The electron from the lower left hand covalent bond
(site 2) goes to the earlier hole site1, leaving a hole at its site indicating an
apparent movement of the hole from site 1 to site 2 (a)
(b)
Rationalised 2023-24
329
Semiconductor Electronics:
Materials, Devices and
Simple Circuits
 EXAMPLE 14 1
An intrinsic semiconductor
will behave like an insulator at
T = 0 K as shown in Fig 14