Search any question & find its solution
Question:
Answered & Verified by Expert
In a p-type semiconductor, the acceptor level is situated \( 57 \mathrm{meV} \) above the valence band. The maximum wavelength of light required to produce a hole will be
Options:
Solution:
1570 Upvotes
Verified Answer
The correct answer is:
\( 217100 Å \)
Given that the level of energy of the acceptor band is above the valence band by,
The energy of the photon having just enough energy to overcome the gap is given by,
Speed of light
Planck's constant ,Substituting values,
The maximum wavelength of light required to produce a hole is .
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.