chapter 1 problem solutions大二课件模电ch01s.pdfVIP

Chapter1

ProblemSolutions

1.1

nBT3/2e−Eg/2kT

i

(a)Silicon

(i)n5.23=×10152503/2exp⎡⎢−1.1⎤⎥

i()()−6

⎢286×10250⎥

⎣()()⎦

2.067=×1019exp[−25.58]

8−3

n1.61=×10cm

i

(ii)n5.23=×10153503/2exp⎡⎢−1.1⎤⎥

i()()−6

⎢286×10350⎥

⎣()()⎦

3.425=×1019exp[−18.27]

n3.97=×1011cm−3

i

(b)GaAs

⎡⎤

(i)n2.10=×10142503/2exp⎢−1.4⎥

i()()−6

⎢286×10250⎥

⎣()()⎦

(8.301=×1017)exp[−32.56]

3−3

n6.02=×10cm

i

⎡⎤

(ii)n2.10=×10143503/2exp⎢−1.4⎥

i()()−6

⎢286×10350⎥

⎣(