abstract

• Long wave infrared imaging systems require small, low cost and low power systems operating at room-temperature. Seebeck nanoantennas are room temperature detectors which generate voltage due to incident electromagnetic radiation, they also provide polarization sensitivity, directivity, small footprint, tunability and the possibility of integration into electronic and photonic circuits. In this work different materials and fabrication processes used in Seebeck bowtie nanoantennas are numerically simulated in order to optimize its response in the long wave infrared region of the electromagnetic spectrum (8-14 μm.) Gold bowtie nanoantennas with thermoelectric connections made of Bi3Te2 and Sb3Te2 showed the highest responsivity values of 9 V/W for gold bowtie nanoantennas on a SiO2 substrate and 240 V/W for gold bowtie free-standing structures. Computer simulations also showed that the thermoelectric response of these detectors add linearly when connecting them in series. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

authors

• González Contreras Francisco Javier
• Peale R.E.

publication date

• 2021-01-01

published in

• Proceedings of SPIE - The International Society for Optical Engineering  Proceedings

keywords

• Infrared Detector; LWIR; Seebeck nanoantennas; Thermoelectric IR detectors Antimony compounds; Bismuth compounds; Gold; Infrared devices; Nanoantennas; Silica; Tellurium compounds; Thermography (imaging); Electromagnetic spectra; Free-standing structures; Long wave infrared regions; Long-wave infrared imaging; Material optimization; Polarization sensitivity; Room temperature detector; Thermoelectric response; Infrared radiation

Digital Object Identifier (DOI)

• 10.1117/12.2591299

PubMed ID

start page

end page

volume

• 11723

issue