Nano Letters最新文献_第5页

Ultrabright and Efficient Green Perovskite Light-Emitting Diodes Enabled by Well-Crystallized Dense CsPbBr3 Nanocubes 由结晶良好的致密 CsPbBr3 纳米立方体实现的超亮高效绿色 Perovskite 发光二极管

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c04121

Bai-Sheng Zhu, Zhen-Yu Ma, Yong-Hui Song, Jing-Ming Hao, Kuang-Hui Song, Guan-Jie Ding, Ya-Lan Hu, Ya-Ping Xie, Yi-Chen Yin, Hong-Bin Yao

{"title":"Ultrabright and Efficient Green Perovskite Light-Emitting Diodes Enabled by Well-Crystallized Dense CsPbBr3 Nanocubes","authors":"Bai-Sheng Zhu, Zhen-Yu Ma, Yong-Hui Song, Jing-Ming Hao, Kuang-Hui Song, Guan-Jie Ding, Ya-Lan Hu, Ya-Ping Xie, Yi-Chen Yin, Hong-Bin Yao","doi":"10.1021/acs.nanolett.4c04121","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04121","url":null,"abstract":"Perovskite light-emitting diodes (PeLEDs) are promising for next-generation high-definition displays. One of the keys to achieving high performance PeLEDs lies in how to fabricate crystalline and dense perovskite films. However, there exist challenges to directly grow well-crystallized CsPbBr3 nanocrystal thin films on transport layers due to low solubility in solvents and fast precipitation of all-inorganic CsPbBr3, and the corresponding bright, efficient, and stable green PeLEDs have rarely been reported. Herein, we report an efficient strategy to prepare well-crystallized and dense CsPbBr3 nanocubes for ultrabright and efficient green PeLEDs. We introduce sulfobetaine zwitterion as crystallization control agent and strontium fluoride nanocrystals as nucleation seeds to grow high-quality CsPbBr3 nanocube films. Eventually, the CsPbBr3 films enable green PeLEDs with a maximum luminance of 162 767 cd m–2 and a champion external quantum efficiency of 21.3% along with a narrow spectral line width of ∼14.7 nm, representing state-of-the-art performances in green PeLEDs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":10.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599049","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

Enhancing Resonant Second-Harmonic Generation in Bilayer WSe2 by Layer-Dependent Exciton-Polaron Effect 通过层依赖性激子-极子效应增强双层 WSe2 中的共振二次谐波生成

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c04544

Soonyoung Cha, Tianyi Ouyang, Takashi Taniguchi, Kenji Watanabe, Nathaniel M. Gabor, Chun Hung Lui

{"title":"Enhancing Resonant Second-Harmonic Generation in Bilayer WSe2 by Layer-Dependent Exciton-Polaron Effect","authors":"Soonyoung Cha, Tianyi Ouyang, Takashi Taniguchi, Kenji Watanabe, Nathaniel M. Gabor, Chun Hung Lui","doi":"10.1021/acs.nanolett.4c04544","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04544","url":null,"abstract":"Two-dimensional (2D) materials serve as exceptional platforms for controlled second-harmonic generation (SHG). Current approaches to SHG control often depend on nonresonant conditions or symmetry breaking via single-gate control. Here, we employ dual-gate bilayer WSe2 to demonstrate an SHG enhancement concept that leverages strong exciton resonance and a layer-dependent exciton-polaron effect. By selectively localizing injected holes within one layer, we induce exciton-polaron states in the hole-filled layer while maintaining normal exciton states in the charge-neutral layer. The distinct resonant conditions of these layers effectively break interlayer inversion symmetry, thereby promoting resonant SHG. This method achieves a remarkable 40-fold enhancement of SHG at minimal electric field, equivalent to conditions near the dielectric-breakdown threshold but using only ∼3% of the critical breakdown field. Our results highlight SHG sensitivity to carrier density and type, offering a new tool for manipulating SHG and probing quantum states in 2D excitonic systems.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":10.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599101","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

Proximal Anchoring of Nanodrugs through In Situ Generated Radical Hooks with Boosted Autophagy and Immunotherapy 通过原位生成的自由基钩子近端锚定纳米药物，促进自噬和免疫疗法

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c03929

Hongqian Liu, Yuebo Li, Junyang An, Zhenlong Lu, Qian Ma, Dingqing Feng, Suying Xu, Leyu Wang

引用次数: 0

Quantum Coherence Control at Temperatures up to 1400 K 温度高达 1400 K 的量子相干控制

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c04359

Jing-Wei Fan, Shuai-Wei Guo, Chao Lin, Ning Wang, Gang-Qin Liu, Quan Li, Ren-Bao Liu

引用次数: 0

Polarization and Charge-Separation of Moiré Excitons in van der Waals Heterostructures 范德瓦尔斯异质结构中莫伊里激子的极化和电荷分离

