Question

Which of the following is trivalent impurity

Answer 1

Answer:

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Explanation:

Trivalent impurity atoms have 3 valence electrons. The various examples of trivalent impurities include Boron (B), Gallium (G), Indium(In), Aluminium(Al). Boron is a substance consisting of atoms which all have the same number of protons.

Answer 2

Trivalent impurity:

• Doping materials with three electrons in the outermost shell of the atom are known as trivalent impurities.
• Doping converts pure semiconductors into the p and n forms of semiconductors.
• The conductivity of these semiconductors is higher than that of pure semiconductors.
• Acceptor impurities are defined as impurities that accept electrons.

Example:

Indium, Gallium, Aluminum, Boron, and other elements.