Physics, asked by subham241verma, 1 year ago

Charge density as a function of position is constant across a p-n junction, true or false

Answers

Answered by abhi178
0
answer : true,

explanation : charge density as a function of position is given by, \rho=(p-n+N^+_d-N^-_a)\cong q(N^+_d-N^-_a)

for -x_p < x < x_n

where it is assumed that no free carriers are present within the depletion region. For an abrupt p-n diode with doping densities, Na and Nd, the charge density is then given by:

\rho(x)=0\\\\\rho(x)=-qN_a\\\\\rho(x)=qN_d\\\\\rho(x)=0

see graph, here it is clear that, Charge density as a function of position is constant across a p-n junction.
Attachments:
Similar questions