Publication date: 31 December 2015
Source:Thin Solid Films, Volume 597
Author(s): Mickaël Gilliot, Aomar Hadjadj, Jérôme Martin
Thin nano-granular ZnO layers were prepared using a sol–gel synthesis and spin-coating deposition process with a thickness ranging between 20 and 120ϵ ) of the ZnO film was determined from spectroscopic ellipsometry measurements. Up to a critical thickness close to 60ϵ rapidly increases and then slowly tends to values closer to the bulk ZnO material. This trend suggests a drastic change in the film porosity at both sides of this critical thickness, due to the pre-heating and post-crystallization processes, as confirmed by additional characterization of the structure and the morphology of the ZnO films.
Source:Thin Solid Films, Volume 597
Author(s): Mickaël Gilliot, Aomar Hadjadj, Jérôme Martin