Temperature stability of intersubband transitions in AlN/GaN quantum wells
Journal article, 2010

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 degrees C. The self-consistent Schroumldinger-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 similar to 6 meV at 400 degrees C relative to its room temperature value.

Poisson equation

piezoelectricity

thermal expansion

Schrodinger equation

photoluminescence

semiconductor quantum wells

gallium compounds

molecular beam epitaxial growth

semiconductor heterojunctions

conduction bands

heat treatment

SCF calculations

III-V semiconductors

aluminium compounds

Author

Kristian Berland

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Martin Stattin

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Rashid Farivar

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

D. M. S. Sultan

Chalmers, Microtechnology and Nanoscience (MC2)

Per Hyldgaard

Chalmers, Applied Physics, Electronics Material and Systems Laboratory

Anders Larsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Shu Min Wang

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Thorvald Andersson

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 97 4 043507- 043507

Areas of Advance

Information and Communication Technology

Materials Science

Subject Categories

Materials Engineering

Other Materials Engineering

Condensed Matter Physics

Driving Forces

Innovation and entrepreneurship

DOI

10.1063/1.3456528

More information

Created

10/6/2017