The resistivity of intrinsic silicon at room temperature is 2.3 x 103 Ωm, while n-type extrinsic silicon has a resistivity of 8.33 x 10-2 Ωm. A bar of extrinsic silicon measuring 50 x 1000 mm carries a steady current of 100 μA, resulting in a voltage of 50 mV across it. When applying Ohm's Law, the voltage across an equivalent bar of intrinsic silicon can be calculated, although deviations from Ohm's Law may occur in high electric fields, known as the "hot electron" regime. For practical applications, Ohm's Law remains applicable in most scenarios.
PREREQUISITESElectrical engineers, materials scientists, and students studying semiconductor physics will benefit from this discussion, particularly those focused on the behavior of silicon in electronic applications.
mfb said:I think you forgot to fill out part 2 and 3 of the homework template. In other words: What do you know about conduction? What did you do so far? Where did you run into problems?