Field emission properties of ZnO nanorod arrays by few seed layers assisted growth

Liu, Yufang; Li, Chun; Wang, Jiesheng; Fan, Xiaoyan; Yuan, Guang; Xu, Shunfu; Xu, Mingchan; Zhang, Jing; Zhao, Yongjiao

doi:10.1016/j.apsusc.2015.01.061

Cited by 25 publications

(9 citation statements)

References 33 publications

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“…4(a)), it is found that the turn-on fields of the GC-BNWs and BNW films are 6.4 V/µm and 7.5 V/µm (at 10 µA/cm 2 emission current density), respectively. The turnon electronic field of the GC-BNWs is lower than that of the ZnO nanorods with AlN coating, [24] ZnO nanorods, [25] and Si-doped and Mg-doped AlN nanocones. [26] The field emission performance is improved when graphene covers the surface of the BNWs.…”

Section: Resultsmentioning

confidence: 85%

Preparation of few-layer graphene-capped boron nanowires and their field emission properties

et al. 2016

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Large-area boron nanowire (BNW) films were fabricated on the Si(111) substrate by chemical vapor deposition (CVD). The average diameter of the BNWs is about 20 nm, with lengths of 5-10 µm. Then, graphene-capped boron nanowires (GC-BNWs) were obtained by microwave plasma chemical vapor deposition (MPCVD). Characterization by scanning electron microscopy indicates that few-layer graphene covers the surface of the boron nanowires. Field emission measurements of the BNWs and GC-BNW films show that the GC-BNW films have a lower turn-on electric field than the BNW films.

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Section: Resultsmentioning

confidence: 85%

Preparation of few-layer graphene-capped boron nanowires and their field emission properties

et al. 2016

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“…an average of ±5%) was observed even after continuous emission for 180 min. These spitzer shaped 1D ZnO nanowires exhibited very stable and improved electron emission than that of gold nanoparticle decorated ZnO nanopillars, 27 monolayer graphene supported by well-aligned ZnO nanowire arrays grown on Si substrates, 44 seed layer assisted ZnO nanorods, 45 ZnO nanowires derived after annealing gold deposited Zn substrate at 400 °C, 46 and ZnO multipods, submicron wires and spherical structures obtained by vapour deposition. 47 The exclusive participation of the sharp tips of the ZnO nanowires as emitters conceivably enhanced the emission ability.…”

Section: Resultsmentioning

confidence: 98%

Spitzer shaped ZnO nanostructures for enhancement of field electron emission behaviors

et al. 2018

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We observed enhanced field emission (FE) behavior for spitzer shaped ZnO nanowires synthesized via a hydrothermal approach. The spitzer shaped and pointed tipped 1D ZnO nanowires of average diameter 120 nm and length $5-6 mm were randomly grown over an ITO coated glass substrate. The turn-on field (E on ) of 1.56 V mm À1 required to draw a current density of 10 mA cm À2 from these spitzer shaped ZnO nanowires is significantly lower than that of pristine and doped ZnO nanostructures, and

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“…This ZnO seed layer is generally deposited by a broad range of techniques such as sputter-coating, drop-casting and spin-coating nanoparticles. These techniques collectively produce a wide range of different as-grown pre-treated substrate types [32,[34][35][36][37][38][39]. Therefore, it is important and relevant to study and understand the effects that the ZnO seed layer and the other growth parameters have on the degree of control over the morphology and dimensions of ZnO NRs, and to determine the reproducibility of these results.…”

Section: Articlementioning

confidence: 99%

Defect-free ZnO nanorods with high angular distribution for enhanced excitonic emission

Fiedler

Phillips

2023

Journal of Materials Research

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Low-temperature hydrothermal growth has emerged as a popular method for the fabrication of ZnO nanorods (NRs), increasing the functionality and utility of ZnO-based devices. In this work, we study the influence of growth time, temperature and seed layer on the dimensions and angular distribution of ZnO NRs. High-quality NRs with a crisscrossed 60° angular distribution have been grown with a 20–60 nm diameter and 600 nm length. We show that, within the ideal range of growth parameters, the growth time and temperature have no controllable influence on NR diameter and length, while the deposition method and size of the pre-growth deposited ZnO seeds affects diameter and NR angular alignment. We demonstrate advantages of using crisscross-aligned NRs over planar ZnO for the enhancement of ZnO excitonic emission by optical coupling with gold nanoparticles. These results can be readily adapted for applications that involve surface coating-mediated enhancement of both light emission and injection. Graphical abstract

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Field emission properties of ZnO nanorod arrays by few seed layers assisted growth

Cited by 25 publications

References 33 publications

Preparation of few-layer graphene-capped boron nanowires and their field emission properties

Preparation of few-layer graphene-capped boron nanowires and their field emission properties

Spitzer shaped ZnO nanostructures for enhancement of field electron emission behaviors

Defect-free ZnO nanorods with high angular distribution for enhanced excitonic emission

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