Spin coating-Co-reduction approach: A general strategy for preparation of oriented chalcogenide thin film on arbitrary substrates

Abstract

A new and general spin coating-co-reduction strategy for synthesis of c-axis oriented (Bi,Sb) 2 (Te,Se) 3 chalcogenide thin films and multilayered structures on different substrates was reported. This method combines spin coating technique and co-reduction chemical reaction processes using commercial nitrates and oxides as raw materials. This simple and reliable method provides a new approach for fabricating chalcogenide semiconductor or semi-metal thin films, and will have wide application potential in opto-electric, thermoelectric, phase-change memory, chemical sensor, and spintronic devices.