IEEE Photonics Journal (Jan 2015)

The Effect of Tensile Strain on Optical Anisotropy and Exciton of <inline-formula> <tex-math notation="TeX">$m$</tex-math></inline-formula>-Plane ZnO

  • H. H. Wang,
  • J. S. Tian,
  • C. Y. Chen,
  • H. H. Huang,
  • Y. C. Yeh,
  • P. Y. Deng,
  • L. Chang,
  • Y. H. Chu,
  • Y. R. Wu,
  • J. H. He

DOI
https://doi.org/10.1109/JPHOT.2015.2415672
Journal volume & issue
Vol. 7, no. 2
pp. 1 – 8

Abstract

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The near band edge emission of the tensile-strained m-plane ZnO film grown on (112)LaAlO3 substrates shows abnormal low polarization degree (ρ = 0.1). The temperature dependency of polarization degree clarifies the origins of different emission peaks. In tensile-strained m-plane ZnO, the [0001] polarized state is upper shifted and is overlapping with the [112̅0] polarized state. This phenomenon causes the abnormal low polarization degree and reveals the effect of strain on the emission anisotropy of m-plane ZnO.