thanks for replying!
i've been googling extensively but i can't seem to find anything helpful... been flipping through notes but it doesn't mention spectral linewidth at all :-( sigh.
So I'm doing up a physics report but i got stuck on this question :(
Q: Explain the factors that influence the spectral linewidth of the emission spectrum.
i'm guessing that it has something to do with the types of elements used in doping the semiconductor? but i don't know how the theory part...