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

as the thickness of the lm, the pattern thickness, electronic density and incident
light prole inuences the emission intensity. Therefore, the fourth major objective
of this work is to analyse the emission behaviour of the thin lms, contributed by
factors other than Si-QDs using simulations.
Sketch of this thesis
tel-00916300, version 1 - 10 Dec 2013
This thesis work is separated into ve chapters.
Chapter 1 details the global energy needs, the various solar cell concepts - their
advantages and limitations, and the Si-based strategies. This Chapter outlines the
current research status on Si nanostructures for photovoltaics and highlights the
important results that serve as a platform for further research.
Chapter 2 elaborates the principle, details of the equipments used and the working
of various experimental techniques employed in our laboratory for the growth
and characterization of the thin lms.
Chapter 3 focusses on understanding the temperature dependent sputtering
mechanism and optimizing the deposition parameters of Si-rich Silicon Oxide (SRSO)
materials. The structural and optical properties of SRSO monolayers and SRSO/SiO 2
multilayers are investigated. The role of SiO 2 sublayer as a diusion barrier in multilayers
is analysed.
Chapter 4 focusses on optimizing the deposition parameters of silicon nitride
materials that are nitrogen rich, stochiometric or silicon rich. Monolayers of silicon
nitride and SRSO/SRSN multilayers are analyzed for structural and optical
properties. Special emphasis is laid on understanding the emission behaviour of the
material.
Chapter 5 deals with understanding the inuence of optical and geometrical
eects on the experimentally obtained photoluminescence using theoretical models.
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