Question

In a p-type semiconductor the acceptor level is situated 57 meV above the valence band. The maximum wavelength of light required to produce a hole will be: 

Options

• 57 Å

• 57 × 10^-3 Å

• 217100 Å

• 11.61 × 10^-33 m

Answer 1

217100 Å

Explanation:

λ = `"hc"/"eE"`

= `(6.62xx10^-34xx3xx10^8xx10^10)/(1.6xx10^-19xx57xx10^-3)`Å

= 217100 Å