Retraction: Journal of Materials Science: Materials in Electronics (2022) 33:26484–26494 https://doi.org/10.1007/s10854-022-09327-x

The authors have retracted this article because they used a technique for extracting the optical properties of thin films that does not account for interference phenomena in the film. The unsuitable methodology affects Figs. 3, 4, 5, 6 and 7. All authors agree to this retraction.