00:01
Quantum dots are nanostructures that can be approximated by the three -dimensional infinite square well problem.
00:10
And so their energy levels look like the formula that we're familiar with, where nx, n y, and nc are quantum.
00:18
And we want to know that if we make the dots smaller, so if we decrease l, which is each of these side lengths, how will the wavelength of the emitted light change? change.
00:32
Quantum dots emit light when i draw the energy landscape, and here are the allowed energy levels, say, when a particle falls from a higher energy state to a lower energy state, we get light emitted, and we want to know how changing l will change the wavelength of that emitted light.
00:54
Well, if we decrease l, we see that e will increase because they are inversely proportionate.
01:02
Or e is inversely related to the square of l.
01:05
So as we decrease l, e increases...