Wooho Ham, Jonghyun Bae, Kyunghwan Kim, Jeong-Min Park, Junseo Lee, Min-Kyu Song, Dohwan Jung, Prakash R. Sultane, Jae-Hoon Han, Christopher W. Bielawski, Jungwoo Oh, Jang-Yeon Kwon
{"title":"High-Performance Oxide Thin-Film Transistors with Atomic Layer Deposition-Grown HfO2/BeO Hetero-Dielectric","authors":"Sein Lee, Yoonseo Jang, Wooho Ham, Jonghyun Bae, Kyunghwan Kim, Jeong-Min Park, Junseo Lee, Min-Kyu Song, Dohwan Jung, Prakash R. Sultane, Jae-Hoon Han, Christopher W. Bielawski, Jungwoo Oh, Jang-Yeon Kwon","doi":"10.1021/acs.nanolett.5c00552","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00552","url":null,"abstract":"Atomic layer deposition-grown beryllium oxide (BeO) is gaining attention as a dielectric material that can minimize device power consumption because of its high dielectric constant, high thermal conductivity, and low leakage current enabled by its wide bandgap energy. In this study, the impact of BeO dielectrics on InSnZnO (ITZO) thin-film transistors (TFTs) was investigated, revealing that adding a hafnium dioxide (HfO<sub>2</sub>) layer can enhance electrical performance and bias stress reliability. Time-of-flight secondary-ion mass spectrometry and X-ray photoelectron spectroscopy confirmed that the single-BeO dielectric-based ITZO TFTs exhibited a low mobility of 27.6 cm<sup>2</sup>/V·s due to Be migration and demonstrated abnormal threshold voltage (<i>V</i><sub>TH</sub>) shifts under bias stress. Conversely, the HfO<sub>2</sub> 20 nm/BeO hetero-dielectric ITZO TFTs exhibited a high mobility of 76.6 cm<sup>2</sup>/V·s and enhanced abnormal <i>V</i><sub>TH</sub> shift characteristics. Therefore, these results demonstrate that our high-performance HfO<sub>2</sub>/BeO hetero-dielectric-based ITZO TFTs could be utilized in back-end-of-line devices for monolithic three-dimensional memory technologies.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"653 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143853551","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
Dynamic Chiral Folding for Arene–Perfluoroarene Force Driven Clamping 烯-全氟芴的动态手性折叠力驱动夹具
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-20 DOI: 10.1021/acs.nanolett.5c01416
Yunying Xu, Aiyou Hao, Pengyao Xing
{"title":"Dynamic Chiral Folding for Arene–Perfluoroarene Force Driven Clamping","authors":"Yunying Xu, Aiyou Hao, Pengyao Xing","doi":"10.1021/acs.nanolett.5c01416","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01416","url":null,"abstract":"Peptide folding provides a feasible protocol to design intelligent chiral supramolecular systems toward sensing, recognition, and many other advanced functions. Here we conjugated dual short peptide arms on the aromatic core in a spatially close manner, allowing for intramolecular folding. Through controlling the aromatic core skeleton and appended luminophores, efficient chirality transfer to terminal pyrenes was realized. The through-space transferred chirality exhibited ultrahigh sensitivity toward solvent environments. Micropockets within dipeptides would accommodate the solvents specifically to initiate the chiroptical inversion expressed in the ground-state circular dichroism and the circularly polarized luminescence at photoexcited states. The dynamics also were depicted on the selective binding of guests through arene–perfluoroarene interactions. We successfully constructed a dynamic peptide-based clamp that could control the <i>endo</i>- and <i>exo</i>-type arene–perfluoroarene complexation. This work inspires the design and fabrication of peptide-based chiroptical materials with adaptability to external fields.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"29 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143853552","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
Toughening Mechanisms in Stacked Bilayer Graphene Sheets by Means of Sandwiched 1D Nano-rebars
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-20 DOI: 10.1021/acs.nanolett.5c01513
Muhammad Usama Arshad, Yuxiang Gan, Congjie Wei, Xingkang She, Pavan V. Kolluru, Chenglin Wu, Mohammad Naraghi
