[19a-A33-1~11] CS.4 Code-sharing Session of 3.10 & 3.11

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[19a-A33-1] Enhancing thermal radiation by thermal extraction of silicon micropyramids

〇(M2)Ryugo Hosokawa^1,2, Etsuko Shimada¹, Satoshi Ishii^1,2 (1.NIMS, 2.Univ. of Tsukuba)

Keywords:

thermal radiation,radiative cooling,nanophotonics

Thermal radiation enhancement by thermal radiation extraction can be achieved by covering a thermal radiation surface with a hemisphere made of a material with a high refractive index, however, this method requires a hemisphere that is much higher than the thermal radiation surface. In this study, we investigate numerically and experimentally whether micropyramids fabricated on a silicon surface having a high refractive index in the mid-infrared can be used as thin out-coupling structures. The results infer that thermal radiation enhancement by thermal radiation extraction is possible even though the height of the silicon pyramid is only a few microns.