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Explain, with an example, the term semi-conductor. - Leaving Cert Engineering - Question k - 2019
Question k
Explain, with an example, the term semi-conductor.
Worked Solution & Example Answer:Explain, with an example, the term semi-conductor. - Leaving Cert Engineering - Question k - 2019
Step 1
Explain the term semi-conductor
Answer
A semi-conductor is a type of material that exhibits electrical conductivity which is intermediate between that of conductors and insulators. This means that, while semi-conductors can conduct electricity, they do so less efficiently than metals, and more efficiently than insulators. The conductivity of semi-conductors can be manipulated by adding impurities, a process known as doping. This makes them crucial in various electronic applications.
Step 2
Provide an example of a semi-conductor
Answer
Common examples of semi-conductors include silicon (Si) and germanium (Ge). Silicon is extensively used in the manufacturing of electronic devices such as diodes and transistors due to its favorable electrical properties. For instance, in a silicon-based diode, the doping process allows the material to control the flow of electric current, functioning effectively in electronic circuits.