The Energy Gap Between the Valence and Conduction Bands in a Certain

The energy gap between the valence and conduction bands in a certain semiconductor is $1.25 \mathrm { eV }$ . What is the threshold wavelength for optical absorption in this substance? $\left( c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = \right.$ $6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s }$ )

A) $994 \mathrm {~nm}$
B) $873 \mathrm {~nm}$
C) $599 \mathrm {~nm}$
D) $959 \mathrm {~nm}$

Correct Answer:

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Access For Free