Multisectional thermoelement for generators working at the temperatures up to 1200 K

Construction and technology of multisectional thermoelements for generators working at the temperatures up to 1200 K were developed. Semiconductor materials with increased dimensionless thermoelectric figure of merit (ZT up to 1.4) were proposed for the fabrication of thermoelement sections. Complex investigations of thermal and electrical parameters for thermoelectric materials were carried out. Technology of contact systems for each thermoelement section was developed. These systems plays the role of diffusion barrier, and provide Ohmic contacts to the thermoelectric materials with the resistivity 10^-9 Ohm-m². Contact systems also serve as commutation layers, and have adhesion strength not less than 100-10⁵ Pa. Software for the modeling of the construction and calculation of the parameters for the thermoelements and thermoelectric devices on their basis was developed. Hardware-software measuring complexes for the investigation of thermal and electrical parameters for thermoelectric materials and structures were designed.