Combining with the above calculation of L gives a diffusion length of ∼10 μm, which is ∼3 cell lengths.
Nothing was known about: (1) spin-flipping within F-metals, characterized by a spin-diffusion length, lFsf; (2) interface specific resistances (AR=area A times resistance R) for N1/N2 interfaces; (3) interface specific resistances and interface spin-dependent scattering asymmetry at F/N and F1/F2 interfaces; and (4) spin-flipping at F/N, F1/F2 and N1/N2 interfaces.
One model has demonstrated that drug efflux from cells, enhanced by PgP, will result in a longer diffusion length [ 39].
In organic photovoltaics (OPVs), active layer thicknesses are limited by exciton diffusion length.
As illustrated in the bottom panel of Figure 5a, the fiber acted as a hole collector to extract the photo-excited holes generated within the rectangle region (marked with a dashed line) defined by the minority diffusion length (Lp) (approximately 20 μm for n-Si at 2 × 1015 cm-3 doping level) of the silicon and the fiber length.
The probing depth (penetration depth) of the photothermal signal is determined by the thermal diffusion length µ s, that is, the thermal wave amplitude decreases by a factor of e−1 within a distance of one thermal diffusion length from the surface.
This effect might be attributed to a higher diffusion length of Ga atoms induced by the changed growth conditions, so that the reduced Ga flow is overcompensated.
A higher diffusion length on the sidewalls results in an increase of the length growth rate.
Therefore, in our experimental procedure, the outer rings are the first to be formed, caused by the larger diffusion length of gallium atoms at 380°C.
When producing CQD PVs with halide-treated CQDs (Fig. 2e f), both the air stability can be improved and the efficiency can be increased by improving carrier diffusion length due to reduction of surface defects (Fig. 4a) [21].
