ELECTRONIC PROPERTIES AND EFFECTIVE MASS CALCULATIONS OF SILICON-GERMANIUM (SIGE) ALLOYS

Student: Stephen Olamide Oyewole
Supervisor: Dr O Akinojo
HOD: Prof Rachel I Obed
Department of Physics
SCIENCE
University of Ibadan, Ibadan, Oyo State

Abstract

Abstract This study investigates the electronic properties and effective mass calculations of silicon-germanium (SixGe1−x) alloys using computational methods based on Density Functional Theory (DFT). By modeling the impact of varying germanium compositions on band structure, carrier mobility, and electronic transport properties, the research aims to provide insights into optimizing SiGe alloys for semiconductor applications. The results indicate that increasing germanium content leads to a decrease in the effective mass of holes and electrons, thereby improving carrier mobility. These findings hold significant implications for high-speed electronic and optoelectronic devices, where material tunability is essential for performance enhancement. The study also highlights the need for experimental validation and further exploration of strain effects to refine predictive models.

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