{"title":"Toughening Mechanisms in Stacked Bilayer Graphene Sheets by Means of Sandwiched 1D Nano-rebars","authors":"Muhammad Usama Arshad, Yuxiang Gan, Congjie Wei, Xingkang She, Pavan V. Kolluru, Chenglin Wu, Mohammad Naraghi","doi":"10.1021/acs.nanolett.5c01513","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01513","url":null,"abstract":"Graphene, with an intrinsic strength of &gt;100 GPa, exhibits promise for armor applications. However, the thermodynamically favorable manufacturing defects severely diminish their achievable strength. To remedy this, 1D nano-rebars, sandwiched between graphene monolayers, were studied. Real-time mode-I crack growth resistance was studied in reinforced graphene under SEM, which revealed that the dissipative interactions between 1D and 2D nanomaterials can increase the ductility of graphene by over 100%, albeit at a slight loss in effective toughness. This significant improvement was analyzed by introducing the concept of geometric conformity to explain the load transfer between them. By means of finite element analysis and shear lag models we explained the contribution of dissipative interactions between nano-rebar and graphene in reducing stress concentration around cracks, leading to high ductility. The dissipative bonds were found to be more favorable over covalent bonds in terms of maintaining a lower interface stress, further delaying interface local failure.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"17 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143853553","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
High Pressure Resistance in Omniphobic Distillation Membranes with Re-entrant Nanostructures 具有重入式纳米结构的全疏蒸馏膜的耐高压性
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-18 DOI: 10.1021/acs.nanolett.5c01604
Sangsuk Lee, Omar A. Laris, Elizabeth A. Hjelvik, Eric M. V. Hoek, Anthony P. Straub
{"title":"High Pressure Resistance in Omniphobic Distillation Membranes with Re-entrant Nanostructures","authors":"Sangsuk Lee, Omar A. Laris, Elizabeth A. Hjelvik, Eric M. V. Hoek, Anthony P. Straub","doi":"10.1021/acs.nanolett.5c01604","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01604","url":null,"abstract":"We developed pressure-resistant omniphobic membranes that enable stable distillation of low-surface-tension liquids at applied pressures exceeding 15 bar. Membranes were synthesized by grafting re-entrant nanostructures onto porous alumina membranes, followed by hydrophobic modification. The membranes exhibited a high liquid entry pressure of 36.2 bar with water and withstood an applied pressure up to 15.5 bar with a low-surface-tension 15 wt % ethanol–water mixture. Simulations revealed that the enhanced wetting resistance is due to the presence of re-entrant structures, which facilitated a 220% increase in wetting pressure for the low-surface-tension liquid compared to a control membrane with cylindrical pores. We further demonstrated stable pressure-driven distillation of low-surface-tension liquids, achieving higher than 97% salt rejection. This work is the first demonstration of distillation membranes operating with low-surface-tension liquids under high applied pressures and provides critical validation of wettability theory under extreme pressures.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"32 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849730","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
Cascade Production of In Situ Oxygen and Singlet Oxygen from Self-Assembled Nanophotosensitizer for Anti-Hypoxic Photodynamic Therapy
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-18 DOI: 10.1021/acs.nanolett.5c01324
Ruida Bai, Linfang Yang, Mingxuan Jia, Ruizhe Chen, Haolin Zhang, Yonghui Pan, Ping He, Xiaofei Miao, Quli Fan, Wenbo Hu
{"title":"Cascade Production of In Situ Oxygen and Singlet Oxygen from Self-Assembled Nanophotosensitizer for Anti-Hypoxic Photodynamic Therapy","authors":"Ruida Bai, Linfang Yang, Mingxuan Jia, Ruizhe Chen, Haolin Zhang, Yonghui Pan, Ping He, Xiaofei Miao, Quli Fan, Wenbo Hu","doi":"10.1021/acs.nanolett.5c01324","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01324","url":null,"abstract":"Photosensitizers (PSs) capable of <i>in situ</i> oxygen (O<sub>2</sub>) production are attractive for overcoming hypoxia in photodynamic therapy (PDT). However, these PSs generally require multiple components and complex fabrication procedures, preventing their clinical translation. Herein, we develop a single-component nanophotosensitizer via simple self-assembly that enables cascade production of <i>in situ</i> O<sub>2</sub> and singlet oxygen (<sup>1</sup>O<sub>2</sub>) for superior antibacterial PDT (aPDT). Perylene tetracarboxylic acid (PTA) molecules self-assemble into nanophotosensitizers (PTA NPs). Mechanism studies reveal dual functionality of PTA NPs due to their antiparallel-displaced π–π stacking. Aggregated PTA molecules undergo intermolecular electron transfer to yield substantial photogenerated holes, while unimolecular PTA undergoes intersystem crossing to produce triplet PS (<sup>3</sup>PS*). These holes effectively oxidize water into O<sub>2</sub> <i>in situ</i>, which then participates in downstream photosensitization with <sup>3</sup>PS* to yield <sup>1</sup>O<sub>2</sub>. This cascade reaction affords PTA NPs with continuous O<sub>2</sub> supply and efficient <sup>1</sup>O<sub>2</sub> production, enabling a 63.07% higher antibacterial rate compared with the clinical antibiotic vancomycin.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"61 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849660","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
