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      Electric field dependent radiative decay kinetics of polar InGaN/GaN quantum heterostructures at low fields

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      Author
      Sari, E.
      Nizamoglu, S.
      Lee, I. H.
      Baek, J. H.
      Demir, Hilmi Volkan
      Date
      2009-05-29
      Source Title
      Applied Physics Letters
      Print ISSN
      0003-6951
      Publisher
      American Institute of Physics
      Volume
      94
      Issue
      21
      Pages
      211107-1 - 211107-3
      Language
      English
      Type
      Article
      Item Usage Stats
      140
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      111
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      Abstract
      Electric field dependent photoluminescence decay kinetics and its radiative component are studied in polar InGaN/GaN quantum heterostructures at low fields. Under externally applied electric field lower than polarization fields, spectrally and time resolved photoluminescence measurements are taken to retrieve internal quantum efficiencies and carrier lifetimes as a function of the applied field. Subsequently, relative behavior of radiative recombination lifetimes is obtained in response to the applied field. In these characterizations of polar InGaN/GaN structures, we observe that both the carrier lifetime and the radiative recombination lifetime decrease with increasing external electric field, with the radiative component exhibiting weaker field dependence.
      Keywords
      Applied electric field
      Applied field
      External electric field
      Field dependence
      InGaN/GaN
      Internal quantum efficiency
      Low field
      Photoluminescence decay
      Polarization field
      Quantum heterostructures
      Radiative decay
      Radiative recombination
      Time-resolved photoluminescence
      Carrier lifetime
      Crystals
      Electric field measurement
      Photoluminescence
      Electric fields
      Permalink
      http://hdl.handle.net/11693/22724
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.3142386
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
      • Nanotechnology Research Center (NANOTAM) 1006
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