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arXiv · 1010.1215

Temperature stability of intersubband transitions in AlN/GaN quantum wells

Kristian Berland·Martin Stattin·Rashid Farivar·D. M. S. Sultan·Per Hyldgaard·Anders Larsson·Shu Min Wang·Thorvald G. Andersson
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Abstract

Temperature dependence of intersubband transitions in AlN/GaN multiple quantum wells grown with molecular beam epitaxy is investigated both by absorption studies at different temperatures and modeling of conduction-band electrons. For the absorption study, the sample is heated in increments up to $400^\circ$C. The self-consistent Schrödinger-Poisson modeling includes temperature effects of the band-gap and the influence of thermal expansion on the piezoelectric field. We find that the intersubband absorption energy decreases only by $\sim 6$ meV at $400^\circ$C relative to its room temperature value.

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Kristian Berland, Martin Stattin, Rashid Farivar, D. M. S. Sultan, Per Hyldgaard, Anders Larsson, Shu Min Wang, Thorvald G. Andersson. 2010-10-06. Temperature stability of intersubband transitions in AlN/GaN quantum wells. https://doi.org/10.1063/1.3456528

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