• About
  • Policies
  • What is openaccess
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Engineering
      • Department of Electrical and Electronics Engineering
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Engineering
      • Department of Electrical and Electronics Engineering
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Polar vs. nonpolar InGaN/GaN quantum heterostructures: Opposite quantum confined electroabsorption and carrier dynamics behavior

      Thumbnail
      View / Download
      176.2 Kb
      Author
      Sarı, Emre
      Nizamoğlu, Sedat
      Choi J.H.
      Lee, S.J.
      Baik, K.H.
      Lee I.H.
      Baek J.H.
      Hwang, S.-M.
      Demir, Hilmi Volkan
      Date
      2010
      Source Title
      2010 Photonics Global Conference
      Publisher
      IEEE
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
      163
      views
      98
      downloads
      Abstract
      We present a study of quantum confined electroabsorption and carrier dynamics in polar c-plane and nonpolar a-plane InGaN/GaN quantum heterostructures. We demonstrate red-shifting absorption edge, due to quantum confined Stark effect, in nonpolar InGaN/GaN quantum structures in response to increased electric field, while we show the opposite effect with blue-shifting absorption spectra in polar quantum structures. Moreover, confirmed by time-resolved photoluminescence measurements, we prove that carrier lifetimes increase with increasing electric field for nonpolar structures, whereas the opposite occurs for polar ones.
      Keywords
      A-plane
      Absorption edges
      Carrier dynamics
      Electro-absorption
      InGaN/GaN
      Non-polar
      Nonpolar structures
      Quantum confined stark effect
      Quantum heterostructures
      Quantum structure
      Time-resolved photoluminescence
      Absorption
      Crystals
      Electric fields
      Semiconductor quantum wells
      Spectroscopy
      Photonics
      Permalink
      http://hdl.handle.net/11693/28451
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/PGC.2010.5705998
      Collections
      • Department of Electrical and Electronics Engineering 3524
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
      Show full item record

      Related items

      Showing items related by title, author, creator and subject.

      • Thumbnail

        Bounding the Set of Finite Dimensional Quantum Correlations 

        Navascués, M.; Vértesi, T. (American Physical Society, 2015)
        We describe a simple method to derive high performance semidefinite programing relaxations for optimizations over complex and real operator algebras in finite dimensional Hilbert spaces. The method is very flexible, easy ...
      • Thumbnail

        Electroluminescence efficiency enhancement in quantum dot light-emitting diodes by embedding a silver nanoisland layer 

        Yang, X.; Hernandez-Martinez, P. L.; Dang C.; Mutlugün, E.; Zhang, K.; Demir, Hilmi Volkan; Sun X. W. (Wiley-VCH Verlag, 2015)
        A colloidal quantum dot light-emitting diode (QLED) is reported with substantially enhanced electroluminescence by embedding a thin layer of Ag nanoislands into hole transport layer. The maximum external quantum efficiency ...
      • Thumbnail

        Near-UV InGaN/GaN-based dual-operation quantum optoelectronic devices 

        Özel, Tuncay; Sarı, Emra; Nizamoğlu, Sedat; Demir, Hilmi Volkan (SPIE, 2007)
        We present a novel dual-operation InGaN/GaN based quantum optoelectronic device (QOD) that operates as a quantum electroabsorption modulator in reverse bias and as a light emitter in forward bias in the spectral range of ...

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartments

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 1771
      Copyright © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy