1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Calculating Absorption Coefficient

  1. May 20, 2012 #1
    I am currently trying to graph the absorption coefficient of Copper tetra-tert butyl phthlocyanine. I have the extinction coefficient vs wavelength graph and refraction vs wavelength graph however I don't know how to use these to graph absorption coefficient.



    E(eV)=1242.4/λ

    absorption coef. = A* √(hv-Eg)
    h = planks cons.
    v = freq. of electron
    Eg = band gap
    A* is a certain frequency-independent constant, with formula above????

    a' = (4∏K)/λo
    k = extinction coef.



    absorption coef. = A* √(E(eV)-Eg)


    Not a clue....
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted