skip to main content

SciTech ConnectSciTech Connect

Title: Interaction between O{sub 2} and ZnO films probed by time-dependent second-harmonic generation

The interaction between O{sub 2} and ZnO thin films prepared by atomic layer deposition has been investigated by time-dependent second-harmonic generation, by probing the electric field induced by adsorbed oxygen molecules on the surface. The second-harmonic generated signal decays upon laser exposure due to two-photon assisted desorption of O{sub 2}. Blocking and unblocking the laser beam for different time intervals reveals the adsorption rate of O{sub 2} onto ZnO. The results demonstrate that electric field induced second-harmonic generation provides a versatile non-contact probe of the adsorption kinetics of molecules on ZnO thin films.
Authors:
 [1] ;  [2] ; ; ; ;  [1] ;  [3]
  1. Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands)
  2. (Denmark)
  3. Department of Physics and Nanotechnology, Aalborg University, Skjernvej 4A, DK-9220 Aalborg Øst (Denmark)
Publication Date:
OSTI Identifier:
22283270
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ADSORPTION; DESORPTION; ELECTRIC FIELDS; HARMONIC GENERATION; LASER RADIATION; MOLECULES; OXYGEN; PHOTONS; PROBES; SURFACES; THIN FILMS; TIME DEPENDENCE; ZINC OXIDES