Films minces à base de Si nanostructuré pour des cellules ...

(a) n 2 = 1.6 and k 2 = 0, 0.01 and 0.1. (b) Envelope of pump maxima and minima: An
illustration.
Figure 5.6: Pump prole versus imaginary part of thin lm refractive index (k 2 ).
tel-00916300, version 1 - 10 Dec 2013
(d) Interplay between emitter distribution and pump prole for monolayer
and multilayer congurations
In addition to the pump prole variation with various factors described above, the
conguration of thin lm (i.e. monolayers or multilayers) would also have a large
inuence on the distribution of excited emitters. In the case of a monolayer, we
consider a uniform distribution of emitters (Fig. 5.7). As can be seen from the
gure, in a SRSO monolayer with uniformly distributed Si-np, the emitters that are
at the maxima of the pump are easily excited, whereas those are minima may be
less excited. Consequently, the emission intensities also would vary depending on
the location of emitters along the pump prole.
Figure 5.7: An illustration of the pump prole variation in a thin lm of thickness d(nm)
with distribution of emitters in monolayer conguration.
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