Nano Letters最新文献_第2页

Self-Trapped Excitons or Bi3+ Ions for Broad Emission in a Lead-Free Double Perovskite? Hearing What Pressure Says 自捕获激子或Bi3+离子在无铅双钙钛矿中的广泛发射？倾听压力在说什么

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-28 DOI: 10.1021/acs.nanolett.5c01709

Zhiwei Ma, Pengfei Lv, Xin He, Feng Wang, Yongguang Li, Guanjun Xiao, Bo Zou

{"title":"Self-Trapped Excitons or Bi3+ Ions for Broad Emission in a Lead-Free Double Perovskite? Hearing What Pressure Says","authors":"Zhiwei Ma, Pengfei Lv, Xin He, Feng Wang, Yongguang Li, Guanjun Xiao, Bo Zou","doi":"10.1021/acs.nanolett.5c01709","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01709","url":null,"abstract":"The broad emission origin of lead-free double perovskites with ns2-metal ion doping remains a long-standing controversy. Herein, pressure is introduced as a robust tool to determine the mechanism of broad emission from Cs2AgIn0.9Bi0.1Cl6 nanocrystals (NCs). The negative correlation between the crystal field strength and broad emission wavelength under compression corroborates that the broad emission is indeed attributed to the radiative recombination of self-trapped excitons, ruling out Bi3+ emission from 3Pn (n = 0, 1, or 2) to 1S0 as an alternative mechanism. The broad emission is composed of two types of self-trapped states due to the different structures of BiCl6–AgCl6 and InCl6–AgCl6. The abnormal emission enhancement within the range of 5.01–10.01 GPa results from the local distortion of BiCl6 octahedra that increases the exciton–phonon coupling strength. Our study elucidates the long-term dispute about the origin of broad emission in Cs2AgIn0.9Bi0.1Cl6 NCs, representing a significant step forward in the precise design and synthesis of targeted lead-free double perovskite materials.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"14 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144165757","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

Surface-Dominated Quantum-Metric-Induced Nonlinear Transport in the Layered Antiferromagnet CrSBr 层状反铁磁体CrSBr中表面主导量子诱导的非线性输运

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c00195

Kamal Das, Yufei Zhao, Binghai Yan

引用次数: 0

Stable Lithium Anodes Enabled by the Hardening and High Li+ Flux Interlayer 通过硬化和高Li+通量夹层实现稳定的锂阳极

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c01606

Shaozhen Huang, Kun Li, An Wang, Siru He, Zhangdi Xie, Huimiao Li, Zhibin Wu, Yuejiao Chen, Libao Chen

引用次数: 0

Degradation Pathway Tailoring through Nanocrystal Interface Engineering for Photostable Perovskite Solar Cells 基于纳米晶界面工程的光稳定钙钛矿太阳能电池降解途径裁剪

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c01111

Huichao Guo, Fangzhou Liu, Cuncun Wu, Yan Guan, Xian Zhang, Tengyu Xu, Jiaqi Zhang, Shaogeng Cai, Jian Li, Yilin Wei, Yangyang Zhang, Shijian Zheng

{"title":"Degradation Pathway Tailoring through Nanocrystal Interface Engineering for Photostable Perovskite Solar Cells","authors":"Huichao Guo, Fangzhou Liu, Cuncun Wu, Yan Guan, Xian Zhang, Tengyu Xu, Jiaqi Zhang, Shaogeng Cai, Jian Li, Yilin Wei, Yangyang Zhang, Shijian Zheng","doi":"10.1021/acs.nanolett.5c01111","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01111","url":null,"abstract":"While organic–inorganic hybrid perovskites (ABX3) hold immense photovoltaic potential, operational instability originating from defect-mediated ion migration and light-induced degradation remains a critical bottleneck. Here, we adopt Cs2PbI2Cl2 nanocrystals (CPIC-NCs) and CsPbCl3 nanocrystals (CPC-NCs) to modify the interface of the perovskite light-absorbing layer. Beyond conventional defect-healing roles (Cs+/halide filling of the A/X-site vacancies), this modification can fundamentally alter the degradation pathways of perovskite films under light exposure. Our study reveals CPIC-NCs serve as a superior modifier by inducing a more controllable formation of Pb(OH)I and effectively suppressing the decomposition of perovskite into lead iodide after long-term light aging. Following the CPIC-NCs modification of the solar cells, a champion power conversion efficiency of 24.28% was achieved. Moreover, the unencapsulated devices retained over 90% of their initial efficiency after 600 h under ISOS-L-1I and 4500 h under ISOS-D-1 conditions. This work establishes nanocrystal-mediated interface control as a dual-defect/degradation regulatory strategy for perovskite optoelectronics.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"25 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153664","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

