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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

WIDEBAND ABSORPTION ENHANCEMENT ANALYSIS OF DOPED SILICON NANOCONE ARRAYS BASED ON ANISOTROPIC EFFECTIVE MEDIUM APPROXIMATION

Get access (open in a dialog) DOI: 10.1615/IHTC16.rti.022658
pages 8271-8277

要約

Doped Silicon nanocone structure (D-SiNCs) presents the advantage in the infrared region, which could be tuned by controlling the doping concentration, volume filling ratio, thickness and polarizations of incident wave. In the present study, an effective medium analysis combined with multilayer thin film theory considering the anisotropic nature of D-SiNCs is proposed and performed to study their optical properties. The anisotropic effective medium approximation and second-order effective medium theory for both ordinary and extraordinary waves are verified by the reflectance of the free-standing D-SiNCs, comparing with FDTD. Multilayer thin-film optics formulae incorporating the anisotropic wave propagation in uniaxial media were used to calculate the reflectance and absorptance of the D-SiNCs for different polarizations. In addition to modeling the directional radiative properties at various angles of incidence, the absorptance are also calculated to understand the light absorption and to facilitate the optimal design of high-performance D-SiNCs in wavelength selective absorptance, which is important for applications in thermal imaging and thermophotovoltaic devices.