Synthesis of textured discontinuous-nanoisland Ca₃Co₄O₉ thin films

Controllable engineering of the nanoporosity in layered Ca₃Co₄O₉ remains a challenge. Here, we show the synthesis of discontinuous films with islands of highly textured Ca₃Co₄O₉, effectively constituting distributed nanoparticles with controlled porosity and morphology. These discontinuously dispersed textured Ca₃Co₄O₉ nanoparticles may be a candidate for hybrid thermoelectrics.