Sentence examples for mobile electron densities from inspiring English sources

Open image in new window Figure 11 Trapped electron and mobile electron densities.

(a) Trapped electron density and (b) mobile electron density.

(a) Mobile electron density and (b) trapped electron density.

(b) Mobile electron density under 1-kV dc voltage.

(a) Mobile electron density under 50-kV dc voltage.

In fact, the trapped electron density is almost equal to 4 C m−3 and the mobile electron density is nearly equal to 2 C m−3.

This aspect inverts for thicknesses less than 450 μm where the mobile electron density (Figure 8a) becomes much more important than that of the trapped electrons (Figure 8b), and the ratio between mobile and trapped densities near to the electrodes is greater than 10.

Variation of mobile electron density: ∂ ρ eμ x, t ∂ t = − s 1 ρ eμ x, t ρ ht x, t ⏟ Disappearance by recombination with trapped holes − B e ρ eμ x, t 1 − ρ et x, t ρ Te x, t ⏟ Disappearance by trapping Open image in new window (17).

At 600 μm, it is clear to see that the trapped electron density is much higher than the mobile electron density; for example, at 700 s, the ratio between the trapped density (Figure 7a) and the mobile density (Figure 7b) near the electrodes is greater than 4. Hence, the conclusion is that the charge dynamic for thicknesses greater than 450 μm is governed by trapped charges.

Indeed, under this low voltage, the mobile electron and hole densities are not important and cannot reach the opposite electrodes, so the recombination rate density is more significant in the middle of the sample.

Open image in new window Figure 3 Mobile and trapped electron densities in a thickness of 150 × 10 −6 m under 10 kV.