Nanostructured thin film–based near-infrared tunable perfect absorber using phase-change material

Hasan Kocer

doi:10.1117/1.JNP.9.093597

20 January 2015 Nanostructured thin film–based near-infrared tunable perfect absorber using phase-change material

Hasan Kocer

Author Affiliations +

Journal of Nanophotonics, Vol. 9, Issue 1, 093597 (January 2015). https://doi.org/10.1117/1.JNP.9.093597

Abstract

Nanostructured thin film absorbers embedded with phase-change thermochromic material can provide a large level of absorption tunability in the near-infrared region. Vanadium dioxide was employed as the phase-change material in the designed structures. The optical absorption properties of the designed structures with respect to the geometric and material parameters were systematically investigated using finite-difference time-domain computations. Absorption level of the resonance wavelength in the near-IR region was tuned from the perfect absorption level to a low level (17%) with a high positive dynamic range of near-infrared absorption intensity tunability (83%). Due to the phase transition of vanadium dioxide, the resonance at the near-infrared region is being turned on and turned off actively and reversibly under the thermal bias, thereby rendering these nanostructures suitable for infrared camouflage, emitters, and sensors.

Citation Download Citation

Hasan Kocer "Nanostructured thin film–based near-infrared tunable perfect absorber using phase-change material," Journal of Nanophotonics 9(1), 093597 (20 January 2015). https://doi.org/10.1117/1.JNP.9.093597

Published: 20 January 2015

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