Investigation of blue InGaN light-emitting diodes with step-like quantum well

Miao Chan Tsai; Sheng Horng Yen; Yen Kuang Kuo

doi:10.1007/s00339-011-6458-1

Investigation of blue InGaN light-emitting diodes with step-like quantum well

Miao Chan Tsai, Sheng Horng Yen, Yen Kuang Kuo

Department of Physics

Research output: Contribution to journal › Article

14 Citations (Scopus)

Abstract

The concept of a step-like quantum well is proposed with the purpose to reduce the influence of electrostatic field resulting from the piezoelectric effect on the optical performance of blue InGaN light-emitting diodes. Particularly, the optical properties of the LED structures with the In _0.23Ga_0.77N single quantum well, In_0.20Ga _0.80N/In_0.26Ga_0.74N step-like quantum well, and In_0.26Ga_0.74N/In_0.20Ga_0.80N step-like quantum well are numerically investigated in detail. Simulation results show that the In_0.20Ga_0.80N/In _0.26Ga_0.74N step-like-quantum-well LED structure has the best optical performance in virtue of the improvement in spatial overlap of electrons and holes in the quantum well.

Original language	English
Pages (from-to)	621-626
Number of pages	6
Journal	Applied Physics A: Materials Science and Processing
Volume	104
Issue number	2
DOIs	https://doi.org/10.1007/s00339-011-6458-1
Publication status	Published - 2011 Aug 1

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All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)

Cite this

Tsai, M. C., Yen, S. H., & Kuo, Y. K. (2011). Investigation of blue InGaN light-emitting diodes with step-like quantum well. Applied Physics A: Materials Science and Processing, 104(2), 621-626. https://doi.org/10.1007/s00339-011-6458-1

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10.1007/s00339-011-6458-1