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Interpreting UV absorption spectra

  1. Apr 9, 2004 #1
    hello all

    i'm investigating the band gap of certain nanocrystallites in the powder form, using a Shimadzu spectrometer with the powder dissolved in ethanol. The spectra, however, come with several peaks in addition to the expected peak for absorption. This is not unexpected as transitions to defects and impurities should arise. What i don't understand is that the literature only reports smooth curves for similar work...!

    is it that the other peaks are removed, or a non-linear regression is used to analyze the data?

    please help?

  2. jcsd
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