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c03915

Joakim Hagel, Samuel Brem, Ermin Malic

引用次数: 0

Microscopic Origin of Twist-Dependent Electron Transfer Rate in Bilayer Graphene 双层石墨烯中扭曲电子转移率的微观起源

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c04690

Leonardo Coello Escalante, David T. Limmer

引用次数: 0

Multimodal 2D Ferroelectric Transistor with Integrated Perception-and-Computing-in-Memory Functions for Reservoir Computing 集成感知和内存计算功能的多模态二维铁电晶体管，用于水库计算

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c05071

Jiachao Zhou, Anzhe Chen, Yishu Zhang, Xinwei Zhang, Jian Chai, Jiayang Hu, Hanxi Li, Yang Xu, Xulang Liu, Ning Tan, Fei Xue, Bin Yu

{"title":"Multimodal 2D Ferroelectric Transistor with Integrated Perception-and-Computing-in-Memory Functions for Reservoir Computing","authors":"Jiachao Zhou, Anzhe Chen, Yishu Zhang, Xinwei Zhang, Jian Chai, Jiayang Hu, Hanxi Li, Yang Xu, Xulang Liu, Ning Tan, Fei Xue, Bin Yu","doi":"10.1021/acs.nanolett.4c05071","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05071","url":null,"abstract":"Emerging neuromorphic hardware promises energy-efficient computing by colocating multiple essential functions at the individual component level. The implementation is challenging due to mismatch between the characteristics of multifunctional devices and neural networks. Here, we demonstrate an artificial synapse based on a 2D α-phase indium selenide that exhibits integrated perception-and-computing-in-memory functions in a single-transistor setup, serving as a basic building block for reservoir computing. Extending to the array architecture enables concurrent image-sensing and memory. Further, we implement multimode deep-reservoir computing with adjustable nonlinear transformation and multisensory fusion using this core device. In the lane-keeping-assistance task for an unmanned vehicle, the system demonstrates ∼104 times lower energy consumption and significantly boosted data throughput compared to the state-of-the-art graphics processors. The demonstrated perception-and-computing-in-memory (PCIM) functions at a single-transistor level shows the feasibility of implementing ultrascalable, resource-efficient hardware for brain-inspired computing.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":10.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599103","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

Accurate Layer-Number Determination of Hexagonal Boron Nitride Using Optical Characterization 利用光学特性准确测定六方氮化硼的层数

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c04241

Tianyu Zhang, Shuang Qiao, Hongxia Xue, Zhongqi Wang, Chengdong Yao, Xiong Wang, Kai Feng, Lain-Jong Li, Dong-Keun Ki

引用次数: 0

Fully Integrated Passive Wireless Sensor with Mechanical–Electrical Double-Gradient for Multifunctional Healthcare Monitoring 用于多功能医疗监控的机械-电气双梯度全集成无源无线传感器

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c04215

Zhihao Zhou, Hongbing Wu, Jingjing Fu, Gaoqiang Zhang, Peng Li, Yushu Xia, Xue Wang, Yuanyuan Li, Jin Yang

{"title":"Fully Integrated Passive Wireless Sensor with Mechanical–Electrical Double-Gradient for Multifunctional Healthcare Monitoring","authors":"Zhihao Zhou, Hongbing Wu, Jingjing Fu, Gaoqiang Zhang, Peng Li, Yushu Xia, Xue Wang, Yuanyuan Li, Jin Yang","doi":"10.1021/acs.nanolett.4c04215","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04215","url":null,"abstract":"Accurate, effective, and continuous monitoring of pressure, moisture, and temperature is essential for routine health assessments and professional patient care. In this study, we present a fully integrated multiparameter passive wireless sensor (MWS) that employs a mechanical–electrical dual-gradient structure design. The unique gradient porous structure endows the MWS with significant advantages in terms of detection dimensions (pressure, moisture, and temperature), sensitivity, and stability. Compared to single mechanical gradient designs, the sensor demonstrates 2.6 times higher pressure sensitivity and a 5-tier moisture detection capability. By bridging the technology gap between high-precision multiparameter sensing, wireless communication, and energy management, the MWS is capable of measuring multiple physiological parameters, including breath, ballistocardiograph, moisture, and temperature at multiple points, providing real-time assessments of the physiological state of the subjects. This work offers valuable quantitative insights for caregivers and paves the way for significant advancements in personal healthcare management.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":null,"pages":null},"PeriodicalIF":10.8,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142599097","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

Photocatalytic Magnetic Microgyroscopes with Activity-Tunable Precessional Dynamics 具有活性可调前序动力学的光催化磁性显微镜

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-11-11 DOI: 10.1021/acs.nanolett.4c03386

Dolachai Boniface, Arthur V. Straube, Pietro Tierno

引用次数: 0