Synthesis of α–SiO₂ nanowires using Au nanoparticle catalysts on a silicon substrate

Abstract

Large-scale SiO2 nanowires were synthesized by using a simple but an effective approach at low temperature. Scanning electron microscopy, transmission electron microscopy, and x-ray photoelectron spectroscopy were employed to characterize the samples. The results indicated that SiO2 nanowires with a uniform diameter of about 20 nm and a length up to 10 μm have been synthesized. Photoluminescence measurement showed that the SiO2 nanowires emitted blue light at 2.8 and 3.0 eV. The possible growth process of the SiO2 nanowires is discussed. Using this method, large panels of SiO2 nanowires can be made under conditions that are suitable for device fabrication.

Synthesis of Amorphous SiOx Nanowires and Nanofibers by Thermal Evaporation with Gold as Catalyst

“…That's because the flowing Ar may cause the substrate surface temperature to changed or fluctuated. This tiny temperature fluctuation have great effect in the growth of nanowires because when the temperature suddenly goes down the growing object can solidify with wider diameter before it complete the other step, which can be seen in Figure 5 stage (1). Here, the droplet diameter should reach critical amount to establish the growth processes [9].…”

“…One-dimensional SiO x nanostructures have recently attracted considerable research attention due to their unique properties and promising applications [1][2][3][4][5][6][7]. The stable and bright blue emission of SiO x nanowires makes them potential sources of highintensity light, near-field optical microscope probes and waveguides.…”

“…The stable and bright blue emission of SiO x nanowires makes them potential sources of highintensity light, near-field optical microscope probes and waveguides. Many studies prefer to use gold [1][2][3] as a catalyst for SiOx growth. The Vapor-LiquidSolid (VLS) growth mechanism was pointed out as based mechanism when the growth species comes as a vapor form [4].…”

Uncovering Cortical Modularity by Nanotechnology

“…The issues faced by CNTs could be overcome by nanowires because of the reproducible control over size and electronic properties that current growth methods enable (Cui et al 2001b(Cui et al , 2003Cui and Lieber 2001;Wu et al 2004). A good class of NWs has been developed, ranging from NWs based on classic semiconductors, such as silicon NWs (Chen et al 2006;Goncher et al 2006;Yajie et al 2008), GaP (Dujavova-Laurencikova et al 2013), GaN (Lee et al 2007), CdS and ZnS (Barrelet et al 2003), heterostructures as Ge-Si (Xiang et al 2006a, b), InAs-InP (Jiang et al 2007), oxide nanowires MgO (Yin et al 2002), Cu 2 O (Jiang et al 2002), SiO 2 (Yu et al 1998;Liu et al 2001;Zheng et al 2002), Ga 2 O 3 Sharma and Sunkara 2002), Al 2 O 3 (Valcarcel et al 1998;Xiao et al 2002) (Zhou et al 2002), and others.…”

SiOxNanowires Produced on Molybdenum-Coated Si Substrates

“…Not only amorphous silica (SiO x ) is widely used in silicon based integrated devices and can also be produced as nanowires, but also SiO x emits intense and stable blue light at room temperature [1,2]. Accordingly, many researchers have put their enthusiasm in preparing the SiO x nanowires by various methods: while a technique such as heating the bare-Si wafers up to 1300…”