Three-Dimensional Porous Copper Conductive Paper. 三维多孔铜导电纸。

IF 9.6 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c02228

Zheng Li, Xiaoli Ge, Clayton L Rumsey, Jun Zhang, Qikun Feng, ZhongXuan Wang, Saurabh Khuje, Abdullah Islam, Pratahdeep Gogoi, Martin Trebbin, Yuguang C Li, Shenqiang Ren

{"title":"Three-Dimensional Porous Copper Conductive Paper.","authors":"Zheng Li, Xiaoli Ge, Clayton L Rumsey, Jun Zhang, Qikun Feng, ZhongXuan Wang, Saurabh Khuje, Abdullah Islam, Pratahdeep Gogoi, Martin Trebbin, Yuguang C Li, Shenqiang Ren","doi":"10.1021/acs.nanolett.5c02228","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c02228","url":null,"abstract":"Conductive paper promises benefits in flexible biodegradable electronics and sustainability but faces challenges in its conductivity, stress-bearing, hierarchical manufacturing, and integration with existing technologies. Herein, we report self-reducing and grafting copper onto paper cellulose fiber networks activated through a nonequilibrium photonic approach. A three-dimensional volumetric paper conductor exhibits a sheet resistance of 5 Ω/square, hydrophobicity with a water contact angle of 95°, and tailored thermal emissivity for thermal management. Furthermore, the cellulose-Cu network conductor facilitated the infiltration of silicon during lithiation and acted as a buffer to mitigate mechanical failure due to capillary action. Interestingly, the cellulose-Cu-silicon paper conductors achieved real-time pressure monitoring during the (de)lithiation cycles. Three-dimensional porous structured paper conductors demonstrate the potential for integrating electronic and ionic transport as flexible biodegradable battery electrodes with real-time pressure sensing.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":" ","pages":""},"PeriodicalIF":9.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148675","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

Phase Transition during Sintering of Layered Transition Metal Oxide Sodium Cathodes 层状过渡金属氧化物钠阴极烧结过程中的相变

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c01518

Fangbo Ma, Hao Chen, Hu Wu, Xun-Lu Li, Xiaotong Liu, Bohua Wen, Jiayan Luo

{"title":"Phase Transition during Sintering of Layered Transition Metal Oxide Sodium Cathodes","authors":"Fangbo Ma, Hao Chen, Hu Wu, Xun-Lu Li, Xiaotong Liu, Bohua Wen, Jiayan Luo","doi":"10.1021/acs.nanolett.5c01518","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01518","url":null,"abstract":"Layered cathodes derived from precursor materials have garnered significant attention in sodium ion battery (SIB) research. However, the structure evolution mechanisms during the sintering process remain inadequately understood. In this work, two precursors with irregular and regular morphologies were subjected to identical calcination conditions to synthesize O3-NaNi0.4Fe0.2Mn0.4O2 cathodes. Comprehensive analysis revealed that the irregular precursor underwent heterogeneous Na+ diffusion, resulting in an R3̅m structure shell encapsulating a substantial rock-salt phase core during the solid-state sodiation process. This leads to drastic phase transition and generated unfavorable pores in the subsequent high-temperature process. In contrast, the regular quasi-spherical precursor maintains a uniform Na+ accessibility throughout the sintering process, which facilitated optimal phase evolution and yielded superior electrochemical performance. This investigation elucidates the critical relationship between precursor morphology and phase transition dynamics, providing crucial insights into the rational design of precursor-derived layered cathodes in SIB applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"151 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153768","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

