Question

In a p-type semiconductor germanium is doped with:
A) Gallium
B) Aluminum
C) Boron
D) All of the above

Answer 1

Hint
A p-type semiconductor is a type of the semiconductor when the trivalent impurity is added to an intrinsic or pure semiconductor (germanium), then it is said to be p – type semiconductor. Trivalent impurities are also said as the 13th group element of the modern periodic table.

Complete step-by-step answer:
According to the modern periodic table group 14th elements are also known as the semiconductor except for carbon then all the elements are semiconductor.
As we know that the A p-type semiconductor is a type of the semiconductor when the trivalent impurity is added to an intrinsic or pure semiconductor (germanium), then it is said to be p – type semiconductor. Trivalent impurities are also known as the 13th group’s elements of the modern periodic table.
A trivalent impurities can also be defined as the 13th group element which is having the three free electrons in its last shell, like Aluminium, gallium, indium, and titanium. When this element combined with the pure or intrinsic semiconductor leads to the formation of the P – type semiconductor.
Hence according to the option we can use the entire above element.
Hence we can say that the correct option is (D) All of the above.

Note
Modern periodic table was arranged by Henry mosey. The modern periodic table is used to organize all the known elements arranged in the table by increasing by increasing atomic number. Before Henry many scientists gave their way to arrange the modern periodic table like Daltons, Newlands.