AVS 64th International Symposium & Exhibition
    Sustainability Focus Topic Tuesday Sessions
       Session SU+2D+MS+NS-TuA

Paper SU+2D+MS+NS-TuA12
Thermoelectric Properties of Bi2Te3/Sb2Te3 Thin Films Annealed at Different Temperatures

Tuesday, October 31, 2017, 6:00 pm, Room 5 & 6

Session: Membranes, Thin Films, and Sensors
Presenter: Breonna Rodgers, Alabama A&M University
Authors: S. Budak, Alabama A&M University
Z. Xiao, Alabama A&M University
M. Howard, Alabama A&M University
B. Rodgers, Alabama A&M University
M. Alim, Alabama A&M University
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Thermoelectric devices were prepared from Bi2Te3/Sb2Te3 thin films using DC/RF magnetron sputtering system. Fabricated devices were annealed at different temperatures to form nanostructures in the multilayer thin films to increase both the Seebeck coefficients and electrical conductivity and decrease thermal conductivity. The thermoelectric devices were characterized using Seebeck coefficient measurement system; four probe van der Pauw measurement resistivity system and the laser thermal conductivity system. The surface morphology of the fabricated thermoelectric films is characterized using Scanning Electron Microscope (SEM/EDS).

Acknowledgement

Research was sponsored by NSF with grant numbers NSF-HBCU-RISE-1546965, DOD with grant numbers W911 NF-08-1-0425, and W911NF-12-1-0063, U.S. Department of Energy National Nuclear Security Administration (DOE-NNSA) with grant numbers DE-NA0001896 and DE-NA0002687.