Structural and electronic properties of the Zn0.5Cd0.5Se(100) surface

D. Y.W. Yu, Antoine Kahn, A. Cavus, M. C. Tamargo

Research output: Contribution to journalArticle

Abstract

The chemical composition, atomic structure and electron affinity of Zn0.5Cd0.5Se(100) grown by molecular beam epitaxy and prepared by Se-decapping are investigated. The Se-terminated surface exhibits a (2 × 1) reconstruction which corresponds to a complete monolayer of Se dimers. The cation-terminated surface exhibits a (1 × 1) structure tentatively attributed to a vacancy structure similar to that of the c(2 × 2) Zn-terminated ZnSe surface, but randomized by the non-periodic distribution of Zn and Cd. The evolution of the electron affinity of the surface is consistent with the formation of a surface dipole induced by a cation-to-anion charge transfer which fills (empties) all anion (cation) dangling bonds. Finally, preferential desorption of Cd is observed for temperatures in excess of 370°C.

Original languageEnglish (US)
Pages (from-to)350-356
Number of pages7
JournalSurface Science
Volume373
Issue number2-3
DOIs
StatePublished - Mar 1 1997

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Keywords

  • Surface reconstruction
  • Ultra-violet photoemission spectroscopy
  • Work function measurements
  • Zinc-cadmium selenide

Fingerprint Dive into the research topics of 'Structural and electronic properties of the Zn<sub>0.5</sub>Cd<sub>0.5</sub>Se(100) surface'. Together they form a unique fingerprint.

  • Cite this