ElDev W1

What do you think of when you heard the word "semiconductor"?

A sketch of Energy Band Diagram of your semiconductor is shown below. In the energy band diagram, the _____ represents the energy levels of electrons when they are chemically bonded.

• conduction band (E_c)

• valence band (E_V)

• Vacuum level

• forbidden level (E_c)

A sketch of Energy Band Diagram of your semiconductor is shown below. The semiconductor is classified as an _____ semiconductor with _____ as the majority charge carrier.

• extrinsic/electron

• instrinsic/electron

• extrinsic/hole

• intrinsic/hole

A sketch of Energy Band Diagram of your semiconductor is shown below. Choose the correct statement (s)!

• This kind of semiconductor can be fabricated by doping Si with P.

• This kind of semiconductor can be fabricated by doping Si with Sb.

• The semiconductor is classified as an intrinsic, n-type semiconductor.

• The semiconductor is classified as an intrinsic, p-type semiconductor.

Choose the correct statement (s)!

• In the energy band diagram, the valence band (E_v) represents the energy levels of electrons when they are chemically bonded.

• Extrinsic semiconductors are made of impurities, most free electrons in it were generated by thermal/optical effects.

• In the energy band diagram, the conduction band (E_c) represents the energy levels of electrons when they are excited and free of the chemical bond.

• Instrinsic semiconductors are made of impurities, most free electrons in it were generated by thermal/optical effects.