Nano Letters最新文献_第2页

An Orientation-Enhanced Interlayer Enables Efficient Sn–Pb Binary Perovskite Solar Cells and All-Perovskite Tandem Solar Cells with High Fill Factors

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-23 DOI: 10.1021/acs.nanolett.4c04652

Ruitian Sun, Pengshuai Wang, Tao Wang, Lin Zhang, Zhizhong Ge, Liang Qiao, Tianshi Ye, Fan Li, Weijun Liu, Yanjie Wen, Xudong Yang

{"title":"An Orientation-Enhanced Interlayer Enables Efficient Sn–Pb Binary Perovskite Solar Cells and All-Perovskite Tandem Solar Cells with High Fill Factors","authors":"Ruitian Sun, Pengshuai Wang, Tao Wang, Lin Zhang, Zhizhong Ge, Liang Qiao, Tianshi Ye, Fan Li, Weijun Liu, Yanjie Wen, Xudong Yang","doi":"10.1021/acs.nanolett.4c04652","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04652","url":null,"abstract":"The performance of narrow-bandgap (NBG) perovskite solar cells (PSCs) is limited by the severe nonradiative recombination and carrier transport barrier at the electron selective interface. Here, we reveal the importance of the molecular orientation for effective defect passivation and protection for Sn2+ at the perovskite/C60 interface. We constructed an internally self-anchored dual-passivation (ISADP) layer, where the orientation of PCBM can be significantly enhanced by the interaction between ammonium and carbonyl groups. It can facilitate the contact with C60 and minimize the nonradiative energy loss at the electron transport interface. This strategy remarkably enhances the FF of NBG PSCs, from 77.45% to 82.88%, and the power conversion efficiency (PCE) from 20.67% to 24.02%. Moreover, monolithic all-perovskite TSCs exhibit a high certified PCE (under reverse scan) of 28.12% and a record FF of 84.25%. This work opens up a new pathway for enhancing the performance of monolithic all-perovskite TSCs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"14 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874450","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

Mild Focused Ultrasound-Induced Microscopic Heating of Nanoparticles Observed by Lanthanide Luminescence for Precise Sonothermal Cancer Therapy

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-22 DOI: 10.1021/acs.nanolett.4c05175

Lingkai Meng, Sixin Xu, Qian Hu, Hao Wang, Pengrui Wang, Ruotong Li, Yifeng Zhang, Tiange Shi, Na Kong, Xingjun Zhu

{"title":"Mild Focused Ultrasound-Induced Microscopic Heating of Nanoparticles Observed by Lanthanide Luminescence for Precise Sonothermal Cancer Therapy","authors":"Lingkai Meng, Sixin Xu, Qian Hu, Hao Wang, Pengrui Wang, Ruotong Li, Yifeng Zhang, Tiange Shi, Na Kong, Xingjun Zhu","doi":"10.1021/acs.nanolett.4c05175","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05175","url":null,"abstract":"Focused ultrasound (FUS) is a recognized tool that can be used clinically for the thermal ablation of tumors. However, excessive heat can cause side effects on the ultrasound transmission path and normal tissues around the tumor. To address the issue, this work detected for the first time the effect of microscopic heating of nanoparticles under the action of FUS through the luminescence intensity ratio (LIR) and luminescence lifetime of temperature-responsive lanthanide-doped nanoparticles. When FUS is applied to the tissue embedded with nanoparticles, the increase in the microscopic temperature of the nanoparticles synchronously monitored by LIR is more obvious than the increase in the macroscopic temperature. Based on this phenomenon, the intensity of focused ultrasound can be finely regulated to avoid overheating while ensuring a therapeutic effect. This work achieves the measurement of the microscopic heating of nanoparticles under FUS, which is of great significance for the development of sonothermal cancer therapy.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"1 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874484","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

Breaking the Spin-Forbidden Restriction to Achieve Long Lifetime Room-Temperature Phosphorescence of Carbon Dots

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c05187

Zengsheng Guo, Fangzheng Qi, Juan Dong, Jingtian Xue, Yilei Wang, Bo Xu, Guang-Ning Liu, Yiqiang Sun, Cuncheng Li

