Solid State Communications ( IF 2.1 ) Pub Date : 2023-03-02 , DOI: 10.1016/j.ssc.2023.115123 Min Jin , Xinyu Lu , Linlin Guo , Xinyu Lu , Feng He , Xudong Bai , Rongbin Li , Siqi Lin
Recently, the discovery of ductility inorganic semiconductors Ag2S-based alloys have drawn significant interest in hetero-shaped thermoelectric applications. In this work, Ag2S0.7Te0.3 inorganic thermoelectric compound was prepared using the zone melting technique. The crystal structure of Ag2S0.7Te0.3 is similar to that of the cubic-structured Ag2S compound, in which S and Te atoms are randomly occupied at the anionic sites. The observed high hall carrier mobility of ∼410 cm2V−1s−1 and intrinsic low lattice thermal conductivity of ∼0.2 Wm−1K−1 lead to a maximum zT of 0.30 at 600 K for Ag2S0.7Te0.3. In addition, its mechanical properties including microhardness Hv and fracture toughness Kc are measured, showing great potential for thermoelectric application.
中文翻译:
区熔法制备韧性 Ag2S0.7Te0.3 的热电性能
最近,延展性无机半导体 Ag 2 S 基合金的发现引起了人们对异形热电应用的极大兴趣。在这项工作中,Ag 2 S 0.7 Te 0.3无机热电化合物使用区域熔化技术制备。Ag 2 S 0.7 Te 0.3的晶体结构类似于立方结构的Ag 2 S化合物,其中S和Te原子随机占据阴离子位置。观察到~410 cm 2 V -1 s -1的高霍尔载流子迁移率和~0.2 Wm -1的本征低晶格热导率K -1导致Ag 2 S 0.7 Te 0.3在 600 K 时的最大zT为 0.30 。此外,还测量了其显微硬度H v和断裂韧性K c 等机械性能,显示出巨大的热电应用潜力。