Surface microstructured selective emitters for TPV systems

Hitoshi Sai, Hiroo Yuqami, Yasuhiro Akiyama, Yoshiaki Kanamori, Kazuhiro Hane

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)


Surface microstructured selective emitters for thermo-photovoltaic generators are fabricated with lithography and Si anisotropic etching techniques. Two-dimensional series of reverse-pyramid cavities are fabricated on the surface with the structural periods of 1.5 and 2.0 μm. Thermal radiation spectra of the emitters are measured at high temperatures and selective emission due to the surface microstructures is clearly observed. Numerical calculations based on rigorous coupled-wave analysis (RCWA) are also performed to predict spectral properties of the emitters. Experimentally observed emission peaks are well reproduced by the calculation. It is also expected from the calculation that the selective emission due to these microstructures will show little directionality. An evaluation of selective emission efficiency shows that microstructured selective emitters are effective to improve efficiencies of TPV generation systems.

Original languageEnglish
Title of host publicationConference Record of the 28th IEEE Photovoltaic Specialists Conference - 2000
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)0780357728
Publication statusPublished - 2000
Event28th IEEE Photovoltaic Specialists Conference, PVSC 2000 - Anchorage, United States
Duration: 2000 Sept 152000 Sept 22

Publication series

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


Conference28th IEEE Photovoltaic Specialists Conference, PVSC 2000
Country/TerritoryUnited States


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