P2.14: Characterization of the thermionic electron emission properties of nitrogen-incorporated &amp;#x201C;ridged&amp;#x201D; nanodiamond for use in thermal energy conversion

Paxton, William F.; Wisitsoraat, Anurat; Raina, Supil; Davidson, J.L.; Kang, W.P.

doi:10.1109/ivnc.2010.5563152

International Vacuum Nanoelectronics Conference 2010

DOI: 10.1109/ivnc.2010.5563152

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P2.14: Characterization of the thermionic electron emission properties of nitrogen-incorporated “ridged” nanodiamond for use in thermal energy conversion

William F. Paxton

Anurat Wisitsoraat

Supil Raina

et al.

Abstract: The thermal electron emission of "ridged" type nanocrystalline diamond films has been characterized for use in thermal energy conversion via thermionic emission.

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Nanodiamond vacuum field emission device with gate modulated triode characteristics

Hsu

Kang

Raina

et al. 2013

Applied Physics Letters

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A three-electrode nanodiamond vacuum field emission (VFE) device with gate modulated triode characteristics is developed by integrating nanodiamond emitter with self-aligned silicon gate and anode, employing a mold transfer technique in conjunction with chemical vapor deposition of nanodiamond. Triode behavior showing emission current modulation with high current density at low operating voltages is achieved. A systematic analysis based on modified Fowler-Nordheim theory is used to analyze gate modulated VFE characteristics, confirming the triode field emission mechanism and operating principle. The realization of an efficient VFE microtriode has achieved the fundamental step for further development of vacuum integrated microelectronics.

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Nanodiamond vacuum field emission device with gate modulated triode characteristics

Hsu

Kang

Raina

et al. 2013

Applied Physics Letters

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Highly Improved Thermionic Energy Converter

Olawole

Oyedepo

et al. 2019

J. Phys.: Conf. Ser.

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Thermionic energy converter (TEC) has recently received significant attention, for it holds potential for clean energy generation with a very high theoretical conversion efficiency (60%). For the latter to be achieved, some of the key hurdles are to be overcome. This paper discusses all these key hurdles along with modelling of solar energy conversion using a TEC with nano-materials and metals, using the modified Richardson-Dushman equation, which best describes the thermionic emission current density from these materials. Using two scenarios: allowing natural heat radiation from the back surface of the collector and using controlled heat collection from the collector to maintain it at a fixed temperature. We then discuss results of simulation of the conversion efficiency as a function of temperatures of emitter and collector, work functions and Fermi energy of emitter and collector at absolute zero temperature, solar insolation, the radius of parabolic concentrator and emissivity of radiating surfaces. We discuss the impact of neglecting the radiation losses on the efficiency evaluation as has been done by other workers recently. We suggest some innovative ways to reduce significantly the space charge effect to make a solar TEC a reality.

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Review on Thermionic Energy Converters

Leong

Mohamed

2016

IEEE Trans. Electron Devices

136

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P2.14: Characterization of the thermionic electron emission properties of nitrogen-incorporated “ridged” nanodiamond for use in thermal energy conversion

Abstract: The thermal electron emission of "ridged" type nanocrystalline diamond films has been characterized for use in thermal energy conversion via thermionic emission.

Cited by 4 publications

References 4 publications

Nanodiamond vacuum field emission device with gate modulated triode characteristics

Nanodiamond vacuum field emission device with gate modulated triode characteristics

Highly Improved Thermionic Energy Converter

Review on Thermionic Energy Converters

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