Fig. 1: Planar f-TEC for hot spot cooling.

a Schematic illustration of planar f-TEC working process for hot spot cooling and the f-TEC structure; (b) zT value @300 K obtained in this work together with reported values of P-type13,35,36,37,38 and N-type10,24,39,40,41 films for comparison; (c)The cooling ability for laser heated hot spot with f-TEC prepared in this work.