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Recombination Dynamics of InGaN/GaN Multiple Quantum Wells WithDifferent Well Thickness
Published online by Cambridge University Press: 17 February 2016
Abstract
Recombination dynamics of InGaN/GaN multiple quantum wells (MQWs) with differentwell thickness have been studied. From the behaviour of temperature dependentphotoluminescence, we find that the activation energy decreases with the wellthickness increasing. In addition, with temperature changing from 10K to roomtemperature, the “W” shape of full width of half maximumis also thickness related, and it becomes more obvious with the well thicknessincreasing. These results indicate that the dominant recombination dynamicschange from exciton localization to quantum confined stark effect with wellthickness increasing. From our measurement, the InGaN/GaN MQWs with 3nmthickness seems a turning point, which shows the best optimized optical andstructural properties.
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- Copyright © Materials Research Society 2016
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