| About this Abstract |
| Meeting |
Materials Science & Technology 2011
|
| Symposium
|
Recent Advances in Structural Characterization of Materials
|
| Presentation Title |
Crystal Structure and Surface Analysis of Diamond-Like Semiconductor Single Crystals |
| Author(s) |
Kimberly A. Rosmus, Jacilynn A. Brant, Jacqueline L. Sturgeon, Kristin L. Bunker, Karen E. Harris, Jennifer A. Aitken |
| On-Site Speaker (Planned) |
Jennifer A. Aitken |
| Abstract Scope |
Highly-quality single crystals of several I<SUB>2</SUB>-II-IV-VI<SUB>4</SUB> quaternary diamond-like semiconductors, for example Cu<SUB>2</SUB>ZnSiS<SUB>4</SUB>, have been prepared by slow cooling of high-temperature solid-state reactions or alkali chalcogenide flux synthesis. Crystals as small as 0.01 mm on an edge were carefully mounted for X-ray photoelectron spectroscopy (XPS). The surface of the as-grown single crystals were sputter-cleaned using an Ar<SUP>+</SUP> ion beam. Survey spectra were used to verify the stoichiometry of the crystals. Binding energies calculated from high-resolution spectra were analyzed to verify the oxidation states of the ions. Data collected before and after sputtering were compared to understand the surface oxidation of the materials. Single crystal X-ray diffraction shows that the semiconductors crystallize the in orthorhombic space group Pmn2<SUB>1</SUB> or the monoclinic space group Pn and can be viewed as superstructures or structural derivatives of the hexagonal diamond structure. |
| Proceedings Inclusion? |
Definite: A CD-only volume |