A theoretical simulation is used to estimate the
impact of oscillator strength on Silicon nanocrystals
(SiNCs) using Matlab program. The Photoluminescence
intensity oscillator dependence as well as Oscillator
strength as a function of energy band gap and photon
energy is studied. The results obtained, shows that
oscillator strength of SiNCs behavior is in compliance with
the quantum confinement effects which in succession
determine the optical properties of SiNCs, and also shows
that the oscillator strength in Nano-Crystallites varies with
the amount of confinement and also with the surrounding
environment due to change in dielectric constant. The
models used in this work can be applied to other
nanocrystals semiconductor materials
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