{"title":"Breaking the Spin-Forbidden Restriction to Achieve Long Lifetime Room-Temperature Phosphorescence of Carbon Dots","authors":"Zengsheng Guo, Fangzheng Qi, Juan Dong, Jingtian Xue, Yilei Wang, Bo Xu, Guang-Ning Liu, Yiqiang Sun, Cuncheng Li","doi":"10.1021/acs.nanolett.4c05187","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05187","url":null,"abstract":"Room-temperature phosphorescent (RTP) carbon dots (CDs) demonstrate significant potential applications in the field of information anticounterfeiting due to their excellent optical properties. However, RTP emission of CDs remains significantly limited due to the spin-forbidden properties of triplet exciton transitions. In this work, an in situ nitrogen doping strategy was employed to design and construct strong spin–orbit coupling nitrogen-doped CDs with mesoporous silica with alumina (N-CDs@MS@Al2O3) RTP composites. Both experimental results and theoretical calculations confirmed that the formation of 1(n, π*) following the introduction of nitrogen breaks the spin-forbidden restriction from 1(π, π*) to 3(π, π*), thereby enhancing spin–orbit coupling, which further promotes intersystem crossing and leads to the effective population of triplet excitons. The designed N-CDs@MS@Al2O3 benefiting from an impressive long lifetime of 3.18 s demonstrates potential application prospects in the field of multilevel information encryption. This work provides a new concept to boost the RTP lifetime of CDs.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"261 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857671","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

A Near-Infrared-II Fluorescent Nanoprobe Offering Real-Time Tracking of Fenton-Like Reaction for Cancer Chemodynamic Theranostics

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c05087

Jingwen Sun, Shuai Gao, Guoguang Wei, Sheng Yu, Sihang Zhang, Afeng Yang, Wei Lu

{"title":"A Near-Infrared-II Fluorescent Nanoprobe Offering Real-Time Tracking of Fenton-Like Reaction for Cancer Chemodynamic Theranostics","authors":"Jingwen Sun, Shuai Gao, Guoguang Wei, Sheng Yu, Sihang Zhang, Afeng Yang, Wei Lu","doi":"10.1021/acs.nanolett.4c05087","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05087","url":null,"abstract":"Chemodynamic therapy (CDT) utilizing Fenton or Fenton-like reactions to generate cytotoxic hydroxyl radicals by metal ions has become a compelling strategy for cancer treatment. Visualizing intratumoral Fenton or Fenton-like reactions especially at a cellular level in real-time can directly monitor the process of CDT, which is not yet feasible. Here, we present a molecule BADA chelating Cu2+ to form Cu-BADA nanoparticles, exhibiting fluorescence quenching properties through intermolecular electron transfer. The nanoparticles are lit up owing to glutathione and acid dual activatable Fenton-like reaction and generation of near-infrared-II fluorescent o-quinones. Moreover, fluorescence vanishing correlated with the decreased intratumoral Cu concentration, thus enabling to track the “on–off” process of Fenton-like reaction specifically in the tumor. Compared to 660 nm-excitation, the o-quinones excited at 830 nm offer deeper tissue near-infrared-II fluorescence imaging with higher resolution. Our results demonstrate a fluorescence nanotheranostic agent for CDT capable of monitoring the spatiotemporal dynamics of Fenton-like reaction.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"29 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142867533","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

Bioinspired Active Dynamic Dust Remover for Multiscale Stardust Repelling of Unmanned Probe Surface

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c05480

You Chen, Zijing Quan, Haoran Xie, Bo Li, Jie Zhao, Shichao Niu, Zhiwu Han, Luquan Ren

引用次数: 0

Tunable Topological Transitions Probed by the Quantum Hall Effect in Twisted Double Bilayer Graphene

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c04242

Zehao Jia, Xiangyu Cao, Shihao Zhang, Jinshan Yang, Jingyi Yan, Yuda Zhang, Xin Lu, Pengliang Leng, Enze Zhang, Linfeng Ai, Xiaoyi Xie, Minsheng Li, Li Qian, Jianpeng Liu, Shaoming Dong, Faxian Xiu

{"title":"Tunable Topological Transitions Probed by the Quantum Hall Effect in Twisted Double Bilayer Graphene","authors":"Zehao Jia, Xiangyu Cao, Shihao Zhang, Jinshan Yang, Jingyi Yan, Yuda Zhang, Xin Lu, Pengliang Leng, Enze Zhang, Linfeng Ai, Xiaoyi Xie, Minsheng Li, Li Qian, Jianpeng Liu, Shaoming Dong, Faxian Xiu","doi":"10.1021/acs.nanolett.4c04242","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c04242","url":null,"abstract":"The moiré system provides a tunable platform for investigating exotic quantum phases. Particularly, the displacement field D is crucial for tuning the electronic structures and topological properties of twisted double bilayer graphene (TDBG). Here, we present a series of D-tunable topological transitions by the evolution of quantum Hall phases (QHPs) in the valence bands of TDBG. As D increases, we observe the alternating emergence of two distinct quantum Hall regions originating from full-filling and half-filling, which we attribute to the D-induced Lifshitz transition. Moreover, we delve into the remote valence bands of TDBG and observe a transition in the sequence of Landau levels upon the application of D, shifting from 8N + 4 to 8N. This observation, combined with theoretical calculations, unveils an alteration in the Berry phase. Our findings highlight the TDBG as an exemplary platform for understanding the origin of the topological transitions in the graphene-based moiré systems.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"40 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857667","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

