Hybrid-Halide Perovskite Thin Film Growth for Thermoelectric Applications

Thermoelectric effect can convert thermal energy into electricity without any moving parts or vibrations in light or dark. These can be promising advantages to develop sustainable energy source for internet of things devices. In this regards, thin films of hybrid-halide perovskites, methylamonium tin iodide, were fabricated by spin coating technique on a glass substrate at different annealing times. Thin films were structurally and chemically characterized by x-ray diffraction pattern and a scanning electron microscope. Thermoelectric parameters were measured near room temperature. During optimization, thin films annealed for 5 min at 100°C shows the high performance with electrical conductivity 3.56 S/cm, Seebeck coefficient 66.03 μV/K and power factor of 1.55 μW/m K² at 50°C. Thermoelectric performance from these hybrid-halide perovskite will help for further development of direct thermal energy harvesting devices near room temperature.