Title :
Cathodoluminescence characterisation of vapour transport grown ZnO structures
Author :
Foley, Matthew ; Ton-That, Cuong ; Phillips, Matthew R.
Author_Institution :
Dept. of Phys. & Adv. Mater., Univ. of Technol. Sydney, Sydney, NSW, Australia
Abstract :
ZnO structures grown under controlled vapour-phase transport growth conditions were characterised by electron microscopy and high-resolution cathodoluminescence techniques. Variations in the defect related emission and morphology were observed to be dependent on the distance from the source material. Annealing of grown structures under oxygen eliminated the defect emission. These experimental observations suggest that oxygen deficiency in ZnO is linked to the defect related emission, and that defect emission is strongly influenced by the oxygen gas content during vapour transport growth.
Keywords :
II-VI semiconductors; annealing; cathodoluminescence; crystal growth from vapour; electron microscopy; semiconductor growth; wide band gap semiconductors; zinc compounds; ZnO; annealing; cathodoluminescence characterisation; controlled vapour-phase transport growth conditions; defect emission; electron microscopy technique; high-resolution cathodoluminescence technique; oxygen deficiency; oxygen gas content; source material; vapour transport grown ZnO structures; Annealing; Morphology; Nanowires; Substrates; Zinc oxide; Cathodoluminescence; Defects; Vapour-phase growth; ZnO;
Conference_Titel :
Nanoscience and Nanotechnology (ICONN), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-5261-3
Electronic_ISBN :
978-1-4244-5262-0
DOI :
10.1109/ICONN.2010.6045254
