Energy relaxation rates in AlInN/AlN/GaN heterostructures
Journal of Electronic Materials
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/21348
The two-dimensional (2D) electron energy relaxation in Al 0.83In 0.17N/AlN/GaN heterostructures has been investigated experimentally. Shubnikov-de Haas (SdH) effect measurements were employed in the investigations. The electron temperature (T e) of hot electrons was obtained from the lattice temperature (T L) and the applied electric field dependencies of the amplitude of SdH oscillations. The experimental results for the electron temperature dependence of power loss are also compared with current theoretical models for power loss in 2D semiconductors. The power loss from the electrons was found to be proportional to (T e 3 - T L 3) for electron temperatures in the range 1.8 K < T e < 14 K, indicating that the energy relaxation of electrons is due to acoustic phonon emission via unscreened piezoelectric interaction. The effective mass and quantum lifetime of the 2D electrons have been determined from the temperature and magnetic field dependencies of the amplitude of SdH oscillations, respectively. The values obtained for quantum lifetime suggest that remote ionized impurity scattering is the dominant scattering mechanism in Al 0.83In 0.17N/AlN/ GaN heterostructures. © 2012 TMS.
- Research Paper 
Showing items related by title, author, creator and subject.
Development of school energy policy and energy education plans: A comparative case study in three wisconsin school communities Lane J.F.; Floress, K.; Rickert, M. (2014)Through a qualitative comparative case study, this investigation examined the process by which three school districts in Wisconsin, U.S.A., developed a school energy policy and complementary energy education plan. To guide ...
Cost and emission impacts of virtual power plant formation in plug-in hybrid electric vehicle penetrated networks Arslan O.; Karasan O.E. (2013)With increasing interest in alternative energy resources and technologies, mass penetration of PHEVs (plug-in hybrid vehicles) into the electricity grid and widespread utilization of DERs (distributed energy resources) are ...
Observation of selective plasmon-exciton coupling in nonradiative energy transfer: Donor-selective versus acceptor-selective plexcitons Ozel, T.; Hernandez-Martinez P.L.; Mutlugun, E.; Akin O.; Nizamoglu, S.; Ozel I.O.; Zhang Q.; Xiong Q.; Demir, H. V. (2013)We report selectively plasmon-mediated nonradiative energy transfer between quantum dot (QD) emitters interacting with each other via Förster-type resonance energy transfer (FRET) under controlled plasmon coupling either ...