NEET UG PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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A p-n photodiode is made of a material with a band gap of 1.0 eV. The maximum wavelength of radiation that can be absorbed by the material is nearly

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Correct option: D

1.2 \times {10^{ - 6}}m

Option D (

1.2 \times {10^{ - 6}}m

) is correct because it is the maximum wavelength that corresponds to the given band gap energy of 1.0 eV.

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I = A{T^2}{e^{q/{V_L}}}

{V_L}

\sqrt{n}.

n

p - n\;

{10^{17}}\mathrm{c}{\mathrm{m}^{ - 3}}

P

{10^{16}}

\mathrm{c}{\mathrm{m}^{ - 3}}

N

kT =

{n_i} = 1.4 \times {10^{10}}

\mathrm{c}{\mathrm{m}^{ - 3}}