Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8012829 | Materials Letters | 2018 | 10 Pages |
Abstract
Submicron crystallites of CuS and Co doped CuS have been prepared by hydrothermal route. The structure of prepared crystallites were found to be hexagonal shape with space group P63/mmc and the size of the crystallites is in the range 89-127â¯nm. The morphology of the prepared CuS is nanoflower and there is no change in the morphology with cobalt doping. The d spacing and the cell parameters of the crystallites is found to be decreasing with doping of cobalt. The samples are pressed into pellets and their thermoelectric properties were investigated. CuS has an exothermic peak at 390â¯K as obtained in Differential Scanning Calorimetry (DSC) analysis so the electrical and thermal properties of all bulk samples were measured from 310â¯K to 370â¯K to avoid the phase change. The pure CuS samples prepared via hydrothermal synthesis reached the highest thermoelectric figure of merit (ZT) of 5.45â¯Ãâ¯10â3 at 362â¯K and for the Cu1.6Co0.4S the ZT value is increased to 8.3â¯Ãâ¯10â3 at 362â¯K.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
P. Maneesha, Anju Paulson, N.A. Muhammed Sabeer, P.P. Pradyumnan,