So, non-equillibrium steady state for RC circuit is a voltage applied which has reached a steady state of parameters(voltage/current). An equillibrium state is no voltage applied. In terms of semiconductors, steady state non-equillibrium is a fixed temperature whereas non-equillibrium is a changing temperature. So, is euillibrium in semiconductors - 0K temperature. Kindly correct.
np = ni2 at any fixed temperature. If np != ni2 , this means the temperature is not fixed or non-equillibrum steady state means temperature is changing?
Hi, your videos are excellent. What software do you use to make them? And what kind of tablet do you have for the handwriting? I've noticed you can erase the later...without erasing the background
sorry for the very late reply. The software is that used by the NPTEL team (I do not know what the software is). I have used power point slides and written over them.
sorry for the late reply - an understatement. thermal equilibrium is the condition where every little event that is going on is completely balanced by an opposing event - essentially one cant extract work from the system. In steady state the net time derivative of all events is zero.
@@sanjivsambandan5157 sir initially we made the approximation that emission and capture rate in quasi equilibrium is same as that of equilibrium and rest all the quantities Nt, nt, pt, n, p change in quasi equilibrium. Then after some time while writing the differential equation in non equilibrium steady state you told that for R-G based process net dn/dt and dp/dt is 0 but individual process may not be zero but they balance each other as nt and pt are time invariant in steady state..So can we conclude that in transient phase nt, pt are dynamic but they become static at steady state??
