Dresden 2011 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 12: Postersitzung I
MM 12.36: Poster
Montag, 14. März 2011, 17:30–19:00, P5
Theoretical and experimental structure analysis of the (1 0 -1 -1) ZnO twin boundary — •Viktor Hrkac1, Viola Duppel2, Yogendra Kumar Mishra3, Rainer Adelung3, and Lorenz Kienle1 — 1Synthesis and Real Structure, Institute for Materials Science, CAU Kiel, Kaiserstr. 2, 24143 Kiel — 2Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart — 3Functional Nanomaterials, Institute for Materials Science, CAU Kiel, Kaiserstr. 2, 24143 Kiel
The II-VI semiconductor zinc oxide (ZnO) has been the subject of intensive research due to its wide spectrum of properties which results in a plethora of applications including optoelectronic and piezoelectric technologies. In particular, the morphology and thereby the physical properties of ZnO are significantly affected through defect structures induced by twinning. Thus, a comprehensive understanding of twin interfaces is a pivotal for a future optimization of controlling and device performance. Based on analytical electron microscopic observations, a three dimensional model of the (1 0 -1 -1) twin boundary interface is derived which allows a convincing simulation of experimental micrographs. In addition, dynamic effects at the twin interface can be studied in simulated diffraction patterns via the model. The authors would like to thank the DFG for funding via the SFB 855.