Biomass Based Moisture-Triggered Hybrid Actuator and Electric Generator with Self-Powered Motion Tracking Capability 具有自供电运动跟踪能力的生物质湿触发混合执行器和发电机

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c01624

Mingyuan Liu, Yijun Yao, Xinyang He, Zixiu Li, Yansong Liu, Hongxing Tao, Zhen Li, Yue Zhang, Liming Wang, Hongnan Zhang, Xiaohong Qin

{"title":"Biomass Based Moisture-Triggered Hybrid Actuator and Electric Generator with Self-Powered Motion Tracking Capability","authors":"Mingyuan Liu, Yijun Yao, Xinyang He, Zixiu Li, Yansong Liu, Hongxing Tao, Zhen Li, Yue Zhang, Liming Wang, Hongnan Zhang, Xiaohong Qin","doi":"10.1021/acs.nanolett.5c01624","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c01624","url":null,"abstract":"Constructing moisture-triggered devices with actuation, power generation, and motion tracking capability simultaneously utilizing solution-processable biomass materials is intriguing while remaining a great challenge. Herein, we designed and integrated a device for synchronized actuation and energy output under moisture stimulation, which was constructed with Zn–C electrodes, a biomass film, and a PET film. The biomass membrane with hygroscopicity and ion transport was fabricated using the long-term stable microgel (CKM-GO) composed of cellulose, keratin, and graphene oxide (GO). The integrated device possessed both the fascinating actuation parameters (bending angle of 117°, response time of 3.5 s, curvature of 0.51 cm–1) and energy output (output voltage of 1.2 V and current of 2.2 μA) at 80% RH. Furthermore, the assembled arms grasped–released an object under moisture stimulation, meanwhile the self-powered generated voltage signal tracked the operation process. The device with multiple moisture-responsive functions provides promising platforms for self-powered motion tracking, intelligent robotics, and energy production.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"35 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153770","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

Unlocking Ampere-Level Nitrate Electroreduction to Ammonia Via the Built-In Electric Field in Monometallic Catalysts 利用单金属催化剂内建电场解锁安培级硝酸电还原制氨

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c00926

Zhihong He, Qian Zhou, Xin Zi, Yong Zhang, Qing Li, Dongyang Li, Min Liu, Fang Yu, Haiqing Zhou

{"title":"Unlocking Ampere-Level Nitrate Electroreduction to Ammonia Via the Built-In Electric Field in Monometallic Catalysts","authors":"Zhihong He, Qian Zhou, Xin Zi, Yong Zhang, Qing Li, Dongyang Li, Min Liu, Fang Yu, Haiqing Zhou","doi":"10.1021/acs.nanolett.5c00926","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00926","url":null,"abstract":"Bimetallic/multimetallic catalysts for nitrate reduction reaction (NO3–RR) have been extensively investigated benefiting from their synergistic effects in optimizing various intermediate adsorptions; however, the interphasic synergistic effects in monometallic catalysts are often overlooked. Here we report an interphasic synergy between electron-rich Co(OH)2 and electron-deficient CoO, in which the asymmetric charge distribution in monometallic cobalt-based heterojunction derived from the built-in electric field (BEF) significantly accelerates electron transfer and lowers the energy barriers for NO3–RR. Theoretical calculations reveal that the chemical affinities of Co atoms toward NO3– and NO2– are significantly enhanced and even NO3– adsorption switches to a spontaneous process. Simultaneously, the BEF in monometallic Co-based heterostructures greatly reduces the energy barrier of the rate-determining step (*NO→*NOH) in the NO3–RR. Therefore, the resultant catalyst exhibits ampere-level NO3–RR performance, achieving a record NH3 yield up to 73.9 mg h–1 cm–2 at a low potential of −0.2 V with a Faradaic efficiency (FE) of 95.6%.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"68 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153771","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