Revealing Single-Molecule Photocurrent Generation Mechanisms under On- and Off-Resonance Excitation

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c05638

Rui Zhu, Xiao-Ru Dong, Ben Yang, Rui-Lin Han, Wen-Jie Mao, Gong Chen, Yao Zhang, Yang Zhang, Zhen-Chao Dong

{"title":"Revealing Single-Molecule Photocurrent Generation Mechanisms under On- and Off-Resonance Excitation","authors":"Rui Zhu, Xiao-Ru Dong, Ben Yang, Rui-Lin Han, Wen-Jie Mao, Gong Chen, Yao Zhang, Yang Zhang, Zhen-Chao Dong","doi":"10.1021/acs.nanolett.4c05638","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05638","url":null,"abstract":"We investigate photocurrent generation mechanisms in a pentacene single-molecule junction using subnanometer resolved photocurrent imaging under both on- and off-resonance laser excitation. By employing a wavelength-tunable laser combined with a lock-in technique, net photocurrent signals are extracted to elucidate photoinduced electron tunneling processes. Under off-resonance excitation, photocurrents are found to arise from photon-assisted tunneling, with contributions from three distinct frontier molecular orbitals at different bias voltages. In contrast, under resonance excitation, photocurrents are found to be significantly enhanced at negative bias voltages, exhibiting a spatial distribution linked to molecular electronic transitions and associated transition dipoles. This study reveals the contributions of different frontier molecular orbitals in the photon-assisted tunneling processes under off-resonance excitation, while molecular optical transitions are also found to be important at negative bias under resonance excitation. These findings could be instructive to the design and optimization of advanced optoelectronic devices.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"4 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857673","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 Visualization of Chiral Nano-Optical Field around Gold Nanoplates via Scanning Near-Field Optical Microscopy

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c05151

Seiju Hasegawa, Kohei Imura

引用次数: 0

DNA Origami Colloidal Crystals: Opportunities and Challenges

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c05041

Jaewon Lee, Jangwon Kim, Gregor Posnjak, Anastasia Ershova, Daichi Hayakawa, William M. Shih, W. Benjamin Rogers, Yonggang Ke, Tim Liedl, Seungwoo Lee

{"title":"DNA Origami Colloidal Crystals: Opportunities and Challenges","authors":"Jaewon Lee, Jangwon Kim, Gregor Posnjak, Anastasia Ershova, Daichi Hayakawa, William M. Shih, W. Benjamin Rogers, Yonggang Ke, Tim Liedl, Seungwoo Lee","doi":"10.1021/acs.nanolett.4c05041","DOIUrl":"https://doi.org/10.1021/acs.nanolett.4c05041","url":null,"abstract":"Over the last three decades, colloidal crystallization has provided an easy-to-craft platform for mesoscale engineering of photonic and phononic crystals. Nevertheless, the crystal lattices achieved thus far with commodity colloids are largely limited to symmetric and densely packed structures, restricting their functionalities. To obtain non-close-packed crystals and the resulting complexity of the available structures, directional binding between “patchy” colloids has been pursued. However, the conventional “patchy” colloids have been restricted to micrometer-scale spherical particles or clusters. In this Mini-Review, we argue that the time has come to widen the scope of the colloidal palette and include particles made using DNA origami. By benefiting from its unprecedented ability to control nanoscale shapes and patch placement and incorporate various nanomaterials, DNA origami enables novel engineering of colloidal crystallization, particularly for photonic and phononic applications. This mini-review summarizes the recent progress on using DNA origami for colloidal crystallization, together with its challenges and opportunities.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"86 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142858076","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

BEOL Three-Dimensional Stackable Oxide Semiconductor CMOS Inverter with a High Voltage Gain of 233 at Cryogenic Temperatures

IF 10.8 1区材料科学

Nano Letters Pub Date : 2024-12-20 DOI: 10.1021/acs.nanolett.4c04701

Yiyuan Sun, Ying Xu, Zijie Zheng, Yuxuan Wang, Yuye Kang, Kaizhen Han, Wei Shi, Jinyong Wang, Xiao Gong

引用次数: 0