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Optical properties of undoped and oxygen doped CuCl films on silicon substrates

  • Dominik Danieluk
  • Ann L. Bradley
  • Anirban Mitra
  • Lisa O’Reilly
  • Olibanji F. Lucas
  • Aidan Cowley
  • Patrick J. McNally
  • Barry Foy
  • Enda McGlynn
Article

Abstract

Semiconductor photonic emitters operating in the UV range remain an elusive goal. Attention has focused mainly on III-Nitrides. However, a large lattice constant difference between the III-Nitride layers and the compatible substrates results in high densities of misfit dislocations and consequently the device performance is adversely affected. An alternative novel material system, γ-CuCl on silicon, is investigated. Properties of the exciton luminescence from vacuum deposited undoped and oxygen doped CuCl films on Si are studied using temperature dependent photoluminescence spectroscopy. Oxygen doping degrades the optical quality and introduces an intermediate state leading to negative thermal quenching behaviour.

Keywords

CuCl Free Exciton Exciton Peak Thermal Activation Energy Epitaxial Lateral Overgrowth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This research is supported by Science Foundation Ireland Grant No. RFP/ENE027.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Dominik Danieluk
    • 1
  • Ann L. Bradley
    • 1
  • Anirban Mitra
    • 1
  • Lisa O’Reilly
    • 2
  • Olibanji F. Lucas
    • 2
  • Aidan Cowley
    • 2
  • Patrick J. McNally
    • 2
  • Barry Foy
    • 3
  • Enda McGlynn
    • 3
  1. 1.Semiconductor Photonics, Physics DepartmentTrinity CollegeDublin 2Ireland
  2. 2.Nanomaterials Processing Laboratory, Research Institute for Networks and Communications Engineering (RINCE), School of Electronic EngineeringDublin City UniversityDublin 9Ireland
  3. 3.School of Physical Sciences/National Centre for Plasma Science and TechnologyDublin City UniversityDublin 9Ireland

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