(Zn,Cd)O thin films for the application in heterostructures: Structural and optical properties

M. Lange*, C. P. Dietrich, K. Brachwitz, T. Boentgen, M. Lorenz, M. Grundmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We report on (Zn,Cd)O thin films, grown by pulsed laser deposition on a-plane sapphire substrates with high Cd-contents up to 0.25. By incorporating Cd in ZnO and by applying a low growth temperature of about 300 degrees C, the (Zn,Cd)O related luminescence redshifts to an energy of 2.46 eV as a result of the large Cd-content of 0.25. The redshift of the bandgap energy was additionally proven by transmission measurements. By fitting the transmission curves, the spectra of the absorption coefficient and the index of refraction are calculated. The (Zn,Cd)O thin films are single phase and exhibit the wurtzite crystal structure. An increasing a-and c-lattice constant is observed with increasing Cd-content. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4766905]

Original languageEnglish
Article number103517
Number of pages6
JournalJournal of Applied Physics
Volume112
Issue number10
DOIs
Publication statusPublished - 15 Nov 2012

Keywords

  • MOLECULAR-BEAM EPITAXY
  • PULSED-LASER DEPOSITION
  • ALLOY-FILMS
  • MGXZN1-XO
  • ZNCDO/ZNO
  • SAPPHIRE
  • ZNO
  • SUBSTRATE
  • GROWTH
  • MOCVD

Fingerprint

Dive into the research topics of '(Zn,Cd)O thin films for the application in heterostructures: Structural and optical properties'. Together they form a unique fingerprint.

Cite this