Electronic and Optical Properties of Staggered ZnO/ZnO1−xSx-ZnO1−ySy/ZnO Quantum Wells for Bluish-Green Light-Emitting Diodes

The optical and electronic properties of staggered ZnO/ZnO 1− x S x -ZnO 1− y S y /ZnO (for x > y ) bluish-green light-emitting diodes with quantum well (QW) structures are investigated using the multiband effective mass theory. The obtained results are compared with those of conventional ZnO 1−...

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Bibliographic Details
Published in:Journal of the Korean Physical Society 2019, 75(11), , pp.899-902
Main Authors: Magotra, V. K., Jeon, H. C., Kumar, S., Kang, T. W., Lee, S. J., Park, S. H., Myoung, N.
Format: Article
Language:English
Subjects:
Light emitting diodes
Mathematical and Computational Physics
Optical properties
Organic light emitting diodes
Particle and Nuclear Physics
Photovoltaic cells
Physics
Physics and Astronomy
Quantum wells
Spontaneous emission
Theoretical
Zinc oxide
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Summary:The optical and electronic properties of staggered ZnO/ZnO 1− x S x -ZnO 1− y S y /ZnO (for x > y ) bluish-green light-emitting diodes with quantum well (QW) structures are investigated using the multiband effective mass theory. The obtained results are compared with those of conventional ZnO 1− x S x /ZnO QW structures, and the staggered QW structures are found to have a comparatively larger optical matrix, showing a substantial, yet gradual, reduction in the internal field effect. Thus, the staggered ZnO/ZnO 1− x S x -ZnO 1− y S y /ZnO QW structure design leads to a significantly higher spontaneous emission compared to that of conventional ZnO 1− x S x /ZnO QW structures. This analysis indicates the potential of using a staggered QW structure for high-efficiency ZnO-based bluish-green LEDs.
ISSN:0374-4884
1976-8524
DOI:10.3938/jkps.75.899