Synthesis and Characterization of Tungsten Suboxide W(n)O(3n−1) Nanotiles

W(n)O(3n−1) nanotiles, with multiple stoichiometries within one nanotile, were synthesized via the chemical vapour transport method. They grow along the [010] crystallographic axis, with the thickness ranging from a few tens to a few hundreds of nm, with the lateral size up to several µm. Distinct surface corrugations, up to a few 10 nm deep appear during growth. The {102}(r) crystallographic shear planes indicate the W(n)O(3n−1) stoichiometries. Within a single nanotile, six stoichiometries were detected, namely W(16)O(47) (WO(2.938)), W(15)O(44) (WO(2.933)), W(14)O(41) (WO(2.928)), W(13)O(38) (WO(2.923)), W(12)O(35) (WO(2.917)), and W(11)O(32) (WO(2.909)), with the last three never being reported before. The existence of oxygen vacancies within the crystallographic shear planes resulted in the observed non-zero density of states at the Fermi energy.