Abstract
Significant polarity-related effects were observed in the near-surface atomic composition and valence band electronic structure of ZnO single crystals, investigated by x-ray photoemission spectroscopy using both Al K-alpha (1486.6 eV) and synchrotron radiation (150 to 1486 eV). In particular, photoemission from the lowest binding energy valence band states was found to be significantly more intense on the Zn-polar face compared to the O-polar face. This is a consistent effect that can be used as a simple, nondestructive indicator of crystallographic polarity in ZnO and other wurtzite semiconductors. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3562308]
Published in:
Applied Physics Letters 98,10 (2011)
Link to original published article:
http://dx.doi.org/10.1063/1.3562308
Date of Version
March 2011
Recommended Citation
Allen, M. W.; Zemlyanov, D. Y.; Waterhouse, G. I. N.; Metson, J. B.; Veal, T. D.; McConville, C. F.; and Durbin, S. M., "Polarity effects in the x-ray photoemission of ZnO and other wurtzite semiconductors" (2011). Department of Physics and Astronomy Faculty Publications. Paper 1165.
https://docs.lib.purdue.edu/physics_articles/1165