Spectral and thermal properties of tungsten selective emitters with rectangular microcavities for thermophotovoltaic generations

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

Abstract

Spectral properties of 2D W surface gratings are investigated by numerical calculations based on rigorous coupled-wave analysis to obtain a good spectral selectivity enough to use as a selective emitter for thermophotovoltaic generations. To demonstrate the calculated results, a 2D grating with 1.0 μn periodicity composed of rectangular microcavities is fabricated on a single crystalline W substrate by electron beam lithography and fast atom beam etching techniques. This grating shows high emissivity in the NIR region corresponding to the spectral response of GaSb PV cells. It is also found that spectral emissivity of emitters is considerably dependent on temperature. A theoretical analysis is conducted to evaluate the temperature dependence of spectral emissivity of metallic microstructured selective emitters in the frame of the Drude theory.

Original languageEnglish
Title of host publicationProceddings of the 3rd World Conference on Photovoltaic Energy Conversion
EditorsK. Kurokawa, L.L. Kazmerski, B. McNeils, M. Yamaguchi, C. Wronski
Pages208-211
Number of pages4
Publication statusPublished - 2003 Dec 1
EventProceddings of the 3rd World Conference on Photovoltaic Energy Conversion - Osaka, Japan
Duration: 2003 May 112003 May 18

Publication series

NameProceedings of the 3rd World Conference on Photovoltaic Energy Conversion
VolumeA

Other

OtherProceddings of the 3rd World Conference on Photovoltaic Energy Conversion
CountryJapan
CityOsaka
Period03/5/1103/5/18

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Sai, H., Kanamori, Y., & Yugami, H. (2003). Spectral and thermal properties of tungsten selective emitters with rectangular microcavities for thermophotovoltaic generations. In K. Kurokawa, L. L. Kazmerski, B. McNeils, M. Yamaguchi, & C. Wronski (Eds.), Proceddings of the 3rd World Conference on Photovoltaic Energy Conversion (pp. 208-211). (Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion; Vol. A).