Thermoelectric Properties of Silver Antimonate with Mixed Valency of Antimony  

作　　者：Kensuke Ozawa Hirofumi Kakemoto Hiroshi Irie 

机构地区：[1]Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan [2]Clean Energy Research Center, University of Yamanashi, Yamanashi, Japan

出　　处：《Journal of Materials Science and Chemical Engineering》2017年第1期121-128,共8页材料科学与化学工程（英文）

摘　　要：Silver (Ag) and silver antimonate (AgSbO3) composites with different amounts of Sb3+ were synthesized by normal sintering with the aim of realizing a thermoelectric material. The electrical conductivity (σ) increased in the sample containing larger amount of Sb3+, whereas Seebeck coefficient (S) decreased. Producing Sb3+ caused the generation of oxygen vacancies in the material, and thus the corresponding donor levels are created in the bandgap, providing more conduction electrons. The conductive Ag particles would contribute to the conduction path as bypasses for carrier transport. The thermal conductivity (κ) was slightly lower in the presence of Ag defects in AgSbO3.Silver (Ag) and silver antimonate (AgSbO3) composites with different amounts of Sb3+ were synthesized by normal sintering with the aim of realizing a thermoelectric material. The electrical conductivity (σ) increased in the sample containing larger amount of Sb3+, whereas Seebeck coefficient (S) decreased. Producing Sb3+ caused the generation of oxygen vacancies in the material, and thus the corresponding donor levels are created in the bandgap, providing more conduction electrons. The conductive Ag particles would contribute to the conduction path as bypasses for carrier transport. The thermal conductivity (κ) was slightly lower in the presence of Ag defects in AgSbO3.

关 键 词：THERMOELECTRIC Material SILVER ANTIMONATE SEEBECK Coefficient Electrical CONDUCTIVITY Thermal CONDUCTIVITY 

分 类 号：TB3[一般工业技术—材料科学与工程]