[单选题]
The energy gap betweenuqj+ hne p90g 9mon5w8:gx )jd the valence and conduction bands in a certain semicon t+lb fh22qo 0vv4s* ywm1xdf:ductor is 1.25 eV. What is the threshold wavelength fox oh bfltv40yf+221:m*qdws vr optical absorption in this substance?
A. $599 \; nm$
B. $959 \; nm$
C. $873 \; nm$
D. $995 \; nm$
Post time 2024-1-14 18:37:39