[en] Morphology and optical properties of GaN nanowhiskers grown by molecular beam epitaxy(MBE) have been studied in correlation with growth parameters. It was shown that the growth parameters can be tuned such that uniform, well separated and high-quality nanowhiskers are obtained. Using an optimized ramp of Ga beam equivalent pressure (BEP) during the growth, the tapering or coalescence of nanowhiskers can be suppressed. By increasing the growth temperature the density of nanowhiskers is reduced, but the crystalline quality is improved as can be concluded from cathodoluminescence (CL) results.
Disciplines :
Electrical & electronics engineering
Identifiers :
UNILU:UL-ARTICLE-2009-326
Author, co-author :
Meijers, R.; Institute of Thin Films and Interfaces (ISG1) and cni-Center of Nanoelectronic Systems for Information Technology, Research Centre Julich
Richter, T.; Institute of Thin Films and Interfaces (ISG1) and cni - Center of Nanoelectronic Systems for Information Technology, Research Centre Jülich, 52425 Jülich, Germany
Calarco, R.; Institute of Thin Films and Interfaces (ISG1) and cni - Center of Nanoelectronic Systems for Information Technology, Research Centre Jülich, 52425 Jülich, Germany
Stoica, T.; Institute of Thin Films and Interfaces (ISG1) and cni - Center of Nanoelectronic Systems for Information Technology, Research Centre Jülich, 52425 Jülich, Germany
Bochem, H.-P.; Institute of Thin Films and Interfaces (ISG1) and cni - Center of Nanoelectronic Systems for Information Technology, Research Centre Jülich, 52425 Jülich, Germany
MARSO, Michel ; Institute of Thin Films and Interfaces (ISG1) and cni - Center of Nanoelectronic Systems for Information Technology, Research Centre Jülich, 52425 Jülich, Germany
Lüth, H.; Institute of Thin Films and Interfaces (ISG1) and cni - Center of Nanoelectronic Systems for Information Technology, Research Centre Jülich, 52425 Jülich, Germany
Language :
English
Title :
GaN-nanowhiskers: MBE-growth conditions and optical properties