J-Aggregated Fluorescence Nanoparticles with Multichromatic Performance Enable Sensitive LFIA Platform
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-18 DOI: 10.1021/acs.nanolett.5c01012
Gan Zhang, Keyang Lai, Lilin Zhang, Xiaocui Lai, Shengliang Deng, Juan Peng, Weihua Lai
{"title":"J-Aggregated Fluorescence Nanoparticles with Multichromatic Performance Enable Sensitive LFIA Platform","authors":"Gan Zhang, Keyang Lai, Lilin Zhang, Xiaocui Lai, Shengliang Deng, Juan Peng, Weihua Lai","doi":"10.1021/acs.nanolett.5c01012","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01012","url":null,"abstract":"The application of conventional lateral flow immunoassay (LFIA) remains challenging due to its single signal readout and poor sensitivity. In this work, we developed J-aggregated fluorescence nanoparticles (JNPs) with multichromatic performance and employed them as reporters for the simultaneous and sensitive detection of T-2 and AFB1 toxins on the LFIA platform. Upon the strong confinement effect of nanoparticles, the emission region of JNPs was red-shifted from ∼545 to ∼620 nm, exhibiting a strong J-aggregation phenomenon. Subsequently, two JNPs with green emission and red emission were employed for the development of multiplexed LFIA platform (JNPs–LFIA) for on-site quantitative detection of T-2 and AFB1 toxins, with the limits of detection of 0.645 ng mL<sup>–1</sup> and 0.0035 ng mL<sup>–1</sup>, which were 3.5-fold and 12.2-fold lower than those of AuNPs-LFIA, respectively. Overall, this work provides an efficient strategy for the design of multichromatic immunoprobes and promotes the development of reporters in biosensing application.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"28 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849729","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
Full-Color Quasi-Achromatic Imaging with a Dual-Functional Metasurface
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-18 DOI: 10.1021/acs.nanolett.5c00695
Xiaomin Du, Wenjing Shen, Jian Li, Yanhao Chu, Jiacheng Sun, Junyi Wang, Jitao Ji, Chen Chen, Shining Zhu, Tao Li
{"title":"Full-Color Quasi-Achromatic Imaging with a Dual-Functional Metasurface","authors":"Xiaomin Du, Wenjing Shen, Jian Li, Yanhao Chu, Jiacheng Sun, Junyi Wang, Jitao Ji, Chen Chen, Shining Zhu, Tao Li","doi":"10.1021/acs.nanolett.5c00695","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00695","url":null,"abstract":"Achieving broadband achromaticity in the visible spectrum is critical for enhancing the imaging performance of metalenses. However, many previous studies remain constrained by small device sizes or small numerical aperture. In this study, we propose a polarization-multiplexed metalens capable of generating zero- and high-order Bessel beams to achieve quasi-achromatic correction without size limitations. An image subtraction method with the two polarization channels is developed to mitigate the Bessel beam sidelobes to improve imaging quality. Our results demonstrate an effective quasi-achromatic focusing and imaging over a continuous wavelength range of 450–700 nm with long focus depth. The image subtraction method significantly enhances the image clarity and contrast, providing new insights for full-color imaging and detection.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"108 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846587","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
Time-Dependent Room-Temperature Afterglow of Carbon Dots Constructed by Trap-Induced Multiemission Centers
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-18 DOI: 10.1021/acs.nanolett.5c00723
Zhun Ran, Hongjie Jia, Ziting Zhong, Hongwei Yang, Yinda Zhu, Yuqi Li, Jinkun Liu, Xuejie Zhang, Jianle Zhuang, Yingliang Liu, Bingfu Lei, Chaofan Hu
