engineering recuitment GATE ECE 2023-24 Test Series Electronic Devices PN Junction Contact Potential
An abrupt and uniformly doped p-n junction in equilibrium has:
Na = 1016/cc
Nd = 1015/cc
ni = 1.5 × 1010/cc
xd = 0.97 μm
Dp = 11 cm2/s
Dn = 35 cm2/s
Which of the following statement is/are true?
1
The built-in potential in the depletion layer is 24.5 VT
2
The average diffusion current densities of electrons and holes in the depletion layer are 0.
3
The average diffusion current densities of electrons and holes in the depletion layer are 18.2 A/cm2 and 182 A/cm2 respectively.
4
The electric field at the edge of the depletion region on the p+ side is 0.