Properties of Semiconductors (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Where do semiconductors fit in terms of electrical properties?
Where do semiconductors fit in terms of electrical properties?
Between conductors and insulators
Which semiconductor material is the most widely used?
Which semiconductor material is the most widely used?
Silicon
What is the unit for measuring resistivity?
What is the unit for measuring resistivity?
Ohm-meters ()
What is the energy difference between valence and conduction bands called?
What is the energy difference between valence and conduction bands called?
Band gap
What is the typical band gap range for semiconductors?
What is the typical band gap range for semiconductors?
0.1-4
Why do metals conduct electricity so well?
Why do metals conduct electricity so well?
Valence & conduction bands overlap
How does temperature affect semiconductor conductivity?
How does temperature affect semiconductor conductivity?
Higher temp increases conductivity
What is the purpose of doping semiconductors?
What is the purpose of doping semiconductors?
Control electrical properties
What type of elements are used to create n-type semiconductors?
What type of elements are used to create n-type semiconductors?
Pentavalent (5 outer electrons)
What does the 'n' stand for in n-type semiconductors?
What does the 'n' stand for in n-type semiconductors?
Negative (extra electrons)
Which element is typically used to create p-type semiconductors?
Which element is typically used to create p-type semiconductors?
Boron
What purity level is required for silicon in integrated circuits?
What purity level is required for silicon in integrated circuits?
99.9999999%