Question

p-n junction stabilizes electrons – hole pairs by separating them across the junction

Answer 1

"p-n junction stabilizes electrons – hole pairs by separating them across the junction " is a true statement.

Explanation :

--->PN junction is formed by joining P type and N type semiconductors to achieve the practical utility of both.Here In P type free holes are positively charged and free electrons in N type are negative charged.

--->When a PN Junction is formed electrons from N type moves to P .and Holes near the junction jump from P to N this process creates a region called as space charge region where electrons will be  in P region and holes will be in N region.Movement of some electrons from P to N in the space region and some holes move back from N to P in the space region till equilibrium is attained which constitutes diffusion current.

---->By changing the external applied voltage , junction barrier can be changed . In forward Bias[ Nside is connected to negative terminal of battery and P type to positive terminal., the size of barrier[space charge region] is decreased and in reverse bias the barrier size increases which results in more current[mA] in forward bias while very small current[μA] in reverse bias.