Light emission due to dislocations in wurtzite ZnO bulk single crystals freshly introduced by plastic deformation

Y. Ohno, H. Koizumi, T. Taishi, I. Yonenaga, K. Fujii, H. Goto, T. Yao

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15 Citations (Scopus)

Abstract

An arbitrary number of dislocations were freshly introduced in wurtzite ZnO bulk single crystals by plastic deformation at high temperatures (923-1123 K), and the optical properties were examined by photoluminescence spectroscopy. ZnO, including a high density (more than 109 cm-2) of dislocations, showed excitonic light emission with photon energies of 3.100 and 3.345 eV, as well as their LO-phonon replicas, at a temperature of 11 K, and the intensities increased with increasing dislocation density.

Original languageEnglish
Article number011922
JournalApplied Physics Letters
Volume92
Issue number1
DOIs
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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