Fun things to do between now and Thursday:
1) Read about "transport". J = sigma E, sigma =n e mu, mu =ne^2 tau/m* (whew)
2) read about the other kind of transport: diffusion... related to dn(x)/dx (i.e. density gradients)
3) reexamine the n(x), rho(x) calculations. Does our approximation get better or worse as T gets lower?
4) find the depletion approx equilibrium x_0's for an p-n junction with 10^16 cm-3 acceptor doping on the left and 10^17 donor doping on the right? Graph Ec(x) for that...
5) if this is the 4th week, then you might want to be think about preparing for your upcoming take home and in-class midterms. (10 week qtr, "mid term"=5th week right?)
6) other suggestions of things to do or study that relate are welcome
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The direction we're heading seems fine with me - we're heading towards working on transistors, right? It might be fun/enlightening to check out data/diagrams commonly used in industry - that would be interesting to me even if we didn't go into much detail.
ReplyDeleteIt might be fun to mine the labs for cool posters (like the one with detectors used for different regions of the EM spectrum), and just geek out and try to tie it all together...
Or maybe we could visit a lab that has software that maps out band edges or free-energies of surfaces or something.
I would be interested in discussing these same issues (pn junctions?) under the quantum confinement paradigm (if that even makes sense).