Field emission enhancement of ZnO nanorod arrays with hafnium nitride coating

Yuan, Longyan; Fang, Guojia; Chun, Li; Li, Jun; Wang, Mingjun; Liu, Nishuang; Zhao, Xingzhong

doi:10.1016/j.surfcoat.2007.12.023

Cited by 43 publications

(12 citation statements)

References 24 publications

(29 reference statements)

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“…[4][5][6][7][8] The two kinds of ZnO-NAs have the similar geometrical shape, so they have similar enhancement factors. [18][19] And then the similar enhancement factors reconfirm that the two ZnO-NAs have the same emitter morphology. Furthermore, the CCD camera can not observe any light emission from the surface of ZnO-NAs during the emission process.…”

Section: Resultsmentioning

confidence: 61%

Study on the Electron Emission Properties of ZnO Nanorod Arrays on Different Substrates

Liao¹,

Huang²,

Qin³

et al. 2012

J. Nanosci. Nanotech.

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Large area well-aligned ZnO nanorod arrays on different substrates were synthesized by hydrothermal methods. The electron emission properties of the ZnO nanorod arrays on different substrates were investigated under both direct current (DC) and pulse electric fields. Owing to the excellent conductivity of substrates, the array on stainless steel substrate had better electron emission properties than that on silicon substrate. Under the DC and pulse electric fields, the electron emission of arrays had different production mechanisms which were pure field emission and plasma-induced emission respectively. During the plasma-induced emission, the plasma formed on the array surface, and the maximum emission current density of arrays on stainless steel was 118.87 A/cm2. The plasma-induced emission of ZnO nanorod arrays were always distributed uniformly. In this work, the results show that the ZnO nanorod arrays are expected to be applied to different electronic devices as electron beam sources under different electric fields.

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Section: Resultsmentioning

confidence: 61%

Study on the Electron Emission Properties of ZnO Nanorod Arrays on Different Substrates

Liao¹,

Huang²,

Qin³

et al. 2012

J. Nanosci. Nanotech.

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“…They attributed it to both the improvement of β and the reduction of work function. L. Yuan et al [ 94 ] synthesized the HfN x coated ZnO nanorods by using different N 2 flow ratio (denoted as f N2 in Figure 23 c). They found that the Hf 3 N 2 coated sample synthesized by using f N2 of 0.05 has a lower turn-on field which was attributed to its low work function of 1.36 eV.…”

Section: Field Emissionmentioning

confidence: 99%

“…( c ) Results for ZnO nanorods and HfN x coated ZnO nanorods. Reproduced from [ 94 ], with the permission of Elsevier, 2008. ( d ) Results for bare and different thickness LaB 6 coated ZnO nanowires.…”

Section: Figurementioning

confidence: 99%

Recent Progress on ZnO Nanowires Cold Cathode and Its Applications

Chen

Deng

et al. 2021

Nanomaterials

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A cold cathode has many applications in high frequency and high power electronic devices, X-ray source, vacuum microelectronic devices and vacuum nanoelectronic devices. After decades of exploration on the cold cathode materials, ZnO nanowire has been regarded as one of the most promising candidates, in particular for large area field emitter arrays (FEAs). Numerous works on the fundamental field emission properties of ZnO nanowire, as well as demonstrations of varieties of large area vacuum microelectronic applications, have been reported. Moreover, techniques such as modifying the geometrical structure, surface decoration and element doping were also proposed for optimizing the field emissions. This paper aims to provide a comprehensive review on recent progress on the ZnO nanowire cold cathode and its applications. We will begin with a brief introduction on the synthesis methods and discuss their advantages/disadvantages for cold cathode applications. After that, the field emission properties, mechanism and optimization will be introduced in detail. Then, the development for applications of large-area ZnO nanowire FEAs will also be covered. Finally, some future perspectives are provided.

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“…[2][3][4][5] In particular, one-dimensional (1D) ZnO nanostructures, such as nanorods and nanowires, have been considered as candidates for eld emission (FE) cathode materials [6][7][8][9][10] because of the ease with which their morphology, dimensions and even spatial arrangement can be controlled, as well as because of their high thermal stability and oxidation resistance in harsh environments. 11 However, compared with bulk materials, 1D nanostructured materials are relatively unstable and can be easily deformed during operation, especially under large current and high power density conditions. 12 The operating voltages of the as-prepared ZnO for FE are generally high because of relatively high electron affinity ($4.5 eV) 13 and large work function ($5.3 eV), 14 which may limit its practical application.…”

Section: Introductionmentioning

confidence: 99%