| Literature DB >> 22401235 |
Hao Zheng1, Jörg Kröger, Richard Berndt.
Abstract
Donors near the polar (0001) surface of nominally undoped ZnO were investigated with scanning tunneling microscopy at 5 K. Spatially resolved spectroscopy reveals single and double charging. Equidistant peaks in spectra of ionized donors are attributed to polaron excitation. The data are consistent with doping due to Zn interstitials or complexes.Entities:
Year: 2012 PMID： 22401235 DOI： 10.1103/PhysRevLett.108.076801
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161