Realizing Abundant Two-Dimensional Altermagnets with Anisotropic Spin Current Via Spatial Inversion Symmetry Breaking. 利用空间反演对称破缺实现具有各向异性自旋电流的丰富二维交替磁体。

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c00198

Chao Liu,Xiangyang Li,Xingxing Li,Jinlong Yang

{"title":"Realizing Abundant Two-Dimensional Altermagnets with Anisotropic Spin Current Via Spatial Inversion Symmetry Breaking.","authors":"Chao Liu,Xiangyang Li,Xingxing Li,Jinlong Yang","doi":"10.1021/acs.nanolett.5c00198","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00198","url":null,"abstract":"Altermagnets exhibit nonrelativistic spin splitting with net-zero magnetic moments, making them advantageous for spintronic devices with miniaturized size and high integration. Developing general methods to design altermagnets, particularly in a low dimension, is highly desirable. Here, we propose that breaking the spatial inversion symmetry of crystals can produce altermagnetism in antiferromagnetic monolayers. By applying Janus structurization to two-dimensional (2D) FeSe-type monolayers, 41 polar altermagnets were successfully identified through first-principles calculations, confirming the feasibility of our proposed approach. Furthermore, via systematic screening, we obtained 29 altermagnets with significant spin splitting (>0.5 eV) and high Néel temperatures (above liquid nitrogen temperature). Moreover, using 2D Mn2PSe as an example, we revealed the mechanism of how polarity drives the transformation of antiferromagnets into altermagnets and demonstrated its anisotropic spin current generation and notable spin Hall effect. This work paves a way for realizing high-performance and multifunctional nanoaltermagnets.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"35 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146118","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

Construction of Cation-Conducting and Anion-Capture Solid Electrolyte Interphase for Highly Stable Sodium Metal Batteries 高稳定钠金属电池中阳离子导电和阴离子俘获固体电解质界面的构建

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-05-27 DOI: 10.1021/acs.nanolett.5c02034

Boqian Yi, Zhixuan Wei, Yangyang Xia, Shiyu Yao, Heng Jiang, Ge Sun, Nan Chen, Yi Zeng, Fei Du

{"title":"Construction of Cation-Conducting and Anion-Capture Solid Electrolyte Interphase for Highly Stable Sodium Metal Batteries","authors":"Boqian Yi, Zhixuan Wei, Yangyang Xia, Shiyu Yao, Heng Jiang, Ge Sun, Nan Chen, Yi Zeng, Fei Du","doi":"10.1021/acs.nanolett.5c02034","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c02034","url":null,"abstract":"Sodium metal batteries are promising for grid-scale storage but suffer from dendrite growth due to anion-induced cation mobility limitations. To address this, we designed an artificial solid–electrolyte interphase (SEI) by grafting a fast Na+ ion conductor, Na5GdSi4O12, with oxygen vacancies (NGSO-Vo), onto a glass fiber (GF) separator. This unique structure combines fast Na+ conduction (8.55 mS cm–1) with anion immobilization, achieving a high Na+ transference number (0.9) in a conventional NaClO4/PC electrolyte. The NGSO-Vo-modified GF exhibits exceptional mechanical stability, effectively suppressing dendrite growth. As a result, Na||Na symmetric cells achieve an ultrahigh current density (30 mA cm–2) and long-term cycling (1500 h at 20 mA cm–2). Moreover, Na3V2(PO4)2F3||Na pouch cells with high mass loading (24 mg cm–2) demonstrate a record stability (4000 h). This work presents a simple yet universal strategy to enhance Na-metal battery durability, paving the way for practical energy storage applications.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"83 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153772","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