Ostrolenk, Faber, Gerb & Soffen, LLP
Thermo-electric material having mean crystal grain diameter nor greater than 50 microns and mean aspect ratio between 1 and 3 for large figure of merit and thermo-electric element using the same
 Thermo-electric material has a composition containing at least one first element selected from the group consisting of Bi and Sb and at least one second element selected from the group consisting of Te and Se, and the crystal grains of the thermo-electric material have a mean crystal grain diameter equal to or less than 50 microns and a mean aspect ratio between 1 and 3 so as to achieve a large figure of merit equal to or greater than 3.4.times.10.sup.-3 /.degree.K. 
Yamaha Corporation
H H
H01L H01C
inventional inventional
Hiroyuki Toshiharu Yuma
Yamashita Hoshi Horio