Influence of Grain Structure Features on the Thermoelectric Properties of Compounds Based on Bismuth Telluride

被引：1
作者：
Ivanov, O. N. [1 ]
Yapryntsev, M. N. [2 ]
Vasil'ev, A. E. [1 ]
Dan'shina, E. P. [1 ]
机构：
[1] Shukhov Belgorod State Technol Univ, Belgorod, Russia
[2] Belgorod State Natl Res Univ, Belgorod, Russia
来源：
GLASS AND CERAMICS | 2022年 / 79卷 / 1-2期
关键词：
bismuth telluride; grain boundaries; thermoelectric properties; texturing; size effects; BI2TE3; ENHANCEMENT;
D O I：
10.1007/s10717-022-00443-y
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An analysis of the specific mechanisms of the influence of the state of the grain structure on the thermoelectric properties (electrical resistivity and total thermal conductivity) of the compound Bi1.9Gd0.1Te3 is presented. The following mechanisms are considered: 1) formation of Te surface vacancies at grain boundaries, which act as donor centers; 2) change in the elemental composition of grains on high-temperature evaporation of Te on heat treatment of the material aimed at obtaining samples with a controlled average grain size.
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页码：3 / 8
页数：6
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