4.8 Article

Local defect-induced red-shift of cathodoluminescence in individual ZnS nanobelts

期刊

NANOSCALE
卷 6, 期 21, 页码 12414-12420

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr04464a

关键词

-

资金

  1. Knowledge Innovation Program of Institute of Metal Research (IMR), Chinese Academy of Science (CAS) [Y2NCA111A1]

向作者/读者索取更多资源

The luminescence of semiconductor nanostructures is strongly dependent on their size, dimensions, morphology, composition, or defects, and their band emissions can be properly and selectively tailored through the rational manipulation of these parameters during material growth. Using spatially-resolved cathodoluminescence spectroscopy, monochromatic contrast maps and high-resolution transmission electron microscopy, an obvious red-shift of the near-band-edge emission of wurtzite ZnS nanobelts, resulting from a strip of stacking faults or a zinc-blende phase with tens of atomic layers in width, has been observed and its related mechanism has been discussed. This finding is not specific to the defect-dependent optical properties tailoring of ZnS nanostructures and represents a general validity for clarifying the mechanism of peak-shift ( band-gap expansion or shrinking) of a wide range of semiconductor nanostructures with various defects. In addition, the general formation mechanism of the belt-like nano-structure was proposed based on precise microstructure analyses on a ZnS nanobelt with atomic terrace growth fronts.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Chemistry, Physical

Enhanced and switchable silicon-vacancy photoluminescence in air-annealed nanocrystalline diamond films

Bing Yang, Biao Yu, Haining Li, Nan Huang, Lusheng Liu, Xin Jiang

CARBON (2020)

Article Chemistry, Physical

Phase-separated Ce-Co-O catalysts for CO oxidation

Ruishi Zhang, Junchao Wang, Xiuhui Zhu, Xiaoyuan Liu, Haiyan Liu, Yang Zhou, Shizhi Dong, Peiqing La, Jinlei Yao, Baodan Liu

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

Article Chemistry, Multidisciplinary

High-Performance Ultraviolet-Visible Light-Sensitive 2D-MoS2/1D-ZnO Heterostructure Photodetectors

Jian Zhang, Yiting Liu, Xinglai Zhang, Zongyi Ma, Jing Li, Cai Zhang, Altynay Shaikenova, Beisenov Renat, Baodan Liu

CHEMISTRYSELECT (2020)

Article Crystallography

Electron-Beam-Induced Current and Cathodoluminescence Study of Dislocations in SrTiO3

Wei Yi, Jun Chen, Takashi Sekiguchi

CRYSTALS (2020)

Article Chemistry, Physical

Bright silicon vacancy centers in diamond/SiC composite films synthesized by a MPCVD method

Bing Yang, Haining Li, Biao Yu, Jiaqi Lu, Nan Huang, Lusheng Liu, Xin Jiang

Summary: The addition of TMS gas during the CVD process can improve the photoluminescence efficiency of SiV centers and form diamond/SiC composite films with high-brightness SiV centers. However, excessive TMS gas flow leads to an increase in SiC concentration and deterioration of photoluminescence of SiV centers.

CARBON (2021)

Article Chemistry, Physical

Graphene-coated Si nanowires as substrates for surface-enhanced Raman scattering

Haining Li, Bing Yang, Biao Yu, Nan Huang, Lusheng Liu, Jiaqi Lu, Xin Jiang

Summary: Treatment of hydrogen plasma on silicon nanowires, followed by coatings of nanocrystalline diamond and multilayer graphene, enables enhanced Raman signals with reduced fluorescent background. The graphene-coated nanowires show lower fluorescent background than diamond-coated ones, with a minimum detection limit of 10(7) mol/L and an enhancement factor exceeding 10(4). The stable Raman enhancement is attributed to hydrogen-terminated graphene and the nanowire structure, independent of graphene layers and maintaining stability after exposure to the atmosphere for a month.

APPLIED SURFACE SCIENCE (2021)

Article Multidisciplinary Sciences

Stable single atomic silver wires assembling into a circuitry-connectable nanoarray

Yaxin Chen, Daiming Tang, Zhiwei Huang, Xi Liu, Jun Chen, Takashi Sekiguchi, Weiye Qu, Junxiao Chen, Dongrun Xu, Yoshio Bando, Xiaolei Hu, Xiaoping Wang, Dmitri Golberg, Xingfu Tang

Summary: The study successfully fabricated stable atomic silver wires (ASWs) with excellent conductivity and stability, which could be applied in thermal electrical devices.

