Figure 2: Optical properties of ultrathin planar absorbers based on small band gap semiconductors. | Scientific Reports

Figure 2: Optical properties of ultrathin planar absorbers based on small band gap semiconductors.

From: New Insight into the Angle Insensitivity of Ultrathin Planar Optical Absorbers for Broadband Solar Energy Harvesting

Figure 2

(a) Calculated and (c) measured angular reflectivities of the 18 nm Ge/Ag structure for TE polarization and the (b) calculated and (d) measured results for TM polarization. Calculated angular reflectivities of 37 nm Ge/perfect electric conductor structure for (e) TE and (f) TM polarization.

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