Friday, April 3, 2015

quantum mechanics - Absorption Spectrum


I just learnt what absorption and emission spectrum are. And our teacher introduced us to what Quantum Dots are. And showed us their absorption and emission spectra. And they look something like this enter image description here


I understand that the peaks of the spectra is supposed to match the transition energy in the QD. But why does the absorbance increase as the wavelength decreases? I am not aware of any QD transition energy at that wavelength. And this seems to be true for all the QD spectra I googled. Is it dependent on other substances in the solution or the film?



Please correct if I am mistaken.




-

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...

  • homework and exercises - Parallel or series connection?
    Are C1, C2 and C3 connected in parallel, or C2, C3 in parallel and C1 in series with C23? Btw it appeared as a question in the basic physics...
  • IQ test sample patterns
    I was solving the sample problems for my school's IQ society and there are some I don't get. Since all I get is a final score, I wan...
  • A real star riddle
    500 are at my end, 500 are at my start, but at my heart there are only 5. The first letter and the first number make me complete: Some consi...