{"title":"Time-Dependent Room-Temperature Afterglow of Carbon Dots Constructed by Trap-Induced Multiemission Centers","authors":"Zhun Ran, Hongjie Jia, Ziting Zhong, Hongwei Yang, Yinda Zhu, Yuqi Li, Jinkun Liu, Xuejie Zhang, Jianle Zhuang, Yingliang Liu, Bingfu Lei, Chaofan Hu","doi":"10.1021/acs.nanolett.5c00723","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00723","url":null,"abstract":"Traps, due to the ability to capture, store, and release charge carriers, have attracted significant attention in the construction of long afterglow materials. In this study, a one-step in situ calcination strategy was employed to fabricate carbon dot (CD)-based composites, and the traps were designed as one of the emission centers within the composite system. Upon removal of ultraviolet light, the materials showed a time-dependent afterglow color (TDAC), with the luminescent color gradually changing from orange to green. The study indicates that the dynamic afterglow results from the energy transfer from traps to the surface triplet state of the CDs. In addition, CDs generated during the in situ calcination process serve as dopants, increasing the number of original traps and facilitating the formation of new ones. Based on the TDAC characteristics, we demonstrate the applications in anti-counterfeiting and information encryption. This strategy offers new insights into the development of multicolor afterglow materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"151 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846588","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
Influence of Metal Interlayers on Spin-Charge Conversion in Sb2Te3 Topological Insulator-Based Devices 金属夹层对基于 Sb2Te3 拓扑绝缘体器件中自旋电荷转换的影响
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-18 DOI: 10.1021/acs.nanolett.4c06658
Emanuele Longo, Matteo Belli, Claudia Wiemer, Alessio Lamperti, Andrey V. Matetskiy, Polina M. Shevedyaeva, Paolo Moras, Marco Fanciulli, Roberto Mantovan
{"title":"Influence of Metal Interlayers on Spin-Charge Conversion in Sb2Te3 Topological Insulator-Based Devices","authors":"Emanuele Longo, Matteo Belli, Claudia Wiemer, Alessio Lamperti, Andrey V. Matetskiy, Polina M. Shevedyaeva, Paolo Moras, Marco Fanciulli, Roberto Mantovan","doi":"10.1021/acs.nanolett.4c06658","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c06658","url":null,"abstract":"The magnetization of a ferromagnetic layer can be controlled via spin-charge conversion (SCC) phenomena originating in an adjacent topological insulator (TI). Insertion of nonmagnetic interlayers between these materials has been demonstrated to enhance the SCC efficiency, as shown for Sb<sub>2</sub>Te<sub>3</sub>/Au/Co(Fe) heterostructures. The inert nature of the Sb<sub>2</sub>Te<sub>3</sub>/Au interface was assumed to preserve the topological surface state (TSS) of Sb<sub>2</sub>Te<sub>3</sub>, which mediates the SCC. Al is explored as an alternative to Au for its long spin diffusion length. Spin pumping experiments indicate the absence of SCC in the Sb<sub>2</sub>Te<sub>3</sub>/Al/Co heterostructure. Core level and valence band photoemission spectroscopies reveal that Al forms stable compounds with Te and Sb, thereby quenching the TSS of Sb<sub>2</sub>Te<sub>3</sub>, while the TSS is preserved upon the formation of the TI/Au interface. These results demonstrate directly the major influence of material chemistry and highlight the role of TSS on the SCC efficiency in TI-based devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"11 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849659","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
Emissive Chalcogenide Perovskite Nanowires
IF 10.8 1区 材料科学
Nano Letters Pub Date : 2025-04-18 DOI: 10.1021/acs.nanolett.5c00815
Yuxin Jiang, Han K. D. Le, Lior Verbitsky, Hannah DeVyldere, Alexander M. Oddo, Bruce Pan, Hee-geun Song, Cheng Zhu, Heqing Zhu, Mary C. Scott, Peidong Yang
{"title":"Emissive Chalcogenide Perovskite Nanowires","authors":"Yuxin Jiang, Han K. D. Le, Lior Verbitsky, Hannah DeVyldere, Alexander M. Oddo, Bruce Pan, Hee-geun Song, Cheng Zhu, Heqing Zhu, Mary C. Scott, Peidong Yang","doi":"10.1021/acs.nanolett.5c00815","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00815","url":null,"abstract":"Efficient and stable one-dimensional semiconductor nanowires are critical for the development of next-generation on-chip optoelectronics. Here, we report a synthetic approach to produce high-quality nanowires based on chalcogenide perovskite via a vapor phase reaction inside a sealed ampule. An epitaxial vapor-phase growth mechanism is proposed. The nanowires are shown to be single crystalline and highly structurally stable, with a preferential growth along the [010] direction. Red and green photoluminescence (PL) is observed from BaZrS<sub>3</sub> and SrHfS<sub>3</sub> nanowires, respectively, and the emission is shown to be tunable with varying compositions. PL lifetime is measured by fitting the decay curve with a biexponential model. The longer radiative recombination lifetime component is on the time scale of nanoseconds, indicating good nanowire sample quality with a promising potential for optoelectronic applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"136 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846586","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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