NATURE COMMUNICATIONS (2021)

Article Chemistry, Physical

Effect of surface oxidation on photoluminescence of silicon vacancy color centers in the nanocrystalline diamond films

Biao Yu, Bing Yang, Haining Li, Jiaqi Lu, Nan Huang, Lusheng Liu, Xin Jiang

Summary: Three different surface oxidation approaches were studied to investigate their effects on microstructural evolution and SiV photoluminescence in nanocrystalline diamond films. The results showed that the thickness and crystallinity of the oxidation layer played key roles in the PL enhancement of SiV centers.

APPLIED SURFACE SCIENCE (2021)

Article Chemistry, Physical

Electrochemistry of nitrogen and boron Bi-element incorporated diamond films

Tianxiao Guo, Nianjun Yang, Bing Yang, Anna Schulte, Qun Jin, Ulrike Koch, Soumen Mandal, Carsten Engelhard, Oliver A. Williams, Holger Schonherr, Xin Jiang

Summary: Boron doped diamond (BDD) is widely used in various electrochemical fields for its unique physical and chemical properties. The investigation of the electrochemistry of bi-element incorporated diamond, especially the variation of surface components after nitrogen incorporation into BDD, reveals enhanced electrochemical responses for both outer- and inner-sphere redox reactions on the NBD electrode. The nitrogen and boron atoms incorporated in diamond modulate the surface polarities and the electronic states of diamond, influencing its electrochemical applications.

CARBON (2021)

Article Chemistry, Physical

Template Approach to Large-Area Non-layered Ga-Group Two-Dimensional Crystals from Printed Skin of Liquid Gallium

Jing Li, Xinglai Zhang, Bing Yang, Cai Zhang, Tingting Xu, Lixin Chen, Liu Yang, Xin Jin, Baodan Liu

Summary: This study introduces an efficient PDMS printing strategy for controllable preparation and transfer of a large-area non-layered 2D Ga2O3 amorphous layer, and proposes a template-confined reaction to achieve other 2D Ga-group crystals, enabling the fabrication of high-performance and multifunctional electronics.

CHEMISTRY OF MATERIALS (2021)

Article Materials Science, Multidisciplinary

Cathodoluminescence Investigation of Stacking Faults and Dislocations in the Edge Part of Seed-Grown m-Plane GaN Substrate

Jun Chen, Wei Yi, Shun Ito, Takashi Sekiguchi

Summary: The extended defects in m-plane seed-grown GaN substrate, specifically the presence of basal-plane stacking faults (BSFs), have been studied using cathodoluminescence (CL) and transmission electron microscopy (TEM). The luminescence characteristics and emission peaks of I-1 and I-2 BSFs have been identified through high-resolution CL and spatially resolved spectral analysis. Additionally, the movement of dislocations under electron beam irradiation and its correlation with stacking faults have been discussed.

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE (2021)

Article Materials Science, Multidisciplinary

Fabrication of Diamond Nanoneedle Arrays Containing High-Brightness Silicon-Vacancy Centers

Jiaqi Lu, Bing Yang, Biao Yu, Haining Li, Nan Huang, Lusheng Liu, Xin Jiang

Summary: This study introduces a simple two-step method to enhance the photoluminescence efficiency of optically active silicon-vacancy (SiV) centers using silicon-doped diamond nanoneedles. By selectively etching nanocrystalline diamond and sp(2) carbon, the photoluminescence emission of SiV centers in diamond nanoneedles is increased by up to 12.1 times, revealing the significant impact of sp(2) carbon on the optical collection of color centers at the sidewall.

ADVANCED OPTICAL MATERIALS (2021)

Article Chemistry, Multidisciplinary

Two-Dimensional Diamond Formation Drivers in Chemical Vapor Deposition: Planar Defects and Graphite

Zhaofeng Zhai, Chuyan Zhang, Ruiwen Xie, Bin Chen, Ziwen Zheng, Lusheng Liu, Bing Yang, Dan Shi, Xin Jiang, Nan Huang

Summary: In this study, abundant 2D diamond nanoplatelets were successfully synthesized through chemical vapor deposition. The microstructural evolution and growth mechanism were clarified using transmission electron microscopy and first-principles calculations. It was revealed that planar defects are responsible for the formation of the 2D diamond nanoplatelets. The presence of graphite induces a blocking layer on the (111) tabular plane, which drives the formation of 2D diamond. These findings provide insights into the origin of 2D diamond in all chemical vapor deposition cases and inspire the microstructure engineering of 2D diamond for nanoelectronics and nano-optics applications.

