Title :
Synthesis and optical properties of mullite (Al5.65Si0.35O9.175) nanowires
Author :
Chen, Yong Jun ; Chi, Bo ; Liu, Qiu Xiang ; Mahon, Denise C. ; Chen, Ying
Author_Institution :
Dept. of Electron. Mater. Eng., Australian Nat. Univ., Canberra, ACT
Abstract :
Large quantities of mullite nanowires were synthesized on mica substrates. The nanowires were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and photoluminescence (PL) spectroscopy. The results indicate that the nanowire composition is Al5.65Si 0.35O9.175, which fits the general mullite formula of Al4+2xSi2-2xO10-x. The nanowires have a diameter range of 50-100 did and lengths of several micrometers. Aligned nanowires can also been observed at the substrate edge. Raman microscopy indicated a change in the substrate surface occurred following the formation of nanowires. The nanowires have strong photoluminescence (PL) emission bands at 310, 397, 452 and 468 nm and the oxygen-related defect in the nanowires were supposed to be responsible for these emissions
Keywords :
aluminium compounds; nanowires; photoluminescence; growth mechanism; mullite nanowires; photoluminescence property; synthesis and characterisation; Electron optics; Nanowires; Optical diffraction; Photoluminescence; Raman scattering; Scanning electron microscopy; Spectroscopy; Transmission electron microscopy; X-ray diffraction; X-ray scattering;
Conference_Titel :
Nanoscience and Nanotechnology, 2006. ICONN '06. International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
1-4244-0453-3
Electronic_ISBN :
1-4244-0453-3
DOI :
10.1109/ICONN.2006.340569
