Conducting ZnO thin films with an unusual morphology: Large flat microcrystals with (0Â 0Â 0Â 1) facets perpendicular to the plane by chemical bath deposition

► Large flat ZnO microcrystals with (0 0 0 1) facets perpendicular to the plane. ► Modified growth of ZnO in the presence of gelatine. ► ZnO platelets with an optical efficiency in excess of 10%.