Thermal plasma synthesized nano-powders of (LaCe)B6 starting from oxide-based precursors and its field electron emission performance

Kamble, Shalaka A.; Harpale, Kashmira; Nandi, A. K.; Ghorui, S.; Bhattacharjee, D.; Bhoraskar, S. V.; More, Mahendra A.; Mathe, V. L.

doi:10.1016/j.apt.2022.103526

Cited by 3 publications

(1 citation statement)

References 77 publications

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“…Therefore, it is necessary to choose cathode materials appropriately. Many kinds of nanostructured materials are used as electron emitters, such as metal microtips, metal oxides, carbides, and carbon nanostructures (such as carbon nanotubes (CNTs) and graphene) [15][16][17][18][19][20][21][22]. Among the many available materials, CNTs are considered to be one of the most promising field emission materials.…”

Section: Introductionmentioning

confidence: 99%

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Chen,

Chang,

et al. 2023

J. Phys. D: Appl. Phys.

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High field emission of carbon nanotube (CNT) cold cathodes is realized by printing modified CNT paste on small-hole-patterned substrates. The field emission characteristics and stability of samples under DC continuous and pulse driving modes have been investigated. The results show that the maximum emission current of CNT emitters can be up to 45 mA at an electric field of 2100 V (7.0 V μm−1), corresponding to a high current density of 643 mA cm−2 under continuous mode. The cathodes also demonstrate stable electron emission without obvious attenuation. In pulse (10 μs and 200 Hz) mode, the peak current can reach 250 mA and the corresponding current density is 3.57 A cm−2 under an electric field of 14.0 V μm−1. The hole-patterned CNT cathode presents unique advantages in field emission current, stability and especially endurance of high electric field. This work makes it possible to fabricate highly efficient emission CNT cold electron sources, which have broad application prospects in vacuum electronic devices requiring both large current and high current density.

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Section: Introductionmentioning

confidence: 99%

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Chen,

Chang,

et al. 2023

J. Phys. D: Appl. Phys.

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Thermal plasma processing of technologically important materials

Kamble,

Jangale,

Bhopale

et al. 2024

Fundamental Plasma Physics

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Optimized synthesis and characterization of La(OH)₃ and LaB₆ nanostructures for enhanced NIR optical filters

Bulbul,

Toprak,

Sayrac

et al. 2024

Phys. Scr.

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The present study describes a method for synthesizing nanostructured La(OH)3 and LaB6 materials with efficient field emission properties using the spin coating technique. The study was motivated by the significant demand for the optical properties of LaB6 with efficient field emission properties using the spin coating technique in the near-infrared (NIR) region. The optimization of the LaB6 synthesis process for economic and reproducible results is highlighted, showcasing a systematic approach starting from La(OH)3 formation through chemical mixing and high-temperature heating, followed by boron incorporation. The systematic methodology includes forming La(OH)3 through chemical mixing and high-temperature heating, followed by combining it with boron to achieve the LaB6 structure. Characterization methods such as XRD, FTIR, SEM, AFM, and SIMS validated the successful synthesis and uniformity of the materials. Optical analyses showed increased visible transmittance and reduced infrared transmittance for the LaB6 thin film. Optical analyses showed increased visible transmittance and decreased infrared transmittance in the 110 nm thick LaB6 film, with an absorption valley at 1000 nm. SEM images revealed microstructural features and AFM analysis indicated a homogeneous distribution of La and B atoms with an RMS value of 0.87 nm. SIMS analysis confirmed uniform atomic distribution throughout the film thickness. The optimized recipes contribute to the efficiency and controllability of the synthesis process. The presented results provide valuable insights into material synthesis methodologies and serve as a crucial reference for utilizing LaB6 materials in infrared devices.

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Thermal plasma synthesized nano-powders of (LaCe)B6 starting from oxide-based precursors and its field electron emission performance

Cited by 3 publications

References 77 publications

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Thermal plasma processing of technologically important materials

Optimized synthesis and characterization of La(OH)₃ and LaB₆ nanostructures for enhanced NIR optical filters

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Thermal plasma synthesized nano-powders of (LaCe)B6 starting from oxide-based precursors and its field electron emission performance

Cited by 3 publications

References 77 publications

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Boosting field electron emission of carbon nanotubes through small-hole-patterning design of the substrate

Thermal plasma processing of technologically important materials

Optimized synthesis and characterization of La(OH)3 and LaB6 nanostructures for enhanced NIR optical filters

Contact Info

Product

Resources

About

Optimized synthesis and characterization of La(OH)₃ and LaB₆ nanostructures for enhanced NIR optical filters