An accurate method to determine the band gap

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The discussion centers on determining the band gap of semiconductors, particularly through spectroscopy methods. Participants express confusion about how spectroscopy accurately measures the band gap and seek clarification on its workings. Key concepts include the relationship between photon wavelength and energy, as well as the specified energy levels of electrons in atoms. Understanding these principles is essential for grasping how band gaps are determined. The conversation emphasizes the need for a clearer explanation of the spectroscopy process in this context.
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Summary:: What is an accurate method to determine the band gap?

What is an accurate method to determine the band gap?
 
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Spectroscopy?
The band gap of what?
 
Baluncore said:
Spectroscopy?
The band gap of what?
1. I have already read the method in which spectroscopy is performed. But I did not understand at all. If this method is accurate, how does it work?
2. Semiconductor band gap
 
I have moved the thread to the homework forum.
 

Thread 'Help needed with Elliptic Integrals'

I want to find the solution to the integral ##\theta = \int_0^{\theta}\frac{du}{\sqrt{(c-u^2 +2u^3)}}## I can see that ##\frac{d^2u}{d\theta^2} = A +Bu+Cu^2## is a Weierstrass elliptic function, which can be generated from ##\Large(\normalsize\frac{du}{d\theta}\Large)\normalsize^2 = c-u^2 +2u^3## (A = 0, B=-1, C=3) So does this make my integral an elliptic integral? I haven't been able to find a table of integrals anywhere which contains an integral of this form so I'm a bit stuck. TerryW
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