Investigations of p-type signal for ZnO thin films grown on (100) GaAs substrates by pulsed laser deposition

D. J. Rogers, F. Hosseini Teherani, T. Monteiro, M. Soares, A. Neves, M. Carmo, S. Pereira, M. R. Correia, A. Lusson, E. Alves, N. P. Barradas, J. K. Morrod, K. A. Prior, P. Kung, A. Yasan, M. Razeghi

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In this work we investigated ZnO films grown on semi-insulating (100) GaAs substrates by pulsed laser deposition. Samples were studied using techniques including X-ray diffraction (XRD), scanning electron microscopy, atomic force microscopy, Raman spectroscopy, temperature dependent photoluminescence, C-V profiling and temperature dependent Hall measurements. The Hall measurements showed a clear p-type response with a relatively high mobility (~260 cm 2/Vs) and a carrier concentration of ~1.8 × 1019 cm-3. C-V profiling confirmed a p-type response. XRD and Raman spectroscopy indicated the presence of (0002) oriented wurtzite ZnO plus secondary phase(s) including (101) oriented Zn2As2O 7. The results suggest that significant atomic mixing was occurring at the film/substrate interface for films grown at substrate temperatures of 450°C (without post-annealing). © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.

Original languageEnglish
Pages (from-to)1038-1041
Number of pages4
JournalPhysica Status Solidi C - Current Topics in Solid State Physics
Volume3
Issue number4
DOIs
Publication statusPublished - 2006
Event12th International Conference on II-VI Compounds - Warsaw, Poland
Duration: 12 Sep 200516 Sep 2005

Fingerprint Dive into the research topics of 'Investigations of p-type signal for ZnO thin films grown on (100) GaAs substrates by pulsed laser deposition'. Together they form a unique fingerprint.

Cite this