Chemical reactions at Cu/ZnS(001) and In/ZnS(001) heterojunctions: A comparison of photoelectron and S L2,3 x-ray emission spectroscopy
Creators
- 1. Institut fuer Physikalische und Theoretische Chemie, Universitaet Tuebingen, Auf der Morgenstelle 8, 72076 Tuebingen (Germany)
- 2. Wilhelm-Ostwald-Institut fuer Physikalische und Theoretische Chemie, Universitaet Leipzig, Linnestrasse 2, 04103 Leipzig (Germany)
Description
Occurrence and extent of chemical reactions at Cu/ZnS(001) and In/ZnS(001) heterojunctions have been investigated by S L2,3 x-ray emission spectroscopy as well as photoelectron spectroscopy. With the formation of metal-sulfur bonds, spectral features originating from shallow metal d core levels (Zn 3d, In 4d) or valence states (Cu 3d)) may appear in the S L2,3 emission spectra. Thus the x-ray emission spectroscopy was employed to detect chemical reactions at the heterojunctions, together with conventional photoelectron spectroscopy. Considerable reactions at the Cu/ZnS(001) interface are more clearly indicated in the S L emission spectrum than in the Cu 2p3sol2 or S 2p core level spectra, whereas relatively confined reactions at the In/ZnS(001) interface can only be probed in the In 3d5sol2 core level spectra. The partial densities of states calculated for a reference CuInS2 on the basis of density functional theory agree well with features occurring in its S L2,3 emission spectrum
Additional details
Identifiers
- DOI
- 10.1063/1.1843287;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 86
- Journal Issue
- 1
- Journal Page Range
- p. 012108-012108.3
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36080140
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- CHEMICAL BONDS; CHEMICAL REACTIONS; COMPARATIVE EVALUATIONS; COPPER; DENSITY FUNCTIONAL METHOD; EMISSION SPECTRA; EMISSION SPECTROSCOPY; HETEROJUNCTIONS; INDIUM; SEMICONDUCTOR MATERIALS; SULFUR; X-RAY EMISSION ANALYSIS; X-RAY PHOTOELECTRON SPECTROSCOPY; X-RAY SPECTROSCOPY; ZINC SULFIDES
- Descriptors DEC
- CALCULATION METHODS; CHALCOGENIDES; CHEMICAL ANALYSIS; ELECTRON SPECTROSCOPY; ELEMENTS; EVALUATION; INORGANIC PHOSPHORS; MATERIALS; METALS; NONDESTRUCTIVE ANALYSIS; NONMETALS; PHOSPHORS; PHOTOELECTRON SPECTROSCOPY; SEMICONDUCTOR JUNCTIONS; SPECTRA; SPECTROSCOPY; SULFIDES; SULFUR COMPOUNDS; TRANSITION ELEMENTS; VARIATIONAL METHODS; ZINC COMPOUNDS
Optional Information
- Notes
- (c) 2005 American Institute of Physics