Measurement of optical bandgap energies of semiconductors Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/79408035r

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  • 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.
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