Field emission and room temperature ferromagnetism properties of triangle-like ZnO nanosheets

Li, Lijun; Yu, Ke; Peng, Deyan; Zhang, Zhi; Zhu, Z. Q.

doi:10.1016/j.apsusc.2009.08.002

Cited by 11 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The turn-on electric field (the electric field required to produce an emission current density of 1 μA cm −2 ) for the ZnO nanorod arrays and nanodisk networks is 4.8 and 2.6 V μm −1 , respectively. The value of turn-on field for the ZnO nanodisk networks is lower than the data from the nanorod arrays, 35,37 nanowire arrays, 38 nanoneedles, 42 nanotetrapods 40 and triangle-like nanosheets 44 of ZnO. On the basis of the Folwer−Nordheim (F−N) model, 34 FE current from a metal or semiconductor is attributed to the tunneling of electrons from the material into a vacuum through a potential barrier under the influence of an electric field, and the relationship between the current density (J) and the field strength (E) can be depicted as…”

Section: Methodscontrasting

confidence: 56%

“…The results have been listed in Table 2. The β value of the nanodisk networks is greater than that of nanorod arrays, 35,36 nanoneedles, 42 nanowire arrays, 39 hierarchical nanostructures, 43 nanotetrapods, 40 nanocone arrays 41 and triangle-like nanosheets 44 of ZnO. These comparative results indicate that the as-synthesized ZnO hexagonal nanodisk networks possess excellent FE performance, and are a promising candidate in future FE device applications.…”

Section: Methodsmentioning

confidence: 78%

“…However, the investigation on FE property of two-dimensional ZnO nanostructures is quite rare. 44,45 To our knowledge, FE properties of the ZnO hexagonal nanodisk networks have not been reported until now although nanostructures with a sharp tip are considered to be a good candidate for FE. 46 In addition, vapor transport and condensation methods for the ZnO nanostructures usually require high temperature (800−1400°C ).…”

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Controllable Low Temperature Vapor-Solid Growth and Hexagonal Disk Enhanced Field Emission Property of ZnO Nanorod Arrays and Hexagonal Nanodisk Networks

Yang

Liu

Wang

et al. 2012

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

ZnO nanorod arrays and nanodisk networks were grown directly on Si substrate by thermal evaporation of ZnCl(2) powder and a mixture of ZnCl(2) and InCl(3)·4H(2)O at 450 °C in air, respectively. The ZnO nanorods with the diameters of 0.64 to 0.91 μm and length of about 5.1 μm are single crystalline with the hexagonal structure and grow along the [001] direction. The nanodisk has perfect hexagonal shape, grow mainly along the [0110] directions, and are enclosed by ±(0001) top and bottom surfaces. ZnO nanoparticle films oriented in the [001] direction formed first served as seeds, and grow into nanorod arrays via the vapor-solid (VS) process. However, when InCl(3)·4H(2)O was introduced into the reaction system ZnO thick nanosheet films are first formed because of the local segregation of the doping element of indium. The ZnO thick nanosheet films served as seeds, and grow into nanodisk networks via the V-S process. Photoluminescence and field emission properties of the as-obtained ZnO nanorod arrays and hexagonal nanodisk networks have been studied. It was found that the hexagonal nanodisk networks exhibit strong blue-green emissions originated from defect states and enhanced field emission property.

show abstract

Section: Methodscontrasting

confidence: 56%

Section: Methodsmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Controllable Low Temperature Vapor-Solid Growth and Hexagonal Disk Enhanced Field Emission Property of ZnO Nanorod Arrays and Hexagonal Nanodisk Networks

Yang

Liu

Wang

et al. 2012

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Basically, ZnO is a diamagnetic in bulk as a single-phase state. However, at room temperature, the magnetic order has been reported in ZnO nanostructures and thin films [ 13 , 14 , 15 ]. In the last few years, diluted magnetic semiconductors (DMSs) from groups III–V and II–VI attracted very intensive attention on account of their physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Facile Microemulsion Synthesis of Vanadium-Doped ZnO Nanoparticles to Analyze the Compositional, Optical, and Electronic Properties

et al. 2019

View full text Add to dashboard Cite

In this work, microemulsion method has been followed to synthesize vanadium-doped Zn1−xVxO (with x = 0.0, 0.02, 0.04, 0.06, 0.08, and 0.10) nanoparticles. The prepared samples are characterized by several techniques to investigate the structural, morphology, electronic, functional bonding, and optical properties. X-ray diffractometer (XRD) analysis confirms the wurtzite phase of the undoped and V-doped ZnO nanoparticles. Variation in the lattice parameters ensures the incorporation of vanadium in the lattice of ZnO. Scanning electron microscopy (SEM) shows that by increasing contents of V ions, the average particle size increases gradually. X-ray Absorption Near Edge Spectroscopy (XANES) at the V L3,2 edge, oxygen K-edge, and Zn L3,2 edge reveals the presence and effect of vanadium contents in the Zn host lattice. Furthermore, the existence of chemical bonding and functional groups are also asserted by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). UV–Visible analysis shows that by increasing V+ contents, a reduction up to 2.92 eV in the energy band gap is observed, which is probably due to an increase in the free electron concentration and change in the lattice parameters.

show abstract

“…To our knowledge, FE properties of the sharp tip nanostructures are considered to be a good candidate. However, the investigation on the FE property of 2-D ZnO nanostructures is quite rare [12]- [14]. Until now, various synthetic methods such as thermal evaporation, chemical vapor deposition (CVD), pulsed laser deposition, hydrothermal have been developed for the fabrication of ZnO nanostructures in various geometrical morphologies.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Field Emission Properties of Ga-Doped ZnO Nanosheets by using an Aqueous Solution at Room Temperature

Liu

Young

et al. 2014

IEEE Trans. Electron Devices

View full text Add to dashboard Cite

In this paper, gallium (Ga)-doped ZnO nanosheets were fabricated successfully on a glass substrate by using aqueous solution method. It was found that the GaZnO nanosheets grown at room temperature were structurally uniform and well oriented with pure wurtzite structure. The turn-on fields of ZnO and GaZnO nanosheets were 5.9 and 4.67 V/μm, and field enhancement factors (β) were 1966 and 4037, respectively. The results indicate that Ga-doped ZnO nanosheets exhibit enhanced field emission (FE) properties and are a promising candidate in future FE-based device applications.

show abstract

Field emission and room temperature ferromagnetism properties of triangle-like ZnO nanosheets

Cited by 11 publications

References 28 publications

Controllable Low Temperature Vapor-Solid Growth and Hexagonal Disk Enhanced Field Emission Property of ZnO Nanorod Arrays and Hexagonal Nanodisk Networks

Controllable Low Temperature Vapor-Solid Growth and Hexagonal Disk Enhanced Field Emission Property of ZnO Nanorod Arrays and Hexagonal Nanodisk Networks

Facile Microemulsion Synthesis of Vanadium-Doped ZnO Nanoparticles to Analyze the Compositional, Optical, and Electronic Properties

Enhanced Field Emission Properties of Ga-Doped ZnO Nanosheets by using an Aqueous Solution at Room Temperature

Contact Info

Product

Resources

About