Question

The responsivity of an InGaAs photodiode for
the quantum efficiency of 70% (energy gap of
InGaAs is equal to 0.75 eV.) is
Option 1:
0.633 A/W
Option 2:
0.733 A/W
Option 3:
0.833 A/W
Option 4:
0.933 A/W​

Answer 1

Answer:

The correct answer is Option 4: 0.933A/W.

Step by step Explanation:

Given that the energy gap of InGaAs is 0.75 eV; quantum efficiency = 70%.

According to Einstein's equation for energy Eg = hc/l;

l = 6.6 x 10-34 (J-s) x 3x 108 (m/s) / 0.75 (ev) x 1.6 x 10-19

l = 1664X 10-9 m

So, the reponsivity in correspondence to efficiency will be defined by

Ʀ = (h/1248) l

Ʀ = (0.70/1248) 1664 x 10-9

Ʀ =0.933 A/W

Answer 2

Answer:

The correct option is 4: 0.933A/W

Explanation:

Given :

the energy gap of InGaAs is 0.75 eV; quantum efficiency = 70%.

• According to Einstein's equation for energy
• Eg=hc/l;
• 1 = 6.6  x 10-34 (J-s) x 3x 108 (m/s) / 0.75 (ev) x1.6 x 10-19
• |= 1664X 10-9 m
• So, the reponsivity in correspondence to efficiency will be defined byR = (h/1248) |
• R = (0.70/1248) 1664 x 10-9

R =0.933 A/W

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