Question 158: Semiconductors and Logic Gates

Question

What is the conductivity of a semiconductor sale having electron concentration of  $$5 	imes {10^{18}}\,\,{m^{ - 3}},$$ hole concentration of $$5 	imes {10^{19}}\,\,{m^{ - 3}},$$ electron mobility of 2.0 m2 V$$-$$1 s-1 and hole mobility of 0.01 m2  V$$-$$1 s$$-$$1 ? 
(Take charge of electronas 1.6 $$ 	imes $$ 10 $$-$$19 c)

Accepted Answer

Conductivity of semiconductor,
$$\sigma $$ = e$$\left( {{\eta _e}{\mu _e} + \eta '{\mu _h}} ight)$$
= 1.6 $$ 	imes $$ 10
$$-$$19
(5 $$ 	imes $$ 10
18
$$ 	imes $$ 2 + 5 $$ 	imes $$ 10
19
$$ 	imes $$ 0.01)
= 1.6 $$ 	imes $$ 1.05
= 1.68

Answer

1.68 ($$\Omega $$-m)$$-$$1

Answer

1.83 ($$\Omega $$-m)$$-$$1

Answer

0.59 ($$\Omega $$-m)$$-$$1

Answer

1.20 ($$\Omega $$-m)$$-$$1

Semiconductors and Logic Gates

What is the conductivity of a semiconductor sale having electron concentration of $5 \times {10^{18}}\,\,{m^{ - 3}}, hole concentration of 5 \times {10^{19}}\,\,{m^{ - 3}}, electron mobility of 2.0 m2 V-1 s-1 and hole mobility of 0.01 m2 V-1 s-1 ? (Take charge of electronas 1.6 \times 10 -$19 c)

Choose the correct answer: