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Questions and Answers
What is the purpose of writing the continuity equations for the carrier densities in the neutral zones?
What is the purpose of writing the continuity equations for the carrier densities in the neutral zones?
- To find the breakdown voltage of the PN junction
- To calculate the current density as a function of the external voltage
- To determine the recombination rate of carriers
- To estimate the minority carriers densities in the neutral zones (correct)
What is the effect of the current density being not homogeneous in space on the carrier densities?
What is the effect of the current density being not homogeneous in space on the carrier densities?
- It increases the carrier density in the small volume
- It causes a variation in the carrier density per unit time (correct)
- It decreases the carrier density in the small volume
- It does not affect the carrier density in the small volume
What is the physical meaning of the term $\frac{dn_p}{dt}$ in the continuity equation?
What is the physical meaning of the term $\frac{dn_p}{dt}$ in the continuity equation?
- Rate of change of electron density in the P side (correct)
- Rate of recombination of carriers
- Rate of change of hole density in the N side
- Rate of generation of carriers
What is the role of the lifetime Ï„n (resp. Ï„p) in the continuity equation?
What is the role of the lifetime Ï„n (resp. Ï„p) in the continuity equation?
What is the physical meaning of the term $L_n$ (resp. $L_p$) in the steady-state continuity equation?
What is the physical meaning of the term $L_n$ (resp. $L_p$) in the steady-state continuity equation?
What is the purpose of solving the steady-state continuity equations?
What is the purpose of solving the steady-state continuity equations?
What is the effect of the recombination of carriers on the carrier densities?
What is the effect of the recombination of carriers on the carrier densities?
What is the physical meaning of the term $n_p$ (resp. $p_n$) in the continuity equation?
What is the physical meaning of the term $n_p$ (resp. $p_n$) in the continuity equation?
What is the role of the term $\frac{1}{q} \frac{∂J}{∂x}$ in the continuity equation?
What is the role of the term $\frac{1}{q} \frac{∂J}{∂x}$ in the continuity equation?
What is the purpose of considering an infinitesimally small volume of semiconductor?
What is the purpose of considering an infinitesimally small volume of semiconductor?
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