Year: 2013
Type: article
Abstract: We report the first demonstration of optical detection by thermoelectric nanowire junctions. We employed devices composed of bismuth nanowire arrays which are capped with a transparent indium tin oxide electrode. The incident surface features very low optical reflectivity and enhanced light trapping. The unique attributes of the thermoelectric arrays are the combination of strong temporal and optical wavelength dependences of the photocurrent. Under infrared illumination, the signal can be completely described by thermoelectric effects considering cooling rates given by heat diffusion through the array. In addition, under visible illumination, we observe a photovoltaic response.
Source: Applied Physics Letters
DOI: 10.1063/1.4816621
Authors: T. E. Huber, R. Scott, S. Johnson, T. Brower, J. H. Belk, J. H. Hunt
Institutions: Howard University, Boeing (United States)
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Award: G7452299184
OpenAlex ID: W2091385555