Shown below is the optical absorption spectra for a material
wavenumber=9.1*10e5
Calculate the bandgap of this material. (Express your answer in eV)
I'm calculate 1.13eV, but next question I don't know answer: This material is a(an)
metal, ionic solid , insulation or semiconductar. because waveleignt absorbtion is 1098nm, it,s very much for metal.