Ankara : The Department of Materials Science and Nanotechnology, Bilkent University, 2012.Thesis (Master's) -- Bilkent University, 2012.Includes bibliographical references leaves 80-89.Semiconductor nanocrystals are nanometer scale fluorescent crystallites with
tunable optical properties, which can be controlled by the material composition and
particle size. They can be prepared using various synthesis techniques and find
applications in many different areas ranging from life sciences to electronics. In this
thesis, indium phosphide based nanocrystals are studied for LED applications. The
thesis research work focuses on the colloidal synthesis method and material
characterization of these nanocrystals. Using one pot synthesis method, the indium
phosphide/zinc sulfide (InP/ZnS) core/shell nanocrystal structures are synthesized.
This synthesis technique allows for a reproducible and tunable preparation method.
The material characterization techniques used in this thesis include UV-Vis
spectroscopy, photoluminescence spectroscopy, transmission electron microscopy
(TEM), X-ray diffraction, X-ray photoelectron spectroscopy (XPS), inductively coupled
plasma-mass spectrometry (ICP-MS), and Zeta Sizer (or DLS). These properties make
InP/ZnS nanocrystals comparable to their cadmium (Cd) containing counterparts
with respect to their optical properties, and InP/ZnS nanocrystals offer the potential
to replace them because of environmental concerns in LED applications.Coşkun, YaseminM.S
