Abstract:
A method for bandgap energy determination using di use re ection is presented
and compared to the traditional integrating sphere method. We have found the
bandgap energies of ZnO, TiO₂, Cu₂O, Si, SnZrS₃, SnZrSe₃, Sn₂S₃, and BiCuOSe
powders with both methods and found they agree within 0.03 eV. We have
measured scattering from powder material in the infrared region of the spectrum
with a linear wavelength dependence. We have measured optical bowing of the
bandgap energies of the SnZrS[subscript 3-x]Se[subscript x] system. We also describe in depth the Ocean
Optics spectrometer and its components.
