Hole transfer
• Hole transfer involves the movement of holes.
• Holes may be thought of positive charged particles and as such they move through an electric field in a direction opposite to that of electrons.
• In a good conductor (metal) as shown in fig (a) the current flow is due to free electrons only.
• In a semiconductor as shown in fig (b). The current flow is due to both holes and electrons moving in opposite directions.
• The unit of electric current is Ampere (A) and since the flow of electric current is constituted by the movement of electrons in conduction band and holes in valence band, electrons and holes are referred as charge carriers.
• Hole transfer involves the movement of holes.
• Holes may be thought of positive charged particles and as such they move through an electric field in a direction opposite to that of electrons.
• In a good conductor (metal) as shown in fig (a) the current flow is due to free electrons only.
• In a semiconductor as shown in fig (b). The current flow is due to both holes and electrons moving in opposite directions.
• The unit of electric current is Ampere (A) and since the flow of electric current is constituted by the movement of electrons in conduction band and holes in valence band, electrons and holes are referred as charge carriers.
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