Thermophotovoltaic generation with selective radiators based on tungsten surface gratings

Hitoshi Sai; Hiroo Yugami

doi:10.1063/1.1807031

Thermophotovoltaic generation with selective radiators based on tungsten surface gratings

Hitoshi Sai, Hiroo Yugami

ENG - Mechanical Systems Engineering

Toyota Technological Institute

Research output: Contribution to journal › Article › peer-review

158 Citations (Scopus)

Abstract

Two-dimensional surface-relief gratings with a period of 1.0-0.2 μm composed of rectangular microcavities were fabricated on single crystalline W substrates to develop spectrally selective radiators for thermophotovoltaic generation. The radiators displayed strong emission in the near-infrared region where narrow-band-gap photovoltaic cells could convert photons into electricity. The enhancement of thermal emission was attributed to the microcavity effect. Power generation tests were carried out and the W gratings showed more than two times higher generation efficiency, compared to a SiC radiator. The results showed that the microstructured W radiators behave as good selective radiator, with both high efficiency and high power density.

Original language	English
Pages (from-to)	3399-3401
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	16
DOIs	https://doi.org/10.1063/1.1807031
Publication status	Published - 2004 Oct 18

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title = "Thermophotovoltaic generation with selective radiators based on tungsten surface gratings",

abstract = "Two-dimensional surface-relief gratings with a period of 1.0-0.2 μm composed of rectangular microcavities were fabricated on single crystalline W substrates to develop spectrally selective radiators for thermophotovoltaic generation. The radiators displayed strong emission in the near-infrared region where narrow-band-gap photovoltaic cells could convert photons into electricity. The enhancement of thermal emission was attributed to the microcavity effect. Power generation tests were carried out and the W gratings showed more than two times higher generation efficiency, compared to a SiC radiator. The results showed that the microstructured W radiators behave as good selective radiator, with both high efficiency and high power density.",

author = "Hitoshi Sai and Hiroo Yugami",

note = "Funding Information: The authors appreciate the monetary support of the Ministry of Education, Science, Sports and Culture, Japan. The authors are also grateful for the technical support of the Venture Business Laboratory at Tohoku University.",

year = "2004",

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doi = "10.1063/1.1807031",

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TY - JOUR

T1 - Thermophotovoltaic generation with selective radiators based on tungsten surface gratings

AU - Sai, Hitoshi

AU - Yugami, Hiroo

N1 - Funding Information: The authors appreciate the monetary support of the Ministry of Education, Science, Sports and Culture, Japan. The authors are also grateful for the technical support of the Venture Business Laboratory at Tohoku University.

PY - 2004/10/18

Y1 - 2004/10/18

N2 - Two-dimensional surface-relief gratings with a period of 1.0-0.2 μm composed of rectangular microcavities were fabricated on single crystalline W substrates to develop spectrally selective radiators for thermophotovoltaic generation. The radiators displayed strong emission in the near-infrared region where narrow-band-gap photovoltaic cells could convert photons into electricity. The enhancement of thermal emission was attributed to the microcavity effect. Power generation tests were carried out and the W gratings showed more than two times higher generation efficiency, compared to a SiC radiator. The results showed that the microstructured W radiators behave as good selective radiator, with both high efficiency and high power density.

AB - Two-dimensional surface-relief gratings with a period of 1.0-0.2 μm composed of rectangular microcavities were fabricated on single crystalline W substrates to develop spectrally selective radiators for thermophotovoltaic generation. The radiators displayed strong emission in the near-infrared region where narrow-band-gap photovoltaic cells could convert photons into electricity. The enhancement of thermal emission was attributed to the microcavity effect. Power generation tests were carried out and the W gratings showed more than two times higher generation efficiency, compared to a SiC radiator. The results showed that the microstructured W radiators behave as good selective radiator, with both high efficiency and high power density.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Thermophotovoltaic generation with selective radiators based on tungsten surface gratings

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