Abstract
In this paper, a structure design using quaternary AlInGaN as multiple-symmetrical-stair-shaped quantum barriers without an electron blocking layer is shown. The results show this design mitigates the droop effect to ${\sim}{0.1}\% $, and the internal quantum efficiency reaches about 93.4%. It is believed that the better performance results from balanced electron and hole concentration and distribution of the current among the quantum wells, along with reduced non-radiative recombination. This work may be useful in the application of using quaternary AlInGaN materials as quantum barrier layers with computational simulations to design structures with electron-barrier-free layers.
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Data availability
Data underlying the results presented in this paper are available in Refs. [30–34].
30. F. Liao, K. Zhang, N. Zeng, M. Lian, J. Li, X. Zhang, Y. A. Yin, and W. Qi-bao, “The effects of polarization-modulated quaternary AlInGaN barriers in deep-UV-LED,” J. Electron. Mater. 51, 126–132 (2022). [CrossRef]
34. K. Li, N. Zeng, F. Liao, and Y. A. Yin, “Investigations on deep ultraviolet light-emitting diodes with quaternary AlInGaN streamlined quantum barriers for reducing polarization effect,” Superlattices Microstruct. 145, 106601 (2020). [CrossRef]
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