Electronic and Optical Properties of Staggered ZnO/ZnO1-xSx-ZnO1-ySy/ZnO Quantum Wells for Bluish-Green Light-Emitting Diodes
- Authors
- Magotra, V. K.; Jeon, H. C.; Kumar, S.; Kang, T. W.; Lee, S. J.; Park, S. H.; Myoung, N.
- Issue Date
- Dec-2019
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- ZnO; Staggered quantum well structure; Spontaneous emission; Bluish-green LEDs
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.75, no.11, pp 899 - 902
- Pages
- 4
- Indexed
- SCI
SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 75
- Number
- 11
- Start Page
- 899
- End Page
- 902
- URI
- https://scholarworks.dongguk.edu/handle/sw.dongguk/7386
- DOI
- 10.3938/jkps.75.899
- ISSN
- 0374-4884
1976-8524
- Abstract
- The optical and electronic properties of staggered ZnO/ZnO1-xSx-ZnO1-ySy/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 ZnO1-xSx/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/ZnO1-xSx-ZnO1-ySy/ZnO QW structure design leads to a significantly higher spontaneous emission compared to that of conventional ZnO1-xSx/ZnO QW structures. This analysis indicates the potential of using a staggered QW structure for high-efficiency ZnO-based bluish-green LEDs.
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