Title :
Repeatable synthesis of (Bi2Te3)5(TiTe2)4 superlattices using modulated elemental reactants
Author :
Smeller, M.M. ; Harris, Fred R. ; Johnson, David C.
Author_Institution :
Mater. Sci. Inst., Oregon Univ., Eugene, OR, USA
Abstract :
Reliable synthesis techniques are essential for industrial thermoelectric applications. The modulated elemental reactant (MER) method was used to make a set of seven (Bi2Te3)5(TiTe2)4 superlattices, with a superlattice period reproducible to within 0.6%. The electrical properties of these samples were controlled by the distribution and densities of defects. Annealing at 270°C changed the Seebeck coefficient from -60 μV/K to -200 μV/K after 111 hours annealing at 270°C.
Keywords :
Seebeck effect; annealing; bismuth alloys; crystal defects; superlattices; tellurium alloys; titanium alloys; (Bi2Te3)5(TiTe2)4; 111 hour; 270 degC; Seebeck coefficient; annealing; defects; modulated elemental reactants; superlattices; Annealing; Bismuth; Conductivity; Electric variables measurement; Materials reliability; Substrates; Superlattices; Tellurium; Thermoelectricity; X-ray scattering;
Conference_Titel :
Thermoelectrics, 2005. ICT 2005. 24th International Conference on
Print_ISBN :
0-7803-9552-2
DOI :
10.1109/ICT.2005.1519935
