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Nature of red luminescence band in research-grade ZnO single crystals: A "self-activated" configurational transition

Publication ,  Journal Article
Chen, YN; Xu, SJ; Zheng, CC; Ning, JQ; Ling, FCC; Anwand, W; Brauer, G; Skorupa, W
Published in: Applied Physics Letters
July 28, 2014

By implanting Zn+ ions into research-grade intentionally undoped ZnO single crystal for facilitating Zn interstitials (Zni) and O vacancies (VO) which is revealed by precise X-Ray diffraction rocking curves, we observe an apparent broad red luminescence band with a nearly perfect Gaussian lineshape. This red luminescence band has the zero phonon line at ∼ 2.4 eV and shows distinctive lattice temperature dependence which is well interpreted with the configurational coordinate model. It also shows a low "kick out" thermal energy and small thermal quenching energy. A " self-activated" optical transition between a shallow donor and the defect center of Zni-VO complex or VZnVO di-vacancies is proposed to be responsible for the red luminescence band. Accompanied with the optical transition, large lattice relaxation simultaneously occurs around the center, as indicated by the generation of multiphonons. © 2014 AIP Publishing LLC.

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Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

July 28, 2014

Volume

105

Issue

4

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences
 

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Chen, Y. N., Xu, S. J., Zheng, C. C., Ning, J. Q., Ling, F. C. C., Anwand, W., … Skorupa, W. (2014). Nature of red luminescence band in research-grade ZnO single crystals: A "self-activated" configurational transition. Applied Physics Letters, 105(4). https://doi.org/10.1063/1.4892356
Chen, Y. N., S. J. Xu, C. C. Zheng, J. Q. Ning, F. C. C. Ling, W. Anwand, G. Brauer, and W. Skorupa. “Nature of red luminescence band in research-grade ZnO single crystals: A "self-activated" configurational transition.” Applied Physics Letters 105, no. 4 (July 28, 2014). https://doi.org/10.1063/1.4892356.
Chen YN, Xu SJ, Zheng CC, Ning JQ, Ling FCC, Anwand W, et al. Nature of red luminescence band in research-grade ZnO single crystals: A "self-activated" configurational transition. Applied Physics Letters. 2014 Jul 28;105(4).
Chen, Y. N., et al. “Nature of red luminescence band in research-grade ZnO single crystals: A "self-activated" configurational transition.” Applied Physics Letters, vol. 105, no. 4, July 2014. Scopus, doi:10.1063/1.4892356.
Chen YN, Xu SJ, Zheng CC, Ning JQ, Ling FCC, Anwand W, Brauer G, Skorupa W. Nature of red luminescence band in research-grade ZnO single crystals: A "self-activated" configurational transition. Applied Physics Letters. 2014 Jul 28;105(4).

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

July 28, 2014

Volume

105

Issue

4

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences