Part A If an LED emits light of wavelength 1 = 660 nm , what is...

Question

Question

Part A If an LED emits light of wavelength 1 = 660 nm , what is the energy gap (in eV) between valence and conduction bands?

Answer 1

Answer #1

Given data,

λ = 660 nm

E = hc / λ

= 6.626 x 10^-34 * 3 x 10⁸ / 660 x 10^-9

= 3.01 x 10^-19

= 3.01 x 10^-19 / 1.6 x 10^-19

= 1.88 eV

Answer 2

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