Work

Reflectance spectral studies of spark plasma sintered tungsten carbide pellet

Year: 2024

Type: article

Abstract: We report the first spectral reflectance of tungsten carbide (WC) as potential solar selective absorber. We developed an optical measurement system for visible to mid-infrared spectroscopy, covering the range of 0.1–2.5 eV, to evaluate the solar selectivity. A polycrystalline WC was prepared using spark plasma sintering method. The measured spectral reflectance of WC exhibits a low-energy plasma excitation around 0.6 eV corresponding to the cutoff energy of sunlight, consistent with ab initio calculations, thus making it preferable for the solar selective absorber. We also discuss effects of the sample quality on the spectral reflectance.

Source: Japanese Journal of Applied Physics

DOI: 10.35848/1347-4065/ad9a43

Authors: Toshiharu Chono, Hisashi Tokutomi, Kazuma Nakamura, Koji Miyazaki

Institutions: Kyushu Institute of Technology, Kojundo Chemical Laboratory Co., Ltd. (Japan), Kyushu University

Language: English

Topic: Thermal Radiation and Cooling Technologies

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $2,210