3 ms·
So in the case of a narrow band gap, where does the excess energy go? I'd guess it must be shed as a lower energy photon?
by benjamincburns 12y ago
So in the case of a narrow band gap, where does the excess energy go? I'd guess it must be shed as a lower energy photon?
- reportingsjr 12y agoNope! In very rare cases it can generate multiple electron hole pairs the photon if it has enough energy to do that. Almost all of the time however it will generate a phonon (aka heat) rather than a photon with the extra energy. A phonon is a wave in matter rather than electromagnetism (photon).