Investigation into the Anomalous Temperature Characteristics of InGaN Double Quantum Well Blue Laser Diodes Using Numerical Simulation

Nanoscale Research Letters
Han-Youl Ryu

Abstract

GaN-based blue laser diodes (LDs) may exhibit anomalous temperature characteristics such as a very high characteristic temperature (T 0) or even negative T 0. In this work, temperature-dependent characteristics of GaN-based blue LDs with InGaN double quantum well (QW) structures were investigated using numerical simulations. The temperature-dependent threshold current is found to become increasingly anomalous as the thickness or doping concentration of the barrier layer between QWs increases. For a properly chosen barrier thickness and doping concentration, very high T 0 of >10,000 K can be obtained. The anomalous temperature characteristics of these InGaN blue LDs are attributed to the increase of gain at the n-side QW with increasing temperature because of the thermally enhanced hole transport from the p-side to the n-side QW.

References

Jul 21, 2015·Optics Express·Changmin LeeSteven P DenBaars
Mar 15, 2016·Applied Optics·Anthony F GeorgeFaiz Rahman

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Citations

Apr 29, 2018·Nanoscale Research Letters·Tianbao LiHaiwei Jiang

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Methods Mentioned

BETA
chip

Software Mentioned

LASer Technology Integrated Program ( LASTIP )
LASTIP

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