Surface conduction electron emission in palladium hydrogenation nanogaps

Li, Yiming; Lo, Hsiang Yu

doi:10.1088/0022-3727/41/8/085301

Cited by 15 publications

(9 citation statements)

References 16 publications

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“…For investigating the field emission properties in SCE, the FDTD-PIC [16][17][18][19] codes are implemented. Starting from a specified initial state, we simulate electrostatic fields as its evolution in time.…”

Section: Structure and Simulationmentioning

confidence: 99%

6.3: Enhancement of Field Emission on Surface Conduction Electron‐Emitters

Cheng¹,

2009

Symp Digest of Tech Papers

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In this work, a novel nanogap with inclined protrusion cathode in palladium strip fabricated by hydrogen absorption under high pressure treatment is optimized for the surface conduction electron emitter. The results of our previous study had shown that the field emission property of the tested structure is superior to conventional one with a coplanar cathode. for a specified emitter material, the surface conduction electron‐emitters (SCE) are further investigated by varying the thickness, tilted angle and gap of palladium (Pd). An optimal field emission efficiency with 80° tilted angle, 120 nm gap and 10 nm thickness of Pd is found for certain designed field emission efficiency. We further find that varying the emitter material work function of the emitter material from 5.12 eV to 3.9 eV will further improve the field emission property due to the increase of the emitted current.

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Section: Structure and Simulationmentioning

confidence: 99%

6.3: Enhancement of Field Emission on Surface Conduction Electron‐Emitters

Cheng¹,

2009

Symp Digest of Tech Papers

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“…However, limited size control issues with these techniques represent a critical disadvantage. Alternatively, there are other novel fabrication techniques, such as those based on a molecular ruler,14–16 chemical deposition,17, 18 tilted‐angle shadow evaporation,19–21 and on the focused ion beam (FIB) method 22–24. Although numerous nanogap fabrication methods have been reported, it remains challenging to manufacture controllable and reliable nanogap electrodes in large numbers.…”

Section: Introductionmentioning

confidence: 99%

Nanogap Electrode Fabrication for a Nanoscale Device by Volume‐Expanding Electrochemical Synthesis

Kim

Moon

Yoo

et al. 2011

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A novel nanogap fabrication method using an electrochemical nanopatterning technique is presented. Electrochemical deposition of platinum ions reduces the microgap size to the sub-50-nm range due to the self-limited volume expansion of the electrodes. Additionally, the low crystallinity of platinum reduces the line edge roughness in the electrodes, whereas the high crystallinity of gold increases it. Current compliance, a buffered resistor, and a symmetric deposition strategy are used to achieve high reliability and practicality of nanogap electrodes. As a possible application, an organic thin-film transistor using the nanogap electrodes is also demonstrated.

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“…Tsai 4,5 proposed the use of focused ion beams (FIBs) to produce nanogaps on a palladium thin film and the use of hydrogen plasma treatment to increase the edge roughness of the nanogap. Lo [7][8][9][10] found that, in terms of the field-emission properties, a nanogap structure with an inclined protrusion cathode in a palladium strip fabricated by hydrogen absorption is superior to a conventional nanogap structure with a coplanar cathode. Wu 11 applied a conductive film structure with a wasp-waisted shape to control the formation positions of fissures.…”

Section: Introductionmentioning

confidence: 99%

Electron Emission Properties of Surface-Conduction Electron Emitters With a PdO-C-PdO Multilayer Conductive Film Deposited by Magnetron Sputtering

Sun

2011

Journal of Elec Materi

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Conductive films are an essential component in surface-conduction electron emitters (SCEs), and they have a major influence on the electron emission properties of SCEs. In this work, a novel PdO-C-PdO multilayer film deposited by magnetron sputtering is proposed as the conductive film in SCEs. Three SCE cathodes with this type of multilayer film were fabricated, together with three other SCE cathodes with a PdO single-layer film used as a reference. For these cathodes, the dependences of the conduction current and the emission current on the device voltage and the anode voltage were measured, and the luminescence patterns were observed after the electroforming and activation processes of the conductive films had occurred. The surface morphologies of the conductive films were analyzed by scanning electron microscopy. The results indicate that the SCEs with the PdO-C-PdO multilayer conductive film have better electron emission properties compared with the SCEs with the PdO single-layer conductive film. For an anode voltage of 2 kV and a device voltage of 14 V, the emission current and the electron emission ratio of the SCEs with the PdO-C-PdO multilayer film can reach 179.5 lA and 2.2&, respectively.

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Surface conduction electron emission in palladium hydrogenation nanogaps

Cited by 15 publications

References 16 publications

6.3: Enhancement of Field Emission on Surface Conduction Electron‐Emitters

6.3: Enhancement of Field Emission on Surface Conduction Electron‐Emitters

Nanogap Electrode Fabrication for a Nanoscale Device by Volume‐Expanding Electrochemical Synthesis

Electron Emission Properties of Surface-Conduction Electron Emitters With a PdO-C-PdO Multilayer Conductive Film Deposited by Magnetron Sputtering

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