Physical and numerical investigation of single-layered tungsten gratings for thermophotovoltaic emitters

Nguyen Huu Nghia, Yu Bin Chen, Yu-Lung Lo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A polarization-insensitive thermophotovoltaic emitter which is easily manufactured using microfabrication techniques is optimized based on physical and numerical studies. First, ranges of geometrical dimensions of the emitter based a single-layered tungsten grating are confined with the excitation of surface plasmon polaritons, cavity resonance, and Wood's anomaly at defined wavelengths. Then, a combined numerical scheme including the rigorous coupled-wave analysis and a genetic algorithm is implemented to find the grating's geometry with an objective of maximizing emittance. The results show that the optimized emitter yields the peak emittance of 0.997 and 0.935 at the transverse electric and transverse magnetic polarizations, respectively. The physical mechanism of the enhanced emittance is also confirmed by patterns of electromagnetic fields and Poynting vectors using the finite difference time-domain method. Overall, the results presented in this study show that the single-layered grating provides a very simple and ideal solution for thermophotovoltaic applications.

Original languageEnglish
Title of host publication2012 7th International Microsystems, Packaging, Assembly and Circuits Technology Conference, IMPACT 2012 - Proceedings
Pages400-403
Number of pages4
DOIs
Publication statusPublished - 2012
Event2012 7th International Microsystems, Packaging, Assembly and Circuits Technology Conference, IMPACT 2012 - Taipei, Taiwan
Duration: 2012 Oct 242012 Oct 26

Other

Other2012 7th International Microsystems, Packaging, Assembly and Circuits Technology Conference, IMPACT 2012
CountryTaiwan
CityTaipei
Period12-10-2412-10-26

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All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Nghia, N. H., Chen, Y. B., & Lo, Y-L. (2012). Physical and numerical investigation of single-layered tungsten gratings for thermophotovoltaic emitters. In 2012 7th International Microsystems, Packaging, Assembly and Circuits Technology Conference, IMPACT 2012 - Proceedings (pp. 400-403). [6420295] https://doi.org/10.1109/IMPACT.2012.6420295