14 Questions
What is the name of the first unfilled energy band at T=0K?
Conduction band
Which band is the last filled energy band at T=0K?
Valence band
What happens to electrons in an insulator at ordinary temperatures?
They stay in the valence band
How can thermal energy bridge the energy bandgap in semiconductors?
By overcoming the energy barrier
What type of materials have overlapping bands?
Conductors
Which type of impurity doping can increase conductivity in semiconductors?
P, B, As doping
In which band do electrons pass to when the energy bandgap is small enough?
Conduction band
What is the term for the first unfilled energy band at T=0K in a material?
Conduction band
In elemental solids with covalent bonding, which band is the last filled energy band at T=0K?
Valence band
What happens to electrons in an insulator regarding reaching the conduction band at ordinary temperatures?
Electrons cannot reach the conduction band
What is the term for the energy bandgap that is small enough for some electrons to pass to the conduction band?
Semiconductor
Which process can increase conductivity in semiconductors by bridging the energy gap?
Impurity doping
Why is the valence band called 'valence'?
Because it contains valence electrons responsible for bonding
What is one characteristic of conductors regarding electron movement at ordinary temperatures?
Electrons move freely in the conduction band
Explore the electronic properties of solids, including topics such as electrical conduction (conducting, semiconducting, insulating, superconducting), optical properties (absorption, emission, modification of light), and magnetic properties (paramagnetism, ferromagnetism, antiferromagnetism, diamagnetism, ferrimagnetism). Understand the fulfillment by the behavior of electrons in various materials.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
