Photocarrier
Mostrando 1-2 de 2 artigos, teses e dissertações.
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1. Bare LO-phonon peak in THz-emission signals: a dielectric-function analysis
We present a normal-mode analysis of coupled photocarrier-phonon dynamics in Te. We consider a dielectric function which accounts for LO phonons and the electron-hole gas within the Debye- Hüuckel model and RPA. Our main finding is the existence of a bare LO phonon mode in the system even at high carrier density. This oscillation is an unscreened L - (q) mo
Brazilian Journal of Physics. Publicado em: 2002-06
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2. Steady-state photocarrier grating techique / Técnica de grade de fotoportadores em estado estacionário
In this work we present a new and simple technique to measure transport and kinetic properties in photoconductive insulator semiconductors. Important properties as diffusion length and mobility-lifetime product of hydrogenated amorphous silicon (a-SI:h) was determined. This technique is based on the effect of a steady-state photocarrier grating concentration
Publicado em: 1994