Publication date: Available online 6 January 2017
Source:Thin Solid Films
Author(s): Ming Tan, Xiuzhen Wang, Yuan Deng, Yanming Hao
In this paper, it was found that unit cell volume and lattice parameters can importantly influence transport properties of Sb2 Te3 nanorod array. Here the p -Sb2 Te3 nanorod array has been successfully fabricated by the simple magnetron co-sputtering method. The structure and thermoelectric transport properties of Sb2 Te3 nanorod array are investigated by means of X-ray diffraction and thermoelectric measurements. The results show that the unit cell volume v and the lattice parameters a and c of Sb2 Te3 nanorod array is a function of temperature. The thermal expansion coefficients along the (0 1 5) and (1 0 10) crystal faces are different in Sb2 Te3 nanorod array. There exist the highest values of v , a and c at 250σ ) and Seebeck coefficient (S ), and hence could be considered as one of origins of the experimental observations. For the volume maximum expansion by 0.62% in Sb2 Te3 nanorod array, a concomitant maximum increase in σ and S by 1.9
Source:Thin Solid Films
Author(s): Ming Tan, Xiuzhen Wang, Yuan Deng, Yanming Hao