Podcast
Questions and Answers
What is the name of the first unfilled energy band at T=0K?
What is the name of the first unfilled energy band at T=0K?
- Bandgap
- Conduction band (correct)
- Energy bandgap
- Valence band
Which band is the last filled energy band at T=0K?
Which band is the last filled energy band at T=0K?
- Valence band (correct)
- Semiconductors
- Conduction band
- Energy bandgap
What happens to electrons in an insulator at ordinary temperatures?
What happens to electrons in an insulator at ordinary temperatures?
- They reach the conduction band easily
- They move to the energy bandgap
- They behave like conductors
- They stay in the valence band (correct)
How can thermal energy bridge the energy bandgap in semiconductors?
How can thermal energy bridge the energy bandgap in semiconductors?
What type of materials have overlapping bands?
What type of materials have overlapping bands?
Which type of impurity doping can increase conductivity in semiconductors?
Which type of impurity doping can increase conductivity in semiconductors?
In which band do electrons pass to when the energy bandgap is small enough?
In which band do electrons pass to when the energy bandgap is small enough?
What is the term for the first unfilled energy band at T=0K in a material?
What is the term for the first unfilled energy band at T=0K in a material?
In elemental solids with covalent bonding, which band is the last filled energy band at T=0K?
In elemental solids with covalent bonding, which band is the last filled energy band at T=0K?
What happens to electrons in an insulator regarding reaching the conduction band at ordinary temperatures?
What happens to electrons in an insulator regarding reaching the conduction band at ordinary temperatures?
What is the term for the energy bandgap that is small enough for some electrons to pass to the conduction band?
What is the term for the energy bandgap that is small enough for some electrons to pass to the conduction band?
Which process can increase conductivity in semiconductors by bridging the energy gap?
Which process can increase conductivity in semiconductors by bridging the energy gap?
Why is the valence band called 'valence'?
Why is the valence band called 'valence'?
What is one characteristic of conductors regarding electron movement at ordinary temperatures?
What is one characteristic of conductors regarding electron movement at ordinary temperatures?