CRYSTAL GROWTH & DESIGN (2023)

Article Physics, Applied

Impact of high-temperature Mg-implantation on defects and dopants distribution in GaN

Ashutosh Kumar, Wei Yi, Tadakatsu Ohkubo, Jun Chen, Takashi Sekiguchi, Ryo Tanaka, Shinya Takashima, Masaharu Edo, Kazuhiro Hono

Summary: We investigated the impact of high-temperature Mg-implantation on the distribution of Mg-enriched defects in GaN layers. By using scanning transmission electron microscopy and atom probe tomography, we observed fewer Mg-enriched defects in the sample implanted at 1000℃ compared to the sample implanted at room temperature. The implantation of Mg ions at 1000℃ resulted in more uniform and enhanced donor-acceptor pair emission, leading to higher Mg activation.

JOURNAL OF APPLIED PHYSICS (2023)

Article Materials Science, Multidisciplinary

Electrical tailoring of the photoluminescence of silicon-vacancy centers in diamond/silicon heterojunctions

Xiaokun Guo, Bing Yang, Jiaqi Lu, Haining Li, Nan Huang, Lusheng Liu, Xin Jiang

Summary: The regulation of charge state in color centers of diamond has been a subject of interest due to their different optical emissions. By depositing microcrystalline diamond membranes containing silicon vacancy centers on n-type silicon substrates, researchers have achieved a rectification ratio of two orders of magnitude higher in diamond/n(+)-Si heterojunctions compared to diamond/n(-)-Si heterojunctions. Detailed analysis of the band diagram showed that electron tunneling from the substrate to the diamond contributed to a larger forward current and brighter photoluminescence emission in the n(+)-Si heterojunctions. This work demonstrates the potential of increasing the population of negatively-charged color centers in diamond through the use of heavily-doped n-type materials.

JOURNAL OF MATERIALS CHEMISTRY C (2022)

Article Chemistry, Multidisciplinary

Exploring the degradation of silver nanowire networks under thermal stress by coupling in situ X-ray diffraction and electrical resistance measurements

Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet

Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Recording physiological and pathological cortical activity and exogenous electric fields using graphene microtransistor arrays in vitro

Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives

Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Metal oxide-embedded carbon-based materials for polymer solar cells and X-ray detectors

Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani

Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Peptide-mediated targeted delivery of SOX9 nanoparticles into astrocytes ameliorates ischemic brain injury

Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim

Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Spontaneous unbinding transition of nanoparticles adsorbing onto biomembranes: interplay of electrostatics and crowding

Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu

Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Autonomous nanomanufacturing of lead-free metal halide perovskite nanocrystals using a self-driving fluidic lab

Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani

Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

In situ growth of a redox-active metal-organic framework on electrospun carbon nanofibers as a free-standing electrode for flexible energy storage devices

Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin

Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

A NIR-driven green affording-oxygen microrobot for targeted photodynamic therapy of tumors

Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu

Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Novel hollow MoS2@C@Cu2S heterostructures for high zinc storage performance

Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai

Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Mechanistic elucidation of the catalytic activity of silver nanoclusters: exploring the predominant role of electrostatic surface

Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee

Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Facile green synthesis of wasted hop-based zinc oxide nanozymes as peroxidase-like catalysts for colorimetric analysis

Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He

Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Impact of channel nanostructures of porous carbon particles on their catalytic performance

Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim

Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Fabrication of a tough, long-lasting adhesive hydrogel patch via the synergy of interfacial entanglement and adhesion group densification

Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong

Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Strongly coupled plasmonic metal nanoparticles with reversible pH-responsiveness and highly reproducible SERS in solution

Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He

Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.

NANOSCALE (2024)

Article Chemistry, Multidisciplinary

Unlocking the full potential of citric acid-synthesized carbon dots as a supercapacitor electrode material via surface functionalization

Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc

Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.

NANOSCALE (2024)