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#8 For the following electron mobility graph:

10x10

Electron mobility (cm/vs)

80x10²

6.0x10²

4.0x10²

2.0x10

100K

150K

200K

250K

300K

350K

400K

450K

500K

Temperature increase

10" 10" 10¹4 10" 10" 10" 10" 10" 10"

Dopant concentration (cm)

A. What is the approximate mobility, at 150K doped with 1.6X10¹5 donors?

(5 Points)

B. At an electron concentration of 10¹3, what is the total change in mobility

from 100K to 500K? (5 Points)

5

in

Fig: 1