|May3-13, 01:54 AM||#18|
Optoelectronics: Why Semiconductors?
We think of a metal as a plasma, because our model is that of an electron gas with ionized atoms. For (certain) doped semiconductors, we think of plasmons as we do in metals. In metals, the significance of the plasmon frequency (ωp) is that for ωp>ωphoton, the metal is reflective, and for ωp<ωphoton, the metal is transparent. Semiconductors have a lower ωp than metals, and are therefore less reflective (metals have a higher tendency to re-emit photons).
Am I getting warm?
|conductors, optoelectronics, semiconductors|
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