Numerical study on tungsten selective radiators with various micro/nano structures

Hitoshi Sai, Yoshiaki Kanamori, Kazuhiro Hane, Hiroo Yugami, Masafumi Yamaguchi

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

7 Citations (Scopus)


To develop microstructured selective radiators for TPV generation, numerical simulations based on the finite-difference time-domain method were carried out to evaluate spectral properties of various types of surface micro/nano structures: two-dimensional surface-relief gratings with various surface structures such as rectangular holes, cylindrical holes, and micro-pyramids. It was shown that cylindrical holes as well as rectangular holes also realize the cutoff effect with different cutoff wavelengths. On the other hand, W gratings with micro-pyramid array showed high emissivity near unity in the near infrared region due to the anti-reflection effect based on sub-wavelength gratings.

Original languageEnglish
Title of host publicationConference Record of the 31st IEEE Photovoltaic Specialists Conference - 2005
Number of pages4
Publication statusPublished - 2005 Nov 30
Event31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States
Duration: 2005 Jan 32005 Jan 7

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371


Other31st IEEE Photovoltaic Specialists Conference - 2005
Country/TerritoryUnited States
CityLake Buena Vista, FL

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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