稳定立方相结构的n型无铅AgBiSe2基热电材料

王姝灵, 蒋蒙, 王连军, 江莞

n-Type Pb-free AgBiSe2 Based Thermoelectric Materials with Stable Cubic Phase Structure

WANG Shuling, JIANG Meng, WANG Lianjun, JIANG Wan

图1 样品(AgBiSe2)1-x(SnTe)x的物相组成

Fig. 1 Phase composition of (AgBiSe2)1-x(SnTe)x samples (a) XRD patterns of (AgBiSe2)1-x(SnTe)x powder samples at room temperature and their amplification around 2θ=44°; (b) Lattice constant a varied with SnTe content x with the dotted line showing the best linear fitting; (c) Crystal structure of cubic (AgBiSe2)1-x(SnTe)x; (d) Differential scanning calorimeter (DSC) heat flow curves from 300 K to 750 K