Conjugated polyelectrolyte nano field emission adlayers

Cole, Matthew T.; Parmee, Richard; Kumar, Abhishek; Collins, Clare M.; Kang, Man-Su; Xiao, James; Cepek, Cinzia; Yuan, Xuesong; Milne, W. I.

doi:10.1039/c6nh00071a

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…In order to study the effect of etching time on the FE performance, the J-E curves of different etching times (10 min, 20 min, 30 min, and 60 min) were measured. Figure 5c shows the extracted turn-on electric field (defined elsewhere [36]) E to with etching time. As the etching time increases, E to increases and J (under a constant field of 8 V/µm) tends to decrease.…”

Section: Resultsmentioning

confidence: 99%

Stable Field Emission from Vertically Oriented SiC Nanoarrays

et al. 2021

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Silicon carbide (SiC) nanostructure is a type of promising field emitter due to high breakdown field strength, high thermal conductivity, low electron affinity, and high electron mobility. However, the fabrication of the SiC nanotips array is difficult due to its chemical inertness. Here we report a simple, industry-familiar reactive ion etching to fabricate well-aligned, vertically orientated SiC nanoarrays on 4H-SiC wafers. The as-synthesized nanoarrays had tapered base angles >60°, and were vertically oriented with a high packing density >107 mm−2 and high-aspect ratios of approximately 35. As a result of its high geometry uniformity—5% length variation and 10% diameter variation, the field emitter array showed typical turn-on fields of 4.3 V μm−1 and a high field-enhancement factor of ~1260. The 8 h current emission stability displayed a mean current fluctuation of 1.9 ± 1%, revealing excellent current emission stability. The as-synthesized emitters demonstrate competitive emission performance that highlights their potential in a variety of vacuum electronics applications. This study provides a new route to realizing scalable field electron emitter production.

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Section: Resultsmentioning

confidence: 99%

Stable Field Emission from Vertically Oriented SiC Nanoarrays

et al. 2021

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“…Though certainly not all, most mechanisms proposed relate to the fine physiochemistry of the emitters surface. Emitter encapsulation has been shown elsewhere to enhance the temporal stability of various one-dimensional nanoscale electron sources [14,15], with various polymer adlayers [16][17][18][19][20] evidencing potential as emission enhancing and hysteresis suppressing over-coatings. Here, via broadband optical excitation, we investigate the hysteretic field emission performance of percolative networks of polyvinylpyrrolidone (PVP) encapsulated Ag NWs.…”

Section: Introductionmentioning

confidence: 99%

Suppressed Hysteretic Field Emission from Polymer Encapsulated Silver Nanowires

Cole

Coşkun

Parmee

et al. 2016

IEEE Trans. Nanotechnology

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Suppression of the hysteretic electron emission in one-dimensional nanomaterial-based electron sources remains a critical barrier preventing their wide scale adoption in various vacuum electronics applications. Here we report on the suppressed hysteretic performance, and its photo-dependence from conformal poly-vinylpyrrolidone (PVP) encapsulated percolative Ag nanowire (NW)-based electron sources.

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