Question

Calculate conductivity σ as function of temperature σ(T) for a n-type semiconductor when it is exposed to light with 1 mW intensity, 750 nm wavelength , and T = 50K

Given Semiconductor Characteristics:

Eg=0.35 eV, Nd=1E16 cm-3; Ec-Ed=0.025, Nc=Nv=8E18

σ(T)= q(m(T) n(T))

Where:

µ(T)=µ_oT^-0.6 with µ_o=20,000 and n=n_i+n_d

Answer 1

The expression for condocivity 2 KT Eq-9 Enead gap ot semiconductor Ea = 0.35-ev - 2 03o 26