How can I determine the band gap of a crystalline alumina thin film from the reflectance spectrum? Is Tauc's method also useful in this case?

I'm trying to calculate the band gap of two samples of Al2O3: an amorphous and a crystalline. I've read that Tauc's plot method is employed to determine the band gap of amorphous semiconductors,...

28 July 2017 9,709 3 View