Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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We have valence electrons and conduction electrons in a semiconductor. Do we also have 'valence holes' and 'conduction holes'? - Physics

Short Note

We have valence electrons and conduction electrons in a semiconductor. Do we also have 'valence holes' and 'conduction holes'?

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Solution

Holes do not exist in reality. They exist only virtually. When an electron jumps from the valence band to the conduction band, a vacancy is created at the place from where the electron had jumped. This vacancy is called a hole. So, a valence or conduction hole is a virtual concept only.

Concept: Energy Bands in Conductors, Semiconductors and Insulators
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 23 Semiconductors and Semiconductor Devices
Short Answers | Q 7 | Page 417
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