Question:

If $Si$ is doped with $B$,

Updated On: Jul 28, 2022
  • n-type semiconductor is formed
  • p-type semiconductor is formed
  • insulator is formed
  • polymer is formed
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The Correct Option is B

Solution and Explanation

Silicon belongs to group 14, it is doped with a group 13 element like B which contains only three valence electrons. The place where the fourth valence e is missing is called electron hole. Under the electric field, e holes moves toward the negatively charged plate, which implies that e holes are positively charged, thus it is a p-type semiconductor.
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Concepts Used:

Solid State

Solids are substances that are featured by a definite shape, volume, and high density. In the solid-state, the composed particles are arranged in several manners. Solid-state, in simple terms, means "no moving parts." Thus solid-state electronic devices are the ones inclusive of solid components that don’t change their position. Solid is a state of matter where the composed particles are arranged close to each other. The composed particles can be either atoms, molecules, or ions. 

Solid State

Types of Solids:

Based on the nature of the order that is present in the arrangement of their constituent particles solids can be divided into two types;

  • Amorphous solids behave the same as super cool liquids due to the arrangement of constituent particles in short-range order. They are isotropic and have a broad melting point (range is about greater than 5°C).
  • Crystalline solids have a fixed shape and the constituent particles are arranged in a long-range order.