Studies on Thermoluminescence Peak Intensities of Germanium Quantum Dots
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Date
2020-08-18
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Addis Ababa University
Abstract
In this project work I studied the TL properties of germanium Quantum dots in the
one trap one recombination model for fist order kinetics. I simulated the TL glow
curve for different parameters like the activation energy, the frequency factor, the
heating rate and the initial concentration of the electrons in the conduction bands.
The result shows that as the activation energy E is increased, the TL glow curve shifts
towards higher temperatures, but the curve maintains its overall shape. Moreover,
the initial concentration of filled traps has no effects on both the maximum height of
the TL glow curve and the temperature of maximum TL intensity Tmax, but leaves the
overall shape unchanged in the case of the Garlick-Gibson model and May-Partridge
model. I also showed that as the frequency factor s is increased, the TL glow curve
shifts towards lower temperatures, but the curve maintains its overall shape for the
three models. At the same time the effect of initial concentration of filled traps studied
and showed that the initial concentration has no effects on the maximum height of
the TL glow curve, and leaves the shape of TL glow curve unchanged.
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Keywords
Studies, Thermoluminescence, Peak Intensities, Germanium, Quantum Dots