scholarly journals Low Temperature Synthesis of Lithium-Doped Nanocrystalline Diamond Films with Enhanced Field Electron Emission Properties

Nanomaterials ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 653 ◽  
Author(s):  
Kamatchi Sankaran ◽  
Kalpataru Panda ◽  
Ping-Yen Hsieh ◽  
Paulius Pobedinskas ◽  
Jeong Park ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electron Emission ◽  
High Current Density ◽  
Field Enhancement ◽  
Life Time ◽  
Field Electron Emission ◽  
Nanocrystalline Diamond ◽  
Large Field ◽  
Temperature Sensitive ◽  
Field Electron

Low temperature (350 °C) grown conductive nanocrystalline diamond (NCD) films were realized by lithium diffusion from Cr-coated lithium niobate substrates (Cr/LNO). The NCD/Cr/LNO films showed a low resistivity of 0.01 Ω·cm and excellent field electron emission characteristics, viz. a low turn-on field of 2.3 V/µm, a high-current density of 11.0 mA/cm2 (at 4.9 V/m), a large field enhancement factor of 1670, and a life-time stability of 445 min (at 3.0 mA/cm2). The low temperature deposition process combined with the excellent electrical characteristics offers a new prospective for applications based on temperature sensitive materials.

Field electron emission of diamond films on nanocrystalline diamond coating by CVD method

2003 ◽  
Vol 48 (18) ◽  
pp. 1934-1937 ◽  
Author(s):  
Rangqi Cai ◽  
Guanghua Chen ◽  
Xuemei Song ◽  
Guangjian Xing ◽  
Zhenjian Feng ◽  
...  
Keyword(s):  
Electron Emission ◽  
Diamond Films ◽  
Field Electron Emission ◽  
Nanocrystalline Diamond ◽  
Diamond Coating ◽  
Cvd Method ◽  
Field Electron

Growth of Large-Scale Praseodymium Hexaborides (PrB6) Nanowires and Enhanced Field-Emission Performance

2020 ◽  
Vol 15 (2) ◽  
pp. 276-283 ◽  
Author(s):  
Junqi Xu ◽  
Yanrui Wang ◽  
Wenjie Wang ◽  
Zijun Xu ◽  
Yonglei Jia ◽  
...  
Keyword(s):  
Field Emission ◽  
Electron Emission ◽  
Large Scale ◽  
Field Enhancement ◽  
Chemical Vapor ◽  
Field Electron Emission ◽  
Threshold Field ◽  
Analytical Instruments ◽  
Field Electron ◽  
Pressure Chemical

Large-scale PrB6 nanowires were fabricated by an effective, catalyst-free, and a simple low-pressure chemical vapor deposition (LPCVD) process. These nanowires, characterized in detail by various analytical instruments, demonstrated the large aspect ratio and high single-crystalline grown along the [001] crystal direction perpendicular to the (001) crystal plane. The field electron emission equipment tests manifest that the asgrown PrB6 products have a low turn-on field (Eto, 2.32 V/μm), a threshold field (Ethr, 4.28 V/μm), a high field enhancement factor (β, 2336), as well as a stable current-density (J) of field-emission. The relationships of the field electron emission parameters, such as J, Eto, and β versus cathode gap (d), have been established when d is increased from 500 μm to 800 μm. The outstanding properties suggest that the PrB6 products may be promising emitters in the cold-field-emission cathode application.

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