The impurity atom added to germanium to make | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) To create an $N-$type semiconductor,a pentavalent impurity (an element from Group $15$ of the periodic table) must be added to an intrinsic semico

Vedclass · Accepted Answer

Arsenic

Vedclass · Answer

(A) To create an $N-$type semiconductor,a pentavalent impurity (an element from Group $15$ of the periodic table) must be added to an intrinsic semiconductor like Germanium $(Ge)$.Arsenic $(As)$ is a pentavalent element,meaning it has $5$ valence electrons.When Arsenic is doped into Germanium,$4$ of its valence electrons form covalent bonds with the surrounding Germanium atoms,and the $5$th electron becomes a free charge carrier,contributing to the $N-$type conductivity.Therefore,Arsenic is the correct impurity.

The impurity atom added to germanium to make it $N-$type semiconductor is

Similar Questions

$P$-type semiconductor has acceptor levels $57 \, meV$ above the valence band. The maximum wavelength of light required to create a hole is (Planck's constant $h = 6.6 \times 10^{-34} \, J-s$)

In a junction diode,the holes are due to

In an $n$-type silicon,which of the following statements is true?

The rate of recombination or generation of charge carriers in a semiconductor is governed by the law$(s)$ of:

Which statement is correct for a $p$-type semiconductor?

Vedclass Test Series

Exam Paper Generator

Online Exam Module