[19p-PA8-1~12] 9.4 Thermoelectric conversion

△ [19p-PA8-11] Evaluation of electronic transport properties in nanocrystalline Bi₂Te₃ thin films with minimum grain size based on nanocrystal structure analysis and first-principles calculation

〇(B)Susumu Yonezawa¹, Yuki Kimura¹, Masayuki Takashiri¹ (1.Tokai Univ.)

Keywords:thermoelectrical materials, Bi2Te3 thin films, first-principles calculation

The grain size, especially the nanosized region, is an important factor for the thermoelectric materials. It is significantly difiicult to fabricate the thermoelectric materials with very small grains which are comparable with the size of unit cell. Therefore, we estimated the electronic transport properties of Bi₂Te₃ thin films with minimum grain size based on experimental results and first-principles calculation.