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Energy dynamics of solar thermionic power conversion with emitter of graphene

Olawole, C. Olukunle and De, Dilip Kumar and Oyedepo, Sunday Olayinka (2016) Energy dynamics of solar thermionic power conversion with emitter of graphene. In: Carbon Nanotubes, Graphene, and Emerging 2D Materials for Electronic and Photonic Devices IX, 2016, San Diego, California, United States.

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Abstract In this paper we considered in details of the energy exchanges that would take place when concentrated solar energy is focused normally onto a thermionic emitter of area equal to the area of focus with solar energy being incident parallel to the axis of the parabolic mirror. We then, using a simplified version of the equations, compute the power output from the thermionic energy converter with emitters of graphene on silicon carbide, assuming that with the advent of new work function engineering technology the work function of graphene can be modulated from 4.5 eV to 1.5 eV and also with pure monolayer graphene for which a new thermionic emission equation has been discovered by the authors. Our theoretical research shows that graphene being a high temperature material, it is quite possible to practically realize a solar thermionic energy converter with good conversion efficiency using a graphene-on-silicon carbide emitter.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 23 Oct 2018 15:22
Last Modified: 23 Oct 